Dissertations / Theses: 'Behavioural nutrition'

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Pearson, Natalie. "Behavioural nutrition and physical activity in young people : the role of the family." Thesis, Loughborough University, 2009. https://dspace.lboro.ac.uk/2134/12859.

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The increasing evidence of associations between inactivity and poor diets in young people and both immediate and long term health implications is of public health concern. There is a need to further understanding of young people's health behaviours, to facilitate the development of behaviour change strategies promoting healthy behaviours. This thesis, provides seven studies focusing on the family environment and the influences that the family and parents have on young people's physical activity and dietary behaviours. Chapter 2.1 describes a systematic review of family correlates of fruit and vegetable consumption in children and adolescents. Chapter 2.2 describes a systematic review of family correlates of breakfast consumption among children and adolescents. Systematic reviews are an essential component of evidence-based practice, and both reviews were conducted to examine the state of the current literature examining family environmental influences on aspects of young people's dietary behaviours. In the context of this thesis, these systematic reviews are of primary importance as they were instrumental in shaping and informing the direction of the research described in later chapters. Chapter 3 broadens the investigation of young people's health behaviours and describes two cross-sectional studies examining both physical activity and dietary behaviours. Chapter 3.1 describes a study examining patterns of adolescent physical activity and dietary behaviours. This study describes how adolescents are at risk of not meeting the recommendations for multiple health behaviours (e.g. physical activity, fruit and vegetable consumption, and breakfast consumption). Chapter 3.2 was designed to fill several gaps in the literature about the correlates of multiple health behaviours and also to gain a greater insight into the transferability of parental behaviours to different health behaviours in children. Chapter 3.2 describes a study examining family influences on young peoples fruit and vegetable consumption and physical activity, and on combinations of these behaviours (e.g. high physical activity and low fruit and vegetable consumption). Chapter 4.1 was designed to fill gaps in the literature by examining the association between family circumstance (parental marital status, maternal education, maternal employment status, number of brothers and number of sisters) and adolescent dietary behaviour, and 2-year change in dietary behaviour. Chapter 4.2 was designed to fill gaps in the literature by examining the relationship between parenting styles, family structure and aspects of adolescent dietary behaviour. Together, the six studies described above established a rationale and informed the content of the pilot family-based intervention described in Chapter 5. This thesis found that particular aspects of the family environment and particular attributes of parenting were associated with positive physical activity and dietary behaviours of young people. Such findings add considerably to the existing literature and are important as they suggest that even as young people age, the family environment and the emotional context within which parent-child interactions occur are vital for positive health behaviours. Targeting such facets of the family and parenting holds great potential for behaviour change strategies.

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Nolan, Coleen C. (Coleen Casey). "Demographic, behavioural and dietary predictors of total fat intake in Montreal adults." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56659.

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Lifestyle and dietary predictors of total fat intake (%kcal) were examined, to identify groups potentially at risk of hypercholesterolemia. In 1987, 301 Montreal adults were sampled by random digit dialing. A diet history and lifestyle habits were recorded. Mean total fat intake (%kcal) was 34.75% ($ pm$6.23). Principal Components Analysis identified specific dietary patterns. Regression analyses indicated that the first 4 food factors were associated with total fat intake (%kcal p $<$ 0.01). Household size was inversely related to total fat (%kcal); 0.8% less kcal from fat for each additional member of the household (p $<$ 0.01). Females had 2.8% more kcal from fat than males (p $<$ 0.01). The number of fast food meals consumed per week was positively associated with outcome when age was considered (p $<$ 0.05). BMI and education level were not associated with total fat (%kcal). Smoking was associated with intake of higher fat foods (p $<$ 0.01). These predictors can identify groups in the population who may be at increased cardiovascular risk.

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Watson, Helen M. "The development and evaluation of a home based behavioural nutrition education programme for adults with cystic fibrosis." Thesis, University of Surrey, 2006. http://epubs.surrey.ac.uk/844160/.

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Malnutrition remains a major clinical problem in Cystic Fibrosis (CF). As the degree of underweight correlates closely with reduced survival, interventions are needed which optimise nutritional outcomes. The focus of this thesis was on developing a home based behavioural nutrition education programme for adults with CF and assessing its effectiveness on nutritional status, knowledge and other psychosocial measures using a randomised control study design. Chapter 2 describes the development of the "Eat well with CF" programme, which used a framework of Social Cognitive Theory. The next investigations aimed to test the programme both with consumers and with peers. The results showed that adults with CF would be motivated to take part and felt they would learn from the programme. The peer review demonstrated that the programme was rated highly with regard to content, accuracy and information. In Chapter 3 the effectiveness of "Eat well with CF" was tested in a randomised trial (n=74) using a control group who received standard care. The results demonstrated a trend towards an increase in weight. After 6 months the average weight gain in the intervention group was 0.57 kg compared to control weight gain of 0.09 kg (p=0.545, 95%CI -1.07-2.0). Subjects undertaking the "Eat well with CF" programme had significantly increased their self-efficacy to cope with their diet, (p=0.003, 1.19-5.67), their specific nutritional knowledge (p < 0.001, 4.05-7.38) and their reported dietary fat intake (p=0.014, 0.76-6.50) compared to the control group. At 12 months, the average weight gain was 0.02 kg in the control group and 1.14kg in the intervention group with no statistical differences between the two groups. The intervention group continued to show a marked and significant improvement in CF specific nutritional knowledge and self-efficacy score. Chapter 4 examines the reasons for subject non- participation in the study, which led to the development of an audio version of "Eat well with CF". The positive results of the process evaluation detailed in chapter 5 highlight the significant personal enjoyment and benefit received by the participants. These studies combine to demonstrate the utility, acceptability and efficacy of "Eat Well with CF". In addition they challenge traditional dietetic practice. We suggest this novel behavioural education approach could enhance current dietetic practice, to improve outcomes and lead to life long maintenance of optimal nutritional status for adults with CF.

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Stephens, Teya Anne-Margaret. "Participation in school food and nutrition programs and associations with dietary psychosocial and behavioural outcomes among Vancouver students in grades 6-8." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/47090.

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Background: Diet-related health conditions, including obesity and type 2 diabetes, are a growing concern among Canadian youth. In Canada, there is also a rising interest in the impact of dietary choices on environmental sustainability. Several school food and nutrition programs (SFNPs) have been implemented to improve dietary quality and environmental sustainability, including gardening and food preparation programs. However, limited research has examined the links between participation in SFNPs and dietary psychosocial and behavioural outcomes. Purpose: To examine healthy and environmentally sustainable dietary attitudes, expectations, choices, and practices, and current participation rates in SFNPs among Vancouver students in grades 6-8, and to evaluate whether participation in SFNPs is associated with these outcomes. Methods: A cross-sectional study was conducted in 26 schools in Vancouver from March-June, 2012 (n=937 students). Schools were selected using non-probability sampling. A web-based survey, including a food frequency questionnaire, measured student demographic characteristics, participation in SFNPs, and dietary psychosocial and behavioural outcomes. Rao-Scott corrected chi-square tests were applied to assess associations between SFNPs and outcomes (p<0.05). Results: Less than 50% of students reported participating in SFNP activities, with the exception of recycling (51.2%). Greater than 50% reported the importance of health and environmental sustainability when making food purchases, and agreement that food choices impact health or the environment. However, < 50% of students reported daily intake of most healthy and weekly intake of most environmentally sustainable dietary choices. Approximately 1/3 of students reported weekly purchasing from convenience food establishments. Participation in activities specific to learning about food or nutrition was greater among females, and secondary school students reported greater participation in food-specific activities. Activities specific to learning about food or nutrition demonstrated expected associations with outcomes. Most associations between hands-on food-related activities were in the unanticipated direction. Conclusions: Findings demonstrate marginal participation in SFNPs and intake of healthy and environmentally sustainable dietary choices among Vancouver students. Results also reveal the possible role of activities specific to learning about food or nutrition in promoting healthy and environmentally sustainable diet-related outcomes. Further research on SFNPs to inform curriculum changes could improve student dietary behavioural outcomes, student health, and environmental sustainability.

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Demydas, Tetyana [Verfasser]. "Dietary quality, behavioural factors and cardiovascular health : an econometric analysis of structural relationships with the data of the National Health and Nutrition Examination Survey 2005-2006, USA / Tetyana Demydas." Gießen : Universitätsbibliothek, 2015. http://d-nb.info/1070168351/34.

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Parmenter, Kathryn Emma. "Nutrition knowledge and dietary behaviour." Thesis, University College London (University of London), 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265695.

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There is now unequivocal evidence that dietary behaviour is related to illness and risk of chronic diseases such as cardiovascular disease and cancer. Attempts to improve the nation's diet are based on providing information, assuming that given more information, the public will choose healthier diets. Many studies indicate, however, that nutrition knowledge has little association with dietary behaviour; but a review of the literature reveals that nutrition knowledge has been inadequately measured. In addition, dietary behaviour has been assessed in terms of food intake and not in relation to changes in, or readiness to change, food intake. Following the Introduction, this research begins, in Chapter 2, by reviewing the literature measuring nutrition knowledge. It is found that while many studies measure knowledge, typically the measure forms only part of the study which assesses either a particular subpopulation or a particular aspect of nutrition. In consequence, questionnaires are designed for a one-off and specific purpose and little attention is paid to the psychometric properties of the instrument. Dietary behaviour is measured with one of the well-established methods of assessing intake, the problems of which are acknowledged in the literature. Chapter 3 describes these methods with their shortcomings and use in psychological research. In response to these reviews, a comprehensive nutrition knowledge questionnaire was developed (in 1994) and intake was conceptualised in terms of dietary change, in keeping with psychologists' role in nutrition. Following the development and pilot study of this questionnaire (Chapter 4), its validity and reliability were assessed further in Chapter 5, with positive results. Significant differences were found between criterion groups (dietetic and computer science students), providing evidence of construct validity. Internal consistency correlations ranged from 0.50 to 0.92 and test-retest reliability correlations ranged from 0.80 to 0.98. This measure was then used (Chapter 6) to assess the level of nutrition knowledge among a large representative sample of British adults in a postal survey (in 1995). Nutrition knowledge was found to be poor concerning the dietary recommendations for meat, starchy foods, fruit and vegetables; the different types of fat (saturated, poly- and monounsaturated); and associations between diet and diseases, such as fruit and vegetables, heart disease and cancer. Both stages of change (using Prochaska and DiClemente's model) and consumption of fat, fruit and vegetables (to test the stages' validity) were also assessed as measures of dietary behaviour. Most respondents replied that they had been limiting their fat intake for more than 6 months, but not been thinking of increasing their fruit and vegetable intake. Multivariate analyses showed that being female, having more educational qualifications and being in a higher socioeconomic class were predictive of knowing more about nutrition and having a healthier dietary behaviour. Relationships between nutrition knowledge, stages of change and dietary intake were examined in Chapter 7 and significant associations identified. In contrast to this cross-sectional research, the final study in Chapter 8 was longitudinal and examined changes in nutrition knowledge and dietary behaviour over a one-year period (from 1993 to 1994). This study aimed to provide information on the extent to which healthier changes in dietary intake are related to increases in nutrition knowledge. While changes occurred in dietary intake (fat and sugar intake decreased significantly, the increases in fruit and vegetable consumption were insignificant), knowledge scores remained unchanged. The final chapter discusses the key findings of this research, its implications and areas worthy of future investigation. For example, the results from this research suggest that knowledge is an important factor in food choice and should not be discounted as a part of health promotion. It may also be useful to integrate the construct of knowledge into the social cognition models of dietary choice or indeed to develop a new model to include knowledge along with motivational constructs from the social cognition models.

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Karthigesu, Shantha Premila. "The perceived influence of grandparents’ beliefs and attitudes on parents’ breastfeeding behaviour and paediatric vaccination decisions." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2020. https://ro.ecu.edu.au/theses/2165.

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Human infants are highly dependent on their parents for a prolonged period of time. The resources required to raise a child cannot be provided by biological parents alone and requires the assistance of others, usually relatives. Grandparents among them, have played the most significant role. With increased life expectancy in Western, educated, industrialised, rich and democratic (WEIRD) societies, grandparents have come to the forefront as informal childcare providers. Although the influence of a child’s social environment on health has been well-studied, the influence of grandparents, specifically in regard to breastfeeding remains inconclusive, while grandparental influence on paediatric vaccinations has not been investigated. Using an exploratory mixed-method research design this study investigated the perceived influence of grandparents on parents’ breastfeeding behaviour and paediatric vaccination uptake in Perth, Western Australia. Focus group discussions were conducted to collect exploratory data on the beliefs, attitudes and perceived sources of influence on parents and grandparents towards breastfeeding and paediatric vaccines. Qualitative data was collected from Australian Aboriginal (N=15) and non-Aboriginal participants (N=73). Interpretative phenomenological data analysis revealed different themes for Aboriginal and non- Aboriginal participants. Although both groups reported positive beliefs and attitudes towards breastfeeding, Aboriginal grandmothers reported having a direct and positive influence on breastfeeding behaviour in young Aboriginal mothers. The influence of grandparents on non-Aboriginal parents’ breastfeeding behaviour was not always positive. The participants also shared positive beliefs and attitudes towards paediatric vaccines. Grandparents expressed full confidence in paediatric vaccines based on their memories of the diseases. Parents who had been vaccinated as children accepted immunisation as a normal part of child rearing. This data then informed the development of a questionnaire to quantitatively assess perceived grandparental influence. Data from mothers, fathers, grandmothers and grandfathers (N=278) were analysed to test the effects of beliefs, attitudes and perceived sources of influence on breastfeeding behaviour and paediatric vaccine uptake. The study sample was typical of WEIRD societies and reported high levels of educational qualifications and income. Positive attitude scores did not have a significant effect on breastfeeding behaviour in parents or grandparents. This suggested the influence of external factors such as physiological challenges to breastfeeding, physical ecology of the mother and the attitudes towards formula feeding. Maternal grandmothers did report offering the most advice regarding breastfeeding. However, the type of advice imparted and the effect of the advice on breastfeeding behaviour could not be discerned from this data. This cohort reported good knowledge on the benefits of paediatric vaccines and positive group influences and had low scores on vaccine anxiety. This was reflected by high confidence levels on the information available to them and the protection conferred to their children by vaccines. Grandparents who had high scores on knowledge and positive group influence reported they would advise their children on vaccinations for grandchildren. Less than 2% of the study sample scored high on vaccine anxiety and reported vaccine refusal and lack of confidence, which limited the study of whether grandparents could positively influence vaccine hesitant parents. The quantitative study sample is not representative of the average population which restricts generalisation of the findings. The precise nature of grandparents’ influence on parents’ infant feeding and paediatric vaccines need further exploration among the different cultural groups. Education, income levels and cultural and traditional child care practices are likely to have the most influence on the relationship between parents and grandparents, and consequently the extent to which grandparents’ opinions are valued and accepted in relation to breastfeeding and paediatric vaccinations decisions

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Bekker, Francette. "The provision of healthy food in a school tuck shop : does it influence Bloemfontein primary school learners’ perceptions, attitudes and behaviour towards healthy eating." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71694.

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Thesis (MNutr)--Stellenbosch University, 2012.
ENGLISH ABSTRACT: Introduction and Objectives: Schools can serve as a supportive environment for the promotion of healthy eating in order to prevent childhood overweight and obesity and the development of noncommunicable diseases such as cardiovascular diseases, type 2 diabetes mellitus, fatty liver disease, muscoskeletal disorders and some cancers. Tuck shops at schools often offer unhealthy items that are energy dense and high in fat and/or sugar with a low content of vitamins, minerals and dietary fibre. The availability of unhealthy items in tuck shops prevents learners from making healthy food choices, since children tend to choose unhealthy foods when given a choice. In addition to unhealthy items offered by tuck shops, learners also bring unhealthy items to school in their lunchboxes. The aim of the study was to investigate the influence of a nutritionally-regulated tuck shop on primary school learners’ perceptions, attitudes and behaviour towards healthy eating in a Bloemfontein, Afrikaans medium, co-education primary school, and compare it to learners of a school with a conventional tuck shop. Methods: In a cross-sectional survey with an analytical component, grade 2 to 7 learners in a school with a nutritionally-regulated tuck shop (n=116) and a school with a conventional tuck shop (n=141) completed a questionnaire. Six learners per grade also took part in focus group discussions. Questions related to lunchbox contents and perceptions, attitudes and behaviour towards the tuck shop and healthy eating. Nutritional information of the items available for purchase at each of the school tuck shops was collected. Results: The lunchboxes of learners in the school with a nutritionally-regulated tuck shop contained significantly (p<0.05) more healthy items (fruit, water and muffins), as well as significantly more unhealthy items (sweets and chips). The items offered by the nutritionally-regulated tuck shop contained approximately half the kilojoules compared to items offered by the conventional tuck shop. Learners in the school with a nutritionally-regulated tuck shop liked certain fruits and vegetables significantly (p<0.05) more than learners in the school with a conventional tuck shop. Statistical significant differences (p<0.05) between different grades and gender showed that grade 2 learners in both schools had a less positive attitude towards certain fruit and vegetables compared to the older learners, while girls in both schools were more positive towards certain fruits and vegetables compared to boys. Younger learners had a more positive attitude towards their nutritionally-regulated tuck shop than older learners. In both schools learners had similar perceptions regarding the particular school’s tuck shop and healthy eating. Conclusion: The hypothesis that learners in a school with a nutritionally-regulated tuck shop have positive attitudes, perceptions and behaviour towards healthy eating was rejected. The availability of healthier items in a school tuck shop had a positive influence on certain behaviours and attitudes of learners, but the potential value of controlling the type of items available for purchase at schools might be counteracted by lunchbox contents, certain fixed eating patterns, perceptions of learners and previous exposure to a conventional tuck shop. Recommendations include a multi-pronged approach such as the Health Promoting Schools concept.
AFRIKAANSE OPSOMMING: Inleiding en doelwitte: Skole bied ‘n omgewing waar goeie eetgewoontes bevorder kan word ten einde oorgewig en vetsug in kinders te voorkom, asook die ontwikkeling van nie-oordraagbare siektes soos kardiovaskulêre siektes, tipe-2 diabetes mellitus, lewervervetting sindroom, ortopediese komplikasies en sekere soorte kanker. Snoepies in skole voorsien meestal ongesonde items met ‘n hoë energie, vet- en/of suikerinhoud en wat laag is in vitamiene, minerale en dieetvesel. Die beskikbaarheid van ongesonde items in snoepies verhoed dat leerders gesonde voelselkeuses uitoefen, omdat kinders geneig is om voorkeur aan ongesonde kos te gee as hulle 'n keuse gebied word. Benewens die ongesonde items wat snoepies aanbied, neem leerders boonop ongesonde kos in hul kosblikke skooltoe. Die doel van die studie was om by 'n Afrikaans dubbelmedium laerskool in Bloemfontein die invloed van ‘n voedingkundig-gereguleerde snoepie op leerders se persepsies, houdings en gedrag teenoor gesonde eetgewoontes te ondersoek en te vergelyk met leerders in 'n skool met 'n konvensionele snoepie. Metodes: In ‘n deursnit-opname met ‘n analitiese komponent, het graad 2 tot 7 leerders in ‘n skool met ‘n voedingkundig-gereguleerde snoepie (n=116) en ‘n skool met ‘n konvensionele snoepie (n=141), ‘n vraelys ingevul. Ses leerders in elke graad in elk van die skole het ook aan fokusgroepbesprekings deelgeneem. Vrae het oor die inhoud van kosblikke, asook persepsies, houding en gedrag teenoor die snoepie en gesonde eetgewoontes, gehandel. Voedingsinligting rakende die items wat in elk van die skole se snoepies verkoop word, is ook ingesamel. Resultate: Die kosblikke van leerders in ‘n skool met ‘n voedingkundig-gereguleerde snoepie het statisties beduidend (p<0.05) meer gesonde items bevat (vrugte, water en muffins), maar ook beduidend meer ongesonde items (lekkergoed en aartappelskyfies). Voedsel-items wat in die voedingkundig-gereguleerde snoepie beskikbaar was, het omtrent die helfte minder energie bevat as voedsel-items wat in die konvensionele snoepie beskikbaar was. Leerders in ‘n skool met ‘n voedingkundig-gereguleerde snoepie het beduidend (p<0.05) meer van sekere groente en vrugte gehou as leerders in ‘n skool met ‘n konvensionele snoepie. Statisties beduidende (p<0.05) verskille tussen verskillende grade en die houding van verskillende geslagte dui daarop dat graad 2 leerders in albei skole minder positief gevoel het oor sekere groente en vrugte as ouer leerders, terwyl meisies in albei skole ‘n meer positiewe houding teenoor sekere groente en vrugte getoon het as seuns. Jonger leerders het ‘n meer positiewe houding teenoor hulle voedingkundig-gereguleerde snoepie getoon as ouer leerders. In albei skole het leerders soortgelyke persepsies rondom hul onderskeie skole se snoepies en gesonde eetgewoontes openbaar. Gevolgtrekking: Die hipotese dat leerders in ‘n skool met ‘n voedingkundig-gereguleerde snoepie positiewe persepsies, houding en gedrag teenoor gesonde eetgewoontes toon is nie aanvaar nie. Die beskikbaarheid van gesonder items in ‘n skoolsnoepie het 'n positiewe invloed op sekere eetgewoontes en houdings van die leerders, maar die potensiële waarde daarvan om die tipes voedsel wat by skole te koop aangebied word te reguleer mag egter teengewerk word deur kosblikke se inhoud asook sekere vaste eetpatrone, persepsies van leerders en vorige blootstelling aan ‘n konvensionele snoepie. ‘n Veelvoudige benadering soos die konsep van ‘n Gesondheidbevorderingskool word aanbeveel.

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Kruger, Karlien. "The use of a musical play in the transfer of knowledge on nutrition, a healthy lifestyle and the prevention of obesity / K. Kruger." Thesis, North-West University, 2010. http://hdl.handle.net/10394/4249.

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Background: South Africa is experiencing a unique double burden of disease due to the nutrition transition, facing diseases related to both under and over nutrition. Childhood obesity is associated with a poor childhood diet, physical inactivity and sedentary lifestyle. Promoting healthy eating and physical activity is important. Promoting healthy eating patterns and regular activity are essential components of lifestyle modification of children. An obesity prevention programme with elements of music and dance for children aimed at improved nutritional knowledge to combat ignorance ofhealthy diets and highlight importance ofphysical activity seemed to be an ideal solution. Aim :The aim of this study was to investigate the effect of a novel nutrition intervention programme based on the South African food-based dietary guidelines (SAFBDG; musical play) on the transfer of nutritional knowledge towards a healthy lifestyle (healthy dietary behaviour and physical activity) in primary school children. Methods: Children (n=203; boys=93; girls=110), aged 6 to 12 years from different ethnic groups were recruited. Participation was voluntary. Only children whose parents/guardians gave written informed consent were included. Children were randomly assigned to a control group (n=99) exposed to the standard school nutrition curriculum and to an experimental group (n=104) who also participated in a musical play with short messages based on the SAFBDG for two sessions a week for five weeks. After each session pamphlets on the relevant SAFBDG message were given to the children to take home. At the end of the intervention the children performed the musical play for their parents/guardians. At baseline demographic information was obtained, anthropometrical measurements taken, a validated nutritional knowledge questionnaire administered and a 24-hour dietary recall completed. All measurements except the demographic questionnaire were repeated after the intervention. Results: Overall nutritional knowledge of the children exposed to the musical play increased with statistical and practical significance [11.9% (p < 0.05) versus. 11.1% (d> 0.05)]. Children 6 to 12 years consumed more grains and less dairy, vegetables, :fruit and meat than the recommended intakes. No measurable changes occurred in food group consumption after the intervention except for :fruit intake which increased in girls aged 8 -10 years in the experimental group (p < 0.05). Boys and girls aged 6 12 years have inadequate intakes « 67% of the Recommended Dietary Allowances (RDA)) of calcium, vitamins A, C, D, and B12, iron and folate. No statistically significant changes anthropometrical measurements were found after the intervention. Z-scores showed that children from the lower grades (grade 1 3) were more prone to stunting while children from the higher grades (grade 4 -6) were more prone to be obese. Furthermore, a high prevalence of overweight and obesity was found amongst white boys, whereas stunting was more prevalent amongst black boys and girls. Conclusion: The results of the study showed that the musical play based on the SAFBDG improved overall nutritional knowledge in a group of primary school children. Diet quality based on food group recommendations and nutrient intakes remained low which suggests that other factors apart from nutritional knowledge influenced food choices and, therefore, the diet quality in this group of children.
Thesis (M.Sc. (Nutrition))--North-West University, Potchefstroom Campus, 2010.

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Sieff, Daniela F. "The effects of resource availability on the subsistence strategies of Datoga pastoralists of north west Tanzania." Thesis, University of Oxford, 1995. http://ora.ox.ac.uk/objects/uuid:a499a1dd-3c21-4be9-8572-261a9625b85d.

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Many early anthropological studies treated pastoralist populations as egalitarian, however there is considerable variation in the resources available to individual households. This thesis considers how resources influence the subsistence system of the pastoral Datoga of Lake Eyasi. The two categories of resources considered are wealth and labour. The labour available to Datoga households does not influence the herding strategies of those households. In turn, the herding strategies do not affect the dynamics of cattle herds. This is because households that are short of labour can arrange for their animals to be herded by members of different households, and there are no discernible costs associated with this. Wealth, defined by livestock holdings, can be measured either as total household wealth, or as wealth per capita. These are conceptually distinct. Among the Datoga, households that are wealthy in terms of total livestock holdings, are also wealthy in terms of wealth per capita, but not proportionally more so. Once households have about five livestock units per capita, any increase in household wealth is used to attract new people to the household, rather than to increase the wealth of existing household members. For many aspects of the production system overall household wealth and wealth per capita have a similar effect, but this is not always the case. In some instances overall household wealth can explain variation between households, whereas wealth per capita cannot. This occurs when the absolute number of animals belonging to a household is important. In terms of provisioning the household and household economics, per capita wealth explains more of the variation between households. Overall the Datoga are struggling to survive. They have been alienated from more fertile areas, and consequently they are poor, and herd productivity is low. This is due to the low reproduction rate of cattle, and the high commercial offtake rate of both cattle and small stock. The high commercial offtake rate is driven by subsistence needs and most income is used to buy grain and veterinary products. However, there is considerable variation between households, and compared to poor households, wealthy households have a comparatively low offtake rate of livestock, in terms of both mortality and sales. Consequently, they are managing to retain their livestock holdings, or in a few cases to increase the size of their herds. However, wealthy households are in the minority, and the majority of households are caught in a declining cycle of poverty, and will eventually be forced to drop out of the pastoral system.

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Monteiro, Sarojini Maria Dos Remedios. "Improving nutrition and physical activity behaviours of mothers with young children." Thesis, Curtin University, 2015. http://hdl.handle.net/20.500.11937/173.

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This study reported on the development, implementation and evaluation of a diet and physical activity behaviour change randomized controlled trial for mothers of young children. The six-month flexible delivery intervention was delivered via playgroups to mothers of young children. The intervention demonstrated statistically significant improvement in the intensity of vigorous, moderate and total physical activity duration. It also demonstrated a statistically significant increase in fruit and vegetable intake, and an improvement in fat and fibre eating behaviours.

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Wright, Thomas. "Nutritional programming of behaviour in the rat." Thesis, University of Nottingham, 2012. http://eprints.nottingham.ac.uk/12574/.

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Epidemiological studies indicate that the prevalence of obesity and overweight is increasing rapidly in both developed and developing countries. Against this background it is important to determine the effects of obesity upon health and well-being. Defining the impact of obesity upon behaviour lies within the scope of such studies. It is known that variation in the maternal diet during early sensitive periods of development can programme risk of obesity and metabolic dysfunction in offspring. Although the effect of maternal obesity and/ or obesogenic diet throughout pregnancy and lactation on a wide range of physiological systems in rats is well documented, the effect of such manipulations on behaviour is yet to be elucidated in detail. The initial aim of the present thesis was to use a rat model to investigate the relative contribution of maternal obesity induced by a hyperenergetic cafeteria diet (CD) prior to pregnancy and/or maternal exposure to the CD during pregnancy and lactation, on anxiety and exploratory behaviour in adult offspring. Despite all of the maternal feeding periods having some contribution to offspring behaviour, the lactation period appeared to be the most important, with maternal CD having an anxiolytic effect in offspring exposed to the elevated plus maze and open field paradigm. It was hypothesized that maternal exposure to CD during lactation would also impact upon appetite related behaviour and performance on behavioural measures of learning and memory in adult offspring. Maternal CD during the lactation period altered feeding behaviour as measured by the behavioural satiety sequence in adult offspring of both sexes. The structural integrity of feeding behaviour was grossly perturbed in female offspring, with a significant delay in the onset of satiety. Maternal CD during lactation enhanced memory performance on a novel object discrimination paradigm in male offspring, but reduced performance of females. CD feeding during lactation increased both 5-hydroxytryptamine (5-HT) and dopamine (DA) concentration and reduced 5-HT turnover in the hypothalamus, but not the hippocampus or the frontal cortex, in both male and female offspring. The findings outlined in the present thesis demonstrate for the first time that maternal exposure to an obesogenic diet during early sensitive periods of development can programme a range of behaviours in adult offspring of both sexes.

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Hesketh, Therese. "Health, nutritional and behavioural indicators in adolescents in urban and rural China." Thesis, University College London (University of London), 2001. http://discovery.ucl.ac.uk/10041865/.

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Objectives: to determine differences in health, nutritional and behavioural indicators in adolescents in urban and rural Zhejiang Province, and to make recommendations for the development of adolescent health services and health education in eastern China. Setting: Twelve secondary schools in three distinct socio-economic and geographic areas: Hangzhou (urban). Xiaoshan (wealthy rural) and Chunan (poor. mountainous rural) in Zhejiang Province, eastern China. Methods: A two stage cross-sectional survey was carried-out. The first stage was carried out in six middle and high schools and involved the development, testing and administration of a questionnaire covering a range of health and lifestyle issues. Areas of importance highlighted in Stage One informed the content of Stage Two which consisted of anthropometry. haemoglobin measurement, and a further questionnaire focusing pm1icularly on nutritional status and psychological morbidity. Results: There were 4197 respondents aged predominantly 12-18 in Stage One and 1577 respondents aged 12-16 in Stage 2. Key findings included significant differences in sociodemographic patterns in the three areas: 90% of Hangzhounese were only children. compared with 55% in Xiaoshan and 8% in Chunan. Regular smoking was very rare (0.3%) and non-existent in girls. Underweight was far more prevalent than overweight 18% and 3.6% (P < O.OO 1). The strongest predictor of overweight was urban residence OR 9.1(95% Cl 3.7,23). Over half of all girls (51%) were anaemic, with significantly more in Chunan.(P < O.OOI). Anxiety and depression were common in both sexes and in both urban and rural areas, but very few sufferers had sought professional help. Much of the psychological morbidity was related to academic pressure. Conclusions: As a result of the study, the first of its kind in the Province, changes have been made to the health education curriculum for secondary schools in Zhejiang and there are plans to introduce counselling services into schools.

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Clogg, L. J. "Determinants of infant crying behaviour : the role of carbohydrate absorption." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63853.

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15

De, Almeida Maria Daniel Barbedo Vaz Ferreira. "Migration and changing food habits : a study of the Cape Verdeans in Portugal." Thesis, King's College London (University of London), 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388257.

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16

Bazazi, Sepideh. "Nutritional needs, cannibalism and collective behaviour in animal groups." Thesis, University of Oxford, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.543049.

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17

McBride, Sharon. "The effect of canteen menu on nutritional knowledge, attitudes and behaviour of year five students." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 1992. https://ro.ecu.edu.au/theses/1128.

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Eating habits are learned during childhood, and patterns of behaviour established in childhood have important health ramifications throughout life. Over half of all deaths in Australia are linked to diet with over-consumption of saturated fat, sugar and salt, and lack of fibre being identified as particular problem areas. Nutrition education is an important component of primary health education curricula, and yet school canteens, and integral part of the school environment, do not necessarily offer healthy food choices that support nutrition instruction in the classroom. This study investigated the effect of canteen menu on student knowledge and attitudes toward nutrition and dietary behaviour at school. A two-part questionnaire and dietary analysis were administered to Year Five students in six metropolitan government primary schools. Schools were selected to form one of three groups; those with canteens that sold predominantly healthy food, those that did not, and those that changed to selling predominantly healthy food during the study period. A pretest was administered at the beginning of the study and were followed with a post-test after a five month period. Differences between groups were apparent in dietary behaviour and attitudes towards nutrition. Students with access to canteens with a healthy menu consumed less fat, less salt and more fibre while at school compared with students in schools where the menu was nutritionally inferior. The analysis of the attitudinal section of the questionnaire revealed several differences in student opinion about nutrition. In general, those students with access to healthy canteen menus displayed more positive attitudes towards good nutrition. Use patterns of the canteens and knowledge about nutrition were similar for each group. The study revealed that the nature of canteen food is an important influence on dietary behaviour at school. In addition, it appears that the canteen menu may affect students' attitudes toward good nutrition. This influence may have important ramifications for the present and future health of young Australians and warrants careful consideration by decision-making authorities.

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18

Wigglesworth, John Michael. "Studies on the culture of Penaeus monodon, P. schmitti and P. vannamei (Crustacea: Penaeidae) with particular reference to nutrition." Thesis, Heriot-Watt University, 1989. http://hdl.handle.net/10399/913.

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19

Roberts, Susan. "The effect of dietary protein source on plasma parameters related to stress and behaviour in pigs varying in their susceptibility to stress /." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56819.

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The present study was performed to determine if pigs varying in their susceptibility to stress, adapted to a casein-based diet, experience an improvement in biochemical parameters related to stress and behaviour compared to pigs adapted to the traditional western canadian cereal-based swine diet. Experiment 1 involved separating fifty-eight, 8-week old pigs according to genotype with respect to the halothane gene. Within each genotype pigs were divided into 2 groups and assigned to either a control diet or to a diet where most of the protein source was substituted for casein. All animals were adapted to diet for 6 weeks and experienced a weekly blood sampling stressor. Day 1, 14 and 35 of the plasma samples were analyzed for glucose, cortisol, ACTH, insulin, pyridoxal 5$ sp prime$-phosphate (PLP), amino acid concentrations and dopamine-$ beta$-hydroxylase (DBH) activity; metabolic indices known to be responsive to stress. Experiment 2 involved separating fifty-seven, 14-week old pigs in the same manner, then adapting the pigs to their respective diets for a period of 4 weeks. Afterwards, pigs were transferred from their pen to a novel pen-maze situation where they had their behaviour monitored for a period of one hour. Results of these experiments have revealed that (1) the stress susceptible and carrier pigs experienced reduced day 35 plasma glucose, PLP concentrations and DBH activity compared to normal pigs; (2) dietary adaptation to the casein diet resulted in greater day 14 and 35 PLP levels and day 35 essential amino acid lysine, threonine, methionine, tryptophan and arginine concentrations compared to control-adapted pigs; (3) the carrier pigs investigated their surroundings more frequently than the stress susceptible pigs, and the normal pigs engaged in the through-maze behaviour more often than the stress susceptible pigs; and (4) adaptation to the casein diet, compared to the control diet, resulted in fewer displacement-type behaviours such as drinking

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20

Stapleton, Denise R. "Development, implementation and evaluation of a nutrition education and behaviour program for children with cystc fibrosis." Thesis, Curtin University, 2001. http://hdl.handle.net/20.500.11937/784.

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Background: Cystic fibrosis (CF) is a genetically inherited disease which adversely affects the respiratory and gastrointestinal systems. Malnutrition is a major clinical problem in individuals with the disease. Nutritional interventions are warranted as improvements in nutritional status could improve the rates of morbidity and mortality associated with the disease. The review of the literature indicated the need to develop a behavioural-based nutrition prevention program in order for children to achieve CF dietary requirements and appropriate pancreatic enzyme replacement therapy.Methods: The intervention program, Go and Grow with CF, and nutrition and pancreatic enzyme knowledge and self-management questionnaires were developed for children with CF and their carers as part of this thesis. Social learning theory constructs which particularly assist children in achieving desirable behaviours were applied during the development of the Go and Grow with CF program. The program consisted of workshops and a home-based course.Fifty eight children with cystic fibrosis, aged 2 to 11 years, and their carers participated in a clinical trial that was designed to assess the effects of the Go and Grow with CF pilot program on knowledge, self-management, behaviour, dietary intake and body composition, using anthropometry. Process evaluation was conducted on the pilot program and on the clinic-wide implementation of the revised Go and Grow with CF program. The revised program included the Australian Pancreatic Enzyme Replacement Therapy Guidelines and the effects of fat-based dosing were assessed with a cohort of 29 children with CF-related pancreatic insufficiency aged 1 to 13 years.Results: Similar to the process evaluation of the pilot program, 100% of carers who completed the revised home-based course indicated that they would recommend Go and Grow with CF to other families with a child who has CF. The 'objective assessment of knowledge indicated a significant m improvement in' children's knowledge in the short-term. There were no statistically significant improvements in any of the other parameters assessed. The lack of significant improvements in self-management, behaviour, dietary intake and anthropometry may have been because the program had no effect, the parameters assessed or the instruments used (particularly the questionnaires) were not sufficiently sensitive, the sample size (which was determined by the CF population available) was too small or the duration of the intervention and follow-up was too short.Conclusion: Carers' unanimous recommendation of Go and Grow with CF, together with high levels of perceived learning, reported increase in confidence and improvement in children's knowledge in the short-term, indicate the benefits of the program.Although there was no statistically significant improvement in the anthropometric measurements after the intervention, 'the extensive data obtained during this study suggest that measurements of height and weight may underestimate the presence of poor nutritional status. It is likely that comprehensive assessments of body composition of children with CF would be useful in detecting mild degrees of malnutrition and in providing information about the effects of nutritional status on morbidity and mortality associated with the disease.Fat-based pancreatic enzyme replacement therapy dosing warrants further investigation given that parents had a strong preference for this method and that fat absorption remains abnormal in the majority of individuals who have pancreatic insufficiency. Evaluation of all pancreatic enzyme replacement therapy dosing methods are needed and this research suggests that dose should be assessed on a meal and snack basis, rather than just on daily intake, in order for levels of adherence to be examined.The apparent absence of a long-term effect of a single exposure to the program on knowledge suggests that regular, ongoing education and counselling is required by families to reinforce aspects related to the child's current stage of development and disease status.

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21

Bellinger, Leanne. "Nutritional programming of feeding behaviour, energy expenditure and body fatness." Thesis, University of Nottingham, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.428940.

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22

Lundqvist, Anette. "Nutritional aspects of behaviour and biology during pregnancy and postpartum." Doctoral thesis, Umeå universitet, Allmänmedicin, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-117427.

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Background A well-balanced nutritious diet is important for the pregnant woman and the growing fetus, as well as for their future health. Poor nutrition results from both over-consumption of energy-rich foods which can lead to a higher weight gain than is healthy and under-nutrition of essential nutrients. Food intake is regulated in complex biological systems by many factors, where steroid hormone is one factor involved. The overall aim of this thesis is to describe dietary intake, vitamin D levels, dietary information and dietary changes, and to study the relation between allopregnanolone and weight gain during pregnancy and postpartum. Methods Study I was a qualitative study with focus group interviews with 23 pregnant women. The text was analysed with content analysis. Study II was a quantitative cross-sectional study conducted in early pregnancy (n=209) with a reference group (n=206). Self-reported dietary data from a questionnaire was analysed using descriptive comparative statistics and a cluster analysis model (Partial Least Squares modelling). Study III had a quantitative longitudinal design. Vitamin D concentrations were analysed in 184 women, collected on five occasions during pregnancy and postpartum. Descriptive comparative statistics and a linear mixed model were used. Study IV was a quantitative longitudinal study with 60 women. Concentrations of allopregnanolone were analysed in gestational week 12 and 35. Descriptive and comparative statistics as well as Spearman’s correlation (rho) were used to describe the relationship between weight gain and allopregnanolone concentrations. Results The focus group interviews showed that women wanted to know more about different foods to reduce any risk for their child but the information about foods was partly up to themselves to find out. They expressedfeelingsof insecurityand guiltif they accidentallyate something“forbidden”. The recommendationswere followedas best as possiblealong withcommon sense todeal with dietchanges. The main themes were “Finding out by oneself”, “Getting professional advice when health problems occur”, “Being uncertain” and “Being responsible with a pinch of salt”. Some differences in the dietary patterns were found among the pregnant women compared to references, with less, vegetables (47 g/day), potatoes/rice/pasta (31 g/day), meat/fish (24 g/day) and intake of alcohol and tobacco/snuff but a higher intake of supplements. Bothpregnant women and referenceshad intakes offolatethrough diet45% (pregnant) and 22% (references) lower than current recommendations(500vs400g/day). Vitamin Dintake was34% lower than the recommendationsof 10mg/day. At least a third of the participants had insufficient plasma levels below 50 nmol/L of vitamin D. Season was a strong factor influencing the longitudinal pattern. Gestational week, season, total energy intake, dietary intake of vitamin D, and multivitamin supplementation over the previous 14 days were factors related to vitamin D levels. A correlation betweenallopregnanoloneconcentrations ingestationalweek 35and weight gainin weeks12–35was seen (p = 0.016). Therewas alsoa correlation betweenthe increase inallopregnanolone(weeks12–35) andweight gain(see above) (p = 0.028). Conclusions Dietary recommendations were described as contradictory and confusing and the dietary advice felt inadequate. The women faced their diet changes and sought information on their own but would have wished for more extensive advice from the midwife. The intake of vitamins essential for pregnancy was lower than recommended, which is also confirmed by low plasma levels of vitamin D in at least one third of the pregnant women. Vitamin D levels peaked in late pregnancy. Aside from gestational week and season which were related to plasma levels, intake from foods and supplements also affected the levels. Reasons for weight gain are complex and depend on many factors. Allopregnanolone is a factor that was seen to relate to the weight gain of the studied pregnant women.
Bakgrund En välbalanserad näringsrik kost är viktig för den gravida kvinnan och det växande fostret, så även för deras framtida hälsa. En bristfällig kost kan utgöras av både överförbrukning av energirika livsmedel vilket kan leda till högre viktuppgång än vad som är hälsosamt och bristande intag av viktiga näringsämnen. Kostintag regleras av komplexa biologiska system där flera faktorer är inblandade däribland steroidhormonet allopregnanolon. Det övergripande syftet med denna avhandling är att under och efter graviditet beskriva kostintag, vitamin D-nivåer, kostinformation och kostförändringar och att studera allopregnanolons relation till viktökning. Metod Studie I var en kvalitativ studie med fokusgruppsintervjuer med 23 gravida kvinnor. Texten analyserades med innehållsanalys. Studie II var en kvantitativ tvärsnittsstudie som genomfördes i tidig graviditet (n = 209) och med en grupp icke-gravida kvinnor (kontrollgrupp) (n=206). Självrapporterade kostdata från ett frågeformulär analyserades med beskrivande, jämförande statistik och en klusteranalysmodell (Partial Least Squares modellering). Studie III hade en kvantitativ longitudinell design. Vitamin D-koncentrationer analyserades hos 184 kvinnor, vid fem tillfällen under graviditeten och efter förlossningen. Beskrivande, jämförande statistik och en linjär mixad regressionsmodell användes. Studie IV var en kvantitativ longitudinell studie med 60 kvinnor. Koncentrationerna av allopregnanolon analyserades vid graviditetsvecka 12 och 35. Beskrivande och jämförande statistik samt Spearman’s korrelation användes för att beskriva samband mellan viktökning och koncentrationer av allopregnanolon. Resultat Intervjuerna i studie I visade att kvinnor ville veta mer om olika typer av mat för att minska en eventuell risk för sina barn men kostinformation var delvis upp till dem själva att ta reda på. De VIII uttryckte känslor av osäkerhet och skuld om de råkat äta något ”förbjudet”. Rekommendationerna följdes så väl som möjligt, tillsammans med sunt förnuft för att hantera kostförändringar. Huvudteman var ”Söka information på egen hand”, ”Få professionell rådgivning när problem uppstår”, ”Känna sig osäker” och ”Ta ansvar med en nypa salt”. I studie II kunde man se vissa skillnader i kostmönster bland de gravida kvinnorna jämfört med kontrollgruppen: mindre intag av grönsaker (47 g/dag), potatis/ris/pasta (31 g/dag), kött/fisk (24 g/dag) och alkohol och tobak/snus och ett högre intag av kosttillskott. Både gravida kvinnor och kontrollgruppen hade lägre intag av folsyra via kosten med 45 % (gravida) och 22 % (kontrollgruppen) än de gällande rekommendationer som är (500 resp 400 g/dag). I studie III såg man att inta et av vitamin D var 34 % lägre än rekommendationen på 10 µg/dag. Minst en tredjedel av deltagarna hade otillräckliga plasma nivåer av vitamin D, under 50 nmol/L. Årstid var en stark faktor som påverkar det longitudinella mönstret. Graviditetsvecka, säsong, totala energiintaget, intaget av vitamin D och multivitamintillskott under de senaste 14 dagarna var faktorer som relaterade till Dvitaminnivåer. I studie IV sågs ett samband mellan allopregnanolon-koncentrationer vid graviditetsvecka 35 och viktökning från vecka 12 till 35 (p = 0,016). Det sågs också ett samband mellan ökningen av allopregnanolon (vecka 12–35) och viktökningen (se ovan) (p = 0,028). Slutsatser Kostrekommendationer beskrevs som motsägelsefulla och förvirrande och kostråden de fick uppfattades som otillräckliga. Kvinnorna tog itu med sina kostförändringar och sökte information på egen hand men hade önskat mer omfattande råd från barnmorskan. Intaget av vitaminer viktiga för graviditeten var lägre än rekommendationerna, vilket också bekräftas av låga plasmanivåer av D-vitamin hos cirka en tredjedel av de gravida kvinnorna. D-vitaminnivåerna nådde en topp i slutet av graviditeten. Graviditetsvecka och säsong på året påverkade D vitaminnivåer, så även intag via mat och kosttillskott. Orsakertill viktökning är komplexa och beror på många faktorer. Allopregnanolon är en faktor som sågs relatera till viktökningen hos de undersökta gravida kvinnorna.

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23

Leitch, Margaret. "Impulsivity and eating behaviour : an examination of subtypes of impulsive behaviour and overeating in healthy females." Thesis, University of Sussex, 2011. http://sro.sussex.ac.uk/id/eprint/6310/.

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A wealth of support has shown higher levels of state and trait impulsivity can be found among those individuals prone to developing problematic eating behaviors and obesity. Thus, upon commencing the investigations in this thesis, it was hypothesized that impulsivity is an individual difference implicated in overeating behaviour. Increasing information indicates that there are divisions within impulsivity subtypes. Prior to this thesis, studies in the field of eating behaviour had not distinguished between subtypes of impulsivity. This was problematic because it limited researchers ability to describe how impulsivity is specifically involved in the perpetuation of overeating behaviour. The purpose of this Thesis was to provide a methodical inquiry into the relationship between impulsivity, and its relation with overeating behaviour. This objective was achieved by separating three prioritites, first to determine if impulsivity was higher in women who self report overeating, second to define differences between impulsivity classifications and determine if there was a consistnent pattern between self reported overeating and a relation to a subtype of overeating behaviour, and third to designate a specific impulsivity subtype to individuals who self report overeating behaviour. Six Experimental Chapters explored these three priorities. Two exploratory correlational/regression analysis were used to refine our ability to operationalize measures of self reported overeating and impulsivity (Chapters 2 and 5). Chapter 3 and Chapter 5 were devoted to assess the impact that ingestion of palatable food, and the violation of cognitive boundaries of restraint, have on subsequent impulsivity. The two remaining investigations were structured to assess the impact that environmental factors have on impulsive behaviour. In Chapter 4, a Controlled versus Unrestricted eating environment were manipulated to determine whether overeaters benefit from a structured breakfast meal prior to completing a battery of impulsivity tasks. In Chapter 7, anticipation for a rewarding food item was manipulated in two conditions. In this final Chapter, the impact that anticipation for rewarding food in self reported overeaters was assessed. The battery of impulsivity tasks in this thesis include the Balloon Analogue Risk Task (BART), The Go No Go task, the Matching Familiar Figures task (MFFT), and two versions of the Delay Discounting Task (DDT). Impulsivity was classified along a spectrum of Reward Reactivity versus Inhibition subtypes, based on Evenden´s (1999) classification of impulsive behaviour. Participants tendency to overeat was based on a dual classification of tendency to restrain eating (Three Factor Eating Questionnaire- Restraint) with tendency to overeat (Three Factor Eating Questionnaire-Disinhibition subscale). The outcomes of the five experimental investigations in this thesis demonstrated a reliable pattern by which participants with high Disinhibition scores had significantly more impulsive responses on the MFFT task. These results indicated that inhibition impulsivity is the clearest individual difference to be found between healthy volunteers who self-report overeating. The role that Inhibition Impulsivity plays in the perpetuation of overeating behaviour is illustrated and discussed in each Experimental Chapter.

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24

Hodgkiss, Nicola Jane. "Behaviour, welfare and nutrition of group-housed sows fed in an electronic sow feeding system." Thesis, University of Plymouth, 1998. http://hdl.handle.net/10026.1/2605.

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A programme of study was undertaken to assess the welfare status of multiparous gestating sows housed in dynamic groups in a straw yard and fed by electronic sow feeders (ESF). Comparison of production figures from the Seale-Hayne herd with those nationally confirmed its status as a typical commercial unit. In an initial series of investigations, detailed ethograms were compiled to describe the animals' repertoire of activities and interactions. Lying and straw manipulation were found to be the predominant behaviours and attacks directed towards the head were the most commonly performed type of interaction. Although there was little evidence of aggressive behaviour, most interactions were found to occur in areas where there was an obvious source of competition, namely the feeding and lying areas. A recording scale was devised to assess the level of skin damage arising from aggressive interactions. Whilst data revealed a relationship between parity and the extent of injury, both the frequency and intensity of injury were found to be low for all animals and there was very little evidence of vulva biting, commonly cited as a major criticism of group-housing systems. Animals were observed to rest predominantly in the lying area. There was an association between parity and resting location, with older animals occupying those areas perceived to be more favourable. Recently introduced gilts and sows were observed to integrate gradually with the main group. An argument is put forward for the existence of sub-groups based upon parity within the main group, although it was concluded that it was difficult to prove such a theory. A series of voluntary feed intake (VFI) trials revealed that the animals' feeding motivation was not satisfied by the allowance fed in gestation. Results from a trial when animals were offered a high fibre, low energy diet in comparison with their conventional feed suggested that the animals had a requirement for a certain level of energy and were not motivated simply by a desire for gut-fill. However, a subsequent investigation into the animals feeding behaviour did not reveal any evidence of a frustrated feeding motivation; there was little evidence of non-feeding visits and few animals were recorded in the feed queue throughout the day. It is concluded that sows can be group-housed in a dynamic system on a restricted feed intake without detriment to their welfare or productivity status. A number of factors were found to be critical to the success of such a system including the freedom for animals to behave as individuals, the regular provision of fresh straw and adequate space for newly introduced animals to integrate gradually with the herd.

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25

Truong, Phuong Ha. "Nutrition and feeding behaviour in two species of mud crabs Scylla serrata and Scylla paramamosain." Thesis, Queensland University of Technology, 2008. https://eprints.qut.edu.au/20700/1/Phuong_Truong_Thesis.pdf.

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Mud crabs of the genus Scylla are widely exploited for aquaculture in the Asia- Pacific region. In the current study, a series of in vivo experiments were carried to assess the protein requirement, protein sparing effects of starch and the capacity of Scylla serrata to digest diets that contained different animal and plant-based feed meals and different levels and types of starch. Results from a protein requirement study indicated that juvenile S. serrata fed diets containing 45% or 55% protein demonstrated significantly higher growth responses than those fed the diet containing 25% protein. The subsequent study was carried out to determine if responses to dietary protein could be influenced by using purified wheat, potato, rice or corn starch to manipulate the gross energy level of fishmeal- based diets (18 or 15.5 MJ kg-1), i.e., to see if starch had a protein sparing effect in these animals. Overall, growth responses in this study appeared to be positively correlated with the level of protein in the diet with the highest growth rates achieved using diets containing 45% protein, regardless of the energy level of the diet. In addition, at a dietary protein level of 40% there was no evidence that the source of starch had any significant impact on growth performance or feed utilisation suggesting it had no protein sparing effect. By contrast, it was found that growth of juvenile S. serrata was strongly correlated with the intake of digestible dietary protein. The investigation of the capacity of sub-adult S. serrata to digest different animal and plant- based feed meals showed that apparent dry matter digestibility (ADMD) and apparent gross energy digestibility (AGED) values were not significant different for most selected feed meals (cotton seed, poultry, canola, fishmeal, soybean, and lupin meal). Apparent crude protein digestibility (ACPD) for all test feed meals were relatively high (86-96%). A subsequent study was carried out to determine if purified starch from different sources influenced the digestibility of fishmeal based diets. Overall, most diets containing starch were readily digested by mud crabs. In particular, there were no negative impacts on the digestibility of major nutrients (e.g. protein) observed following the inclusion of wheat, rice or corn starch in formulated feeds. Nevertheless, the apparent starch digestibility (ASD) of wheat starch decreased significantly as the inclusion level was increased from 15% to 60%, although there was no significant effect on ACPD values. At a 30% inclusion level, the ASD of diets containing different starches decreased in the order corn > wheat > potato = rice. Moreover, ACPD values were significantly higher for diets containing corn or rice starch than for those containing wheat or potato starch. The capacity of another species of mud crab commonly exploited for aquaculture in South East Asia, S. paramamosain, to digest the local plant-based ingredients (defatted soybean meal, rice bran, cassava and corn flour) was also conducted in Vietnam. Overall, the findings of this study showed that at a 30% inclusion level diets containing soybean meal or rice bran were well digested by mud crabs. In particular, the ACPD and AGED values for all diets containing soybean meal were not significantly different from the fishmeal based reference diet. Likewise, all digestibility values for the diet containing 30% rice bran were relatively high and not significantly different from the reference diet. By contrast, diets containing cassava flour appeared to be poorly utilised since their digestibility values for all parameters were lower than those from other testingredients. In summary, the apparent digestibility of dry matter, protein and energy was in the following order (from most to least digestible) soybean meal ~ rice bran > corn flour > cassava flour. In the next study the effects of attractants in diets (chicken meal, betaine, tuna oil and bait enhancer), temperature (26.5oC, 28.5oC and 30.5oC), sex (female and male) and size (small, medium and large) on feeding responses of S. serrata were investigated. Significant differences were observed in the behavioral responses of mud crabs to diets containing different attractants. Specifically, consumption of diets with chicken meal or betaine was significantly higher than for other treatments. With the exception of betaine, no significant difference in food consumption was observed when attractant inclusion levels were raised from 2% to 5%. Overall, small crabs consumed significantly more of the ration (as a percentage of body weight) than larger crabs. Temperature showed a significant impact on most behaviour of mud crabs, excepting continuation response and there was some evidence that females were significantly more active than males. Light intensity was considered as a main factor effect to crab response since there were extremely high percentage time of crab spent in half-shaded of the Y –maze which valued at 95.6%, 93.8 and 94.4% (corresponded to small, medium and large size respectively) in comparison to those of crabs spent in the unshaded side. Overall, the findings from these studies demonstrated that mud crabs have a high capacity to digest a range of plant based feed ingredients. In particular, soybean meal appeared to be well digested by both species of mud crabs examined. It was also shown that a range of purified starches were well digested by S. serrata although starch inclusion in diets did not appear to reduce the requirement for protein to promote growth. Subsequent attractant studies demonstrated that chicken meal and betaine produced significantly elevated feeding responses and food consumption when added to diets. Based on these results we propose that these ingredients can be utilised to increase the attractiveness and consumption of artificial mud crab feeds.

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26

Truong, Phuong Ha. "Nutrition and feeding behaviour in two species of mud crabs Scylla serrata and Scylla paramamosain." Queensland University of Technology, 2008. http://eprints.qut.edu.au/20700/.

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Mud crabs of the genus Scylla are widely exploited for aquaculture in the Asia- Pacific region. In the current study, a series of in vivo experiments were carried to assess the protein requirement, protein sparing effects of starch and the capacity of Scylla serrata to digest diets that contained different animal and plant-based feed meals and different levels and types of starch. Results from a protein requirement study indicated that juvenile S. serrata fed diets containing 45% or 55% protein demonstrated significantly higher growth responses than those fed the diet containing 25% protein. The subsequent study was carried out to determine if responses to dietary protein could be influenced by using purified wheat, potato, rice or corn starch to manipulate the gross energy level of fishmeal- based diets (18 or 15.5 MJ kg-1), i.e., to see if starch had a protein sparing effect in these animals. Overall, growth responses in this study appeared to be positively correlated with the level of protein in the diet with the highest growth rates achieved using diets containing 45% protein, regardless of the energy level of the diet. In addition, at a dietary protein level of 40% there was no evidence that the source of starch had any significant impact on growth performance or feed utilisation suggesting it had no protein sparing effect. By contrast, it was found that growth of juvenile S. serrata was strongly correlated with the intake of digestible dietary protein. The investigation of the capacity of sub-adult S. serrata to digest different animal and plant- based feed meals showed that apparent dry matter digestibility (ADMD) and apparent gross energy digestibility (AGED) values were not significant different for most selected feed meals (cotton seed, poultry, canola, fishmeal, soybean, and lupin meal). Apparent crude protein digestibility (ACPD) for all test feed meals were relatively high (86-96%). A subsequent study was carried out to determine if purified starch from different sources influenced the digestibility of fishmeal based diets. Overall, most diets containing starch were readily digested by mud crabs. In particular, there were no negative impacts on the digestibility of major nutrients (e.g. protein) observed following the inclusion of wheat, rice or corn starch in formulated feeds. Nevertheless, the apparent starch digestibility (ASD) of wheat starch decreased significantly as the inclusion level was increased from 15% to 60%, although there was no significant effect on ACPD values. At a 30% inclusion level, the ASD of diets containing different starches decreased in the order corn > wheat > potato = rice. Moreover, ACPD values were significantly higher for diets containing corn or rice starch than for those containing wheat or potato starch. The capacity of another species of mud crab commonly exploited for aquaculture in South East Asia, S. paramamosain, to digest the local plant-based ingredients (defatted soybean meal, rice bran, cassava and corn flour) was also conducted in Vietnam. Overall, the findings of this study showed that at a 30% inclusion level diets containing soybean meal or rice bran were well digested by mud crabs. In particular, the ACPD and AGED values for all diets containing soybean meal were not significantly different from the fishmeal based reference diet. Likewise, all digestibility values for the diet containing 30% rice bran were relatively high and not significantly different from the reference diet. By contrast, diets containing cassava flour appeared to be poorly utilised since their digestibility values for all parameters were lower than those from other testingredients. In summary, the apparent digestibility of dry matter, protein and energy was in the following order (from most to least digestible) soybean meal ~ rice bran > corn flour > cassava flour. In the next study the effects of attractants in diets (chicken meal, betaine, tuna oil and bait enhancer), temperature (26.5oC, 28.5oC and 30.5oC), sex (female and male) and size (small, medium and large) on feeding responses of S. serrata were investigated. Significant differences were observed in the behavioral responses of mud crabs to diets containing different attractants. Specifically, consumption of diets with chicken meal or betaine was significantly higher than for other treatments. With the exception of betaine, no significant difference in food consumption was observed when attractant inclusion levels were raised from 2% to 5%. Overall, small crabs consumed significantly more of the ration (as a percentage of body weight) than larger crabs. Temperature showed a significant impact on most behaviour of mud crabs, excepting continuation response and there was some evidence that females were significantly more active than males. Light intensity was considered as a main factor effect to crab response since there were extremely high percentage time of crab spent in half-shaded of the Y –maze which valued at 95.6%, 93.8 and 94.4% (corresponded to small, medium and large size respectively) in comparison to those of crabs spent in the unshaded side. Overall, the findings from these studies demonstrated that mud crabs have a high capacity to digest a range of plant based feed ingredients. In particular, soybean meal appeared to be well digested by both species of mud crabs examined. It was also shown that a range of purified starches were well digested by S. serrata although starch inclusion in diets did not appear to reduce the requirement for protein to promote growth. Subsequent attractant studies demonstrated that chicken meal and betaine produced significantly elevated feeding responses and food consumption when added to diets. Based on these results we propose that these ingredients can be utilised to increase the attractiveness and consumption of artificial mud crab feeds.

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Lasker, Gabrielle Lana. "Investigation of beliefs relating to weight gain prevention behaviours and weight related constructs in first year female students at three South African Universities." Master's thesis, Faculty of Health Sciences, 2021. http://hdl.handle.net/11427/32788.

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Introduction International as well as South African research indicates that first year female students at tertiary institutions may be specifically prone to weight gain and that these students should be targeted for weight management interventions. To contribute to this field of research a self-help weight management manual was developed for South African first year female students and tested in a controlled trial. The manual was found to result significant lower weight gain in the intervention group. The research group followed on and posited that development of further elements to combine with the self-help manual should consider beliefs students hold regarding weight gain prevention behaviours and weight related constructs. This research aimed to investigate the beliefs of first year female students from three universities in the Western Cape, South Africa regarding weight gain prevention behaviours and weight related constructs. The first objective was to elicit salient beliefs held by first year female students regarding weight gain prevention behaviours (dietary patterns, physical activity alcohol intake and sleep time) and weight related constructs (eating behaviour, body shape dissatisfaction, stress, selfesteem and depression/anxiety) using a qualitative research design (Phase 1). The second objective was to identify weight gain prevention belief patterns of first year female students, to investigate the association thereof with actual weight gain prevention behaviours and weight related constructs and identify significant predictors of the belief patterns using a quantitative cross-sectional research design (Phase 2). Methods and results The target population for both Phases was English speaking 18-20-year old first year female students who were registered for the first time for a qualification at University of Cape Town (UCT), Stellenbosch University (SU) or the University of the Western Cape (UWC) in South Africa. Students who were pregnant, breastfeeding, elite athletes, following dietary restrictions for a medical condition, or had a disease that may influence their weight, were not eligible for participation. For Phase 1 total of 28 in-depth interviews were conducted with participants with representation of living situation (university residence or private accommodation, those living at home were excluded) and race (black African, mixed ancestry or white) ensured in recruitment. Eighteen of the interviews were fully coded until data saturation was apparent. The additional 10 interviews were coded for new information only. Data analysis was conducted using the audio coding option on Nvivo Version 12. Core belief themes that emerged reflect awareness of recommendations of behaviours of weight gain prevention, awareness of benefits of performance of these behaviours, awareness of consequences of not meeting the requirements as well as non-concern relating to not performing the behaviours. Further beliefs focused mainly on barriers to and facilitators these behaviours. Phase 2 comprised completion of a questionnaire that covered socio-demographics, self-reported weight and height, dietary (including alcohol intake), physical activity, sleep time, body shape satisfaction, eating behaviour, self-esteem, presence of depression/anxiety symptoms and belief statements (derived from Phase 1) by a convenience sample of 168 first year female students from the same three universities to identify weight gain prevention (WGP) belief patterns, associated factors and predictors thereof. Four weight gain belief patterns (WGP Belief Patterns) were extracted using principal component analysis: WGP Belief Pattern 1: Barriers to weight management; WGP Belief Pattern 2: Facilitators for healthy eating and exercise; WGP Belief Pattern 3: Barriers to exercise; WGP Belief Pattern 4: Social barriers to healthy eating. Numerous associations between these belief patterns and dietary patterns including snacking after dinner, problematic eating behaviours (including a higher emotional eating, cognitive restraint and uncontrolled eating), body shape dissatisfaction, attempts to prevent weight gain during the study year, a higher or lower BMI, perception of overweight/obesity as a child/adolescent, higher stress and lower self- esteem were evident. Regression analysis identified identified snacking after dinner, emotional eating, body shape dissatisfaction and attempts to prevent weight gain during the study year as predictors of a higher score, whereas a higher BMI and perception to have been thin as an adolescent as predictors of a lower score on WGB Belief Pattern 1; for WGP Belief Pattern 2: a higher BMI and a higher score for Dietary Pattern 2 (fruits, vegetables and legumes) were identified as predictors of a higher score, and a higher MET-minutes and a higher score for Dietary Pattern 1 (sugary foods/drinks, slap chips, take-outs) as predictors of a lower score; for WGP Belief Pattern 3: a higher BMI and uncontrolled eating were identified as being predictors of a higher score, and a higher self-esteem and weight gain prevention attempts in the study year as predictors of a lower score; and a higher level of body shape dissatisfaction and a higher level of cognitive restraint were identified as being predictors of a higher score, and a higher BMI, perception of being thin as a child, lower stress and a higher self-esteem as predictors of a lower score on WGP belief pattern 4. Overarching conclusions Results and conclusions of the in depth interviews conducted to assess the beliefs of first year female students from three universities in the Western Cape, South Africa, regarding weight gain prevention behaviours and weight related constructs show that a multicultural sample of students held numerous beliefs regarding potential barriers and facilitators to weight gain prevention. Results of the quantitative assessment of these beliefs in a cross-sectional survey conducted amongst the same target group resulted in the extraction of three barrier WGP Belief Patterns, including barriers to weight management per se (feeling stressed/anxious or sad/depressed, mindless eating, being awake at night, experiencing lack of health food options at university, preparing one's own meals, feeling fat, having people around you who do not eat healthy and the difficulty of not overeating were barriers to weight management), barriers to exercise (feeling sad/depressed, feeling stressed/anxious, having poor body shape satisfaction and feeling fat were barriers to exercise) and social barriers to healthy eating (socialising, judgement from peers when making healthy food choices and drinking alcohol were barriers to weight management). Specific predictors of these patterns, namely snacking patterns, cognitive restraint, uncontrolled eating, emotional eating, problematic eating behaviours, body shape dissatisfaction, overweight/obesity as a child/adolescent, higher stress levels and lower self-esteem have typically been reported to be associated with challenges to healthy weight management. A concern is that students who participated in the cross sectional survey were characterized by many of these predictors. Predictors of the single facilitator WGP Belief Pattern (facilitators of healthy eating and exercise: complying with a healthy diet plan, finding enjoyment in healthy eating, preparing vegetables in a tasty way, finding affordable ways to eat healthy, making time in the day for exercise, knowing how to prepare one's own meals, planning meals and snacks ahead and exercising) that was extracted from the quantitative data reflect factors that have typically been reported to be associated with improved weight management (healthy eating and higher physical activity levels), as well as factors that have typically been reported to be associated with weight management challenges (unhealthy eating and a higher BMI). Overarching recommendations Although the associations between the four weight gain prevention belief patterns and weight status of first year female students were not investigated in this study, factors found to be associated with and predictors of the three barrier patterns point to potential risk for the experience of weight gain prevention challenges by first year female students. Although this notion should ideally be confirmed in further research, addressing the focus of the beliefs included in the barrier belief patterns, as well as the characteristics of the students that have been reported to be associated with weight management challenges in the literature in weight gain prevention interventions for first year female students at tertiary institutions is recommended.

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Shainhouse, Leah Esther. "Eating behaviours and adiposity among teen girls: results of the Montreal mother-daughter study of glucose intolerance." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=95247.

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The present study evaluated the behavioural factors associated with overweight among adolescent girls. Behaviours evaluated included social aspects of eating, breakfast skipping, emotional eating, and binge and restraint eating. With increasing prevalence of obesity among youth, more research is required to look at the psychosocial aspects of eating to find effective interventions to promote optimal eating behaviours. Binge eating and infrequent eating of family meals was found to be positively associated with daughters' adiposity and mothers' glucose intolerance during pregnancy. The thesis was novel in that it suggested that behavioural factors contribute to the trans-generational effects of pregnancies affected by glucose intolerance and provided a broader perspective important for formulating intervention strategies aimed at high-risk women and their offspring.
L'étude en question a évalué les facteurs comportementaux associés à la prise de poids chez les jeunes adolescentes. Les comportements incluent tous les aspects sociaux liés à l'alimentation tels que sauter le petit déjeuner, manger par besoin affectif, se goinfrer et se priver volontairement. Avec l'augmentation importante de l'obésité parmi les jeunes, une étude plus approfondie devra se concentrer sur les aspects psychologiques liés à l'alimentation afin d'obtenir des interventions adéquates pour apprendre aux jeunes à bien s'alimenter. On a trouvé que le fait de se goinfrer et le fait de manger avec la famille était associé de façon importante à l'adiposité chez les adolescentes et à l'intolérance de glucose de la mère durant la grossesse. L'idée de cette thèse est révolutionnaire car elle suggère que les facteurs comportementaux contribuent aux effets de la grossesse affecté par l'intolérance de glucose. Cette thèse nous donne une perspective plus large afin d'atteindre des stratégies d'interventions plus effectives auprès des femmes à haut risque ainsi que de leur progéniture.

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Stapleton, Denise R. "Development, implementation and evaluation of a nutrition education and behaviour program for children with cystc fibrosis." Curtin University of Technology, School of Public Health, 2001. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=13047.

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Background: Cystic fibrosis (CF) is a genetically inherited disease which adversely affects the respiratory and gastrointestinal systems. Malnutrition is a major clinical problem in individuals with the disease. Nutritional interventions are warranted as improvements in nutritional status could improve the rates of morbidity and mortality associated with the disease. The review of the literature indicated the need to develop a behavioural-based nutrition prevention program in order for children to achieve CF dietary requirements and appropriate pancreatic enzyme replacement therapy.Methods: The intervention program, Go and Grow with CF, and nutrition and pancreatic enzyme knowledge and self-management questionnaires were developed for children with CF and their carers as part of this thesis. Social learning theory constructs which particularly assist children in achieving desirable behaviours were applied during the development of the Go and Grow with CF program. The program consisted of workshops and a home-based course.Fifty eight children with cystic fibrosis, aged 2 to 11 years, and their carers participated in a clinical trial that was designed to assess the effects of the Go and Grow with CF pilot program on knowledge, self-management, behaviour, dietary intake and body composition, using anthropometry. Process evaluation was conducted on the pilot program and on the clinic-wide implementation of the revised Go and Grow with CF program. The revised program included the Australian Pancreatic Enzyme Replacement Therapy Guidelines and the effects of fat-based dosing were assessed with a cohort of 29 children with CF-related pancreatic insufficiency aged 1 to 13 years.Results: Similar to the process evaluation of the pilot program, 100% of carers who completed the revised home-based course indicated that they would recommend Go and Grow with CF to other families ++
with a child who has CF. The 'objective assessment of knowledge indicated a significant m improvement in' children's knowledge in the short-term. There were no statistically significant improvements in any of the other parameters assessed. The lack of significant improvements in self-management, behaviour, dietary intake and anthropometry may have been because the program had no effect, the parameters assessed or the instruments used (particularly the questionnaires) were not sufficiently sensitive, the sample size (which was determined by the CF population available) was too small or the duration of the intervention and follow-up was too short.Conclusion: Carers' unanimous recommendation of Go and Grow with CF, together with high levels of perceived learning, reported increase in confidence and improvement in children's knowledge in the short-term, indicate the benefits of the program.Although there was no statistically significant improvement in the anthropometric measurements after the intervention, 'the extensive data obtained during this study suggest that measurements of height and weight may underestimate the presence of poor nutritional status. It is likely that comprehensive assessments of body composition of children with CF would be useful in detecting mild degrees of malnutrition and in providing information about the effects of nutritional status on morbidity and mortality associated with the disease.Fat-based pancreatic enzyme replacement therapy dosing warrants further investigation given that parents had a strong preference for this method and that fat absorption remains abnormal in the majority of individuals who have pancreatic insufficiency. Evaluation of all pancreatic enzyme replacement therapy dosing methods are needed and this research suggests that dose should be assessed on a meal and snack basis, rather than just on daily intake, in order ++
for levels of adherence to be examined.The apparent absence of a long-term effect of a single exposure to the program on knowledge suggests that regular, ongoing education and counselling is required by families to reinforce aspects related to the child's current stage of development and disease status.

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Walsh, S. Jane. "Nutritional knowledge and disordered eating attitudes and behaviour in college women." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ31410.pdf.

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31

Sibbald, Angela M. "The effect of body condition and previous nutrition on voluntary intake and feeding behaviour in sheep." Thesis, University of Aberdeen, 1996. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU090361.

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There is evidence from a number of species that body condition or fatness plays a role in the regulation of energy balance, through a direct effect on voluntary food intake (VFI). However, since differences in body condition are frequently confounded with differences in previous nutrition, this study investigated the role of both factors in the control of VFI in sheep. In ewes grazing autumn pastures, there was a negative effect of body condition on VFI, but no independent effect of the previous level of nutrition. However, there was an interaction between the effects of body condition and herbage availability on intake, since VFIs of fat ewes differed with sward height while VFIs of thin ewes did not. The effect of early nutrition on VFI in growing lambs was studied in an experiment where ewes were given either a restricted or adequate level of nutrition in late pregnancy and early lactation. Mean live weight and gut development at weaning were reduced in lambs whose nutrition was restricted during both pregnancy and lactation, but subsequent VFI was not affected. Feeding behaviour was investigated in fat and thin sheep eating a pelleted diet. Thin ewes had higher intakes and spent more time feeding that fat ewes, but the number of meals and rate of ingestion during meals was the same. Both fat and thin ewes increased meal frequency and ingestion rate when food access time was reduced. Differences in VFI were found to persist longer than differences in body condition. Basal plasma insulin concentrations and those measured following an exogenous insulin challenge were both higher in sheep that had remained fat, than in sheep that had previously been thin. This is consistent with the hypothesis that insulin may provide a long-term negative feedback signal to the brain in fat animals, resulting in lower VFIs.

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Rubinfeld, Alissa. "Body composition modulates the effect of a high-fat diet on the learned eating behaviour in male rats." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=121405.

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Meal pattern and eating behaviour in animals and humans are learned over time and involve both innate/biological and environmental factors. It has been shown that animals can learn to anticipate certain outcomes following a behaviour (instrumental conditioning), i.e. anticipatory hunger/satiety. First reported by Jacques le Magnen in 1957, rats learn to eat a smaller amount of food that is followed by a short period of food deprivation than of a food followed specifically by a long fast. High-fat diet (HFD) and obesity directly affect the hippocampus and hence learning and memory processes. Mechanisms are elusive, but key mechanisms proposed are those involving insulin resistance, glucose intolerance and impaired neuronal plasticity. Other crucial factors involved in the relationship between HFD and learning are hormones such as ghrelin and leptin, which both have roles in food intake and energy homeostasis but also in mechanisms of learning and memory because of their ability to cross the blood brain barrier. Anticipatory eating is a hunger-reinforced instrumental behavior that is attenuated by the ingestion of HFD as a maintenance diet. The purpose of the present work was to investigate the results of an experiment investigating the effect of high-fat maintenance diet on food intake, learning of anticipatory eating, and body weight and composition in adult male rats. Thirty Sprague Dawley rats were randomly assigned to either a high-fat maintenance diet or Purina chow and were subjected to an anticipatory learning experimental paradigm for 10 cycles of 2 days including one deprivation period (8 h). HFD rats were grouped based on body weight and fat gain. Results indicated that pre-training and post-training, total body fat and abdominal fat did not differ in high body-weight gainers and low weight gainers, but were significantly greater compared to controls. Because weight gain did not correlate with fat gain, HFD rats were grouped into high weight/high fat gainers, high weight/low fat gainers, low weight/high fat gainers, and low weight/low fat gainers. Learning of anticipatory eating was evident in all rats as but the proportion of first peaks in the earlier cycles was greater in the group maintained on the HFD as a whole, indicating greater speed of learning. However, within the HFD group, those who gained the most amount of fat (g) showed slower learning. Significant diet and cycle effects indicated numerical evidence of reward, with highest reliability in the low-weight, low-fat gainer group. This indicates that a specific type of body composition developed through HFD may influence certain learning processes. The idea that cognitive processes contribute to the control of food intake in rats is also present in human eating behaviour. Anticipatory eating reflects a capacity for managing hunger: that is, humans may learn subconsciously to eat more food before a period of hunger before the conventional time to eat. Impairments in this capacity may contribute to the development of obesity, as an issue primarily of the mental mechanisms organizing eating behaviour.
Les modèles de repas et de comportement alimentaire chez les animaux et les humains sont appris au fil du temps et impliquent des facteurs environnementaux et biologiques/innés. On a montré que les animaux peuvent apprendre à anticiper certains résultats suite à un comportement (conditionnement instrumental), telle la faim/satiété anticipée. Signalé pour la première fois en 1957 par Jacques le Magnen, des rats apprennent à manger une petite quantité de nourriture suivie d'une courte période de privation de nourriture plutôt que d'un aliment suivi d'un long jeûne. Un régime riche en gras (RRG) et l'obésité influent directement l'hippocampe et donc l'apprentissage et les processus de mémoire. Les mécanismes sont insaisissables, mais les principaux mécanismes proposés comprennent l'insulino-résistance, l'intolérance au glucose et la plasticité neuronale réduite. D'autres facteurs essentiels dans le lien entre le RRG et l'apprentissage sont les hormones telles que la ghréline et la leptine, qui jouent un rôle dans l'ingestion alimentaire et l'homéostasie énergétique et aussi dans les mécanismes d'apprentissage et la mémoire compte tenu de leur capacité à traverser la barrière hémato-encéphalique. L'ingestion anticipatoire est un comportement instrumental renforcé par la faim qui est atténué par l'ingestion d'un régime de maintien RRG.. Le but de ce travail était d'analyser les résultats d'une expérience sur les effets d'un régime alimentaire de maintien RRG sur la prise alimentaire, l'apprentissage de l'ingestion alimentaire anticipatoire et le poids et la composition corporelle de rats mâles adultes. Trente rats Sprague Dawley ont été assignés au hasard à un régime de maintien RRG ou au Purina chow et ont été soumis à un modèle expérimental de l'apprentissage anticipée pendant 10 cycles de 2 jours, y compris une période de privation de nourriture (8 h). Les rats nourris avec le RRG on été groupés selon leur gain de poids et de gras corporel. Chez les animaux qui ont gagné beaucoup ou peu de poids corporel, le gras corporal total ainsi que le gras abdominal avant et après l'entraînement de l'apprentissage anticipé n'étaient pas différents; cependant le gain de gras corporel total et le gras abdominal étaient significativement plus élevés que chez les animaux témoins. Comme le gain de poids n'était pas corrélé avec le gain de gras corporel, les animaux nourris avec le RRG ont été subdivisés en quatre sous-catégories comprenant ceux qui : avaient gagné beaucoup de poids mais peu de gras corporel, avaient gagné beaucoup de poids et de gras corporel, ainsi que les rats qui avaient gagné peu de poids mais beaucoup de gras corporel et ceux qui avaient gagné peu de poids et peu de gras corporel. L'apprentissage de l'ingestion anticipatoire a été observé chez tous les animaux, mais la proportion des premiers pics d'ingestion au cours des premiers cycles d'entraînement était plus élevée chez les rats nourris avec le RRG, indiquant un apprentissage plus rapide. Cependant, chez les animaux nourris avec le RRG, ceux qui avaient gagné le plus de gras corporel (g) avaient un apprentissage plus lent. Les effets significatifs du régime alimentaire et du cycle indiquaient une évidence de récompense, avec un effet plus robuste chez les animaux qui avaient gagné le moins de poids et de gras corporel. Cela indique qu'un type spécifique de composition corporelle développé par RRG peut influencer certains processus d'apprentissage. L'idée que les processus cognitifs contribuent au contrôle de la prise alimentaire chez le rat est aussi importante chez l'homme. L'ingestion alimentaire anticipatoire reflète une capacité de gestion de la faim : autrement dit, les humains peuvent apprendre inconsciemment à manger plus de nourriture avant une période de faim, précédant l'heure conventionnelle à manger. Une déficience de cette capacité pourrait contribuer au développement de l'obésité, relevant de mécanismes mentaux organisant le comportement alimentaire.

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Vermeulen, Hester. "A balanced food basket approach to monitor food affordability in South Africa." Thesis, University of Pretoria, 2020. http://hdl.handle.net/2263/73175.

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The public health landscape in South Africa today is characterised by a double-burden of nutritional challenges. Under-nutrition is prevalent, as is evident from the high levels of childhood stunting that are reported. Deficiencies of micro-nutrients such as vitamin A and iron continue to be prevalent in children, females and vulnerable groups. Simultaneously overweight and obesity among adults and children together with an associated increase in the occurrence of non-communicable diseases (NCDs) such as diabetes and cardiovascular disease are increasing steadily to epidemic levels. With approximately 40% of the population living under the International Poverty Line and approximately a quarter of the population not able to obtain enough food to fulfil their daily energy needs, poverty and food insecurity are harsh realities in many South African households. The ability of a household to make healthy food choices is, among other factors, affected by food affordability. Food affordability is determined by household income relative to the cost of purchased food items. In recent years, food affordability in South Africa has been under increased pressure due to the following factors: household income-growth barely keeping track with inflation, rising unemployment, as well as high and ever increasing food prices. The pressure on lower income households is particularly profound, forcing such households to use about a third of total expenditure for food purchases. In this study, a multi-disciplinary approach was used (including principles of nutrition, economics and consumer behaviour sciences) to develop models to measure the cost and affordability of healthy eating in South Africa at a national level and on a socio-economically disaggregated basis. The healthy food basket model was primarily based on the South African Food-based Dietary Guidelines, typical food consumption patterns, household demographics and official urban retail food prices monitored by Statistics South Africa. Food affordability is a major challenge, with 60% of the population unable to afford the Moderate-cost Food Basket which provides greater nutritional diversity. The more economical Thrifty Healthy Food Basket (approximately 30% less expensive) is only affordable to approximately half of the South African population. A four member household earning two minimum wages has to spend a third of total expenditure on food to be able to afford this basket, while the typical food expenditure share of such households is usually lower (approximately 24%), thus confirming the pressure on households to afford healthy eating. In future the models of healthy eating also present possibilities for further expansion (e.g. these models can be refined to study different geographical areas or different household structure typologies). Compared to national nutritional recommendations, the study found that the intakes of whole-grain starch-rich foods, lean meat, fish, eggs, dairy, fruit, vegetables and legumes were low. Inadequate intake was generally more severe among lower income households. Less-affluent households spend a large proportion of their food budget on starch-rich staples, fats / oils and sugar-rich foods, but allocate insufficient resources to animal-source foods, legumes, fruit and vegetables. This study also identified that excessive intakes of refined and processed starch-rich food options, sugar-rich foods and fats / oils were common across all income groups and increased with socio-economic status. These findings confirm the reality of the nutrition transition in South Africa. The contribution of this research to estimate the socio-economically disaggregated consumption of animal-source foods (meat, fish and eggs) and starch-rich foods (maize meal, bread, rice and potatoes), provides valuable insights into differences in food intake across the socio-economic spectrum of South Africa. A complex combination of interventions is required to promote healthy eating patterns in South Africa. In addition to legislative measures (e.g. salt and sugar reduction legislation), consumer education (across the socio-economic spectrum) should focus on science-based practical solutions and provide advice on making healthy and budget-conscious food choices. In addition, it is also important to design and implement policy actions to improve the affordability and availability of healthy food options for the various socio-economic groups, in diverse geographic locations in South Africa. The improvement of food affordability is a key component in moving closer to achieve the Sustainable Development Goal of the United Nations “to end hunger, achieve food security, improve nutrition and promote sustainable agriculture”. Furthermore, improving household food and nutrition security (including addressing issues pertaining to healthy food consumption and affordability), through public and private sector actions, is one of the enabling milestones in the National Development Plan 2030. The monthly costing of the food basket models which were developed in this study and analyses thereof should be used as policy analysis tools to act as a practical, scientific basis for the food security debate in South Africa. These tools are, in fact, already published on a quarterly basis in the public domain. In future the models of healthy eating also present possibilities for further expansion (e.g. these models can be refined to study different geographical areas or different household structure typologies).
Thesis (PhD) - University of Pretoria. 2020.
Financial support received from: * The Bureau for Food and Agricultural Policy (BFAP) * The Department of Science and Technology (DST)/National Research Foundation (NRF) Centre of Excellence (CoE) in Food Security * Agbiz * Red Meat Research and Development South Africa (RMRD SA) * DST/NRF South African Research Chairs Initiative (SARChl) in the National Development Plan Priority Area of Nutrition and Food Security (Unique number: SARCI170808259212) * University of Pretoria
Animal and Wildlife Sciences
PhD Nutrition
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Aljaaly, E. A. M. "Factors affecting nutritional status and eating behaviours of adolescent girls in Saudi Arabia." Thesis, University College London (University of London), 2012. http://discovery.ucl.ac.uk/1370576/.

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The objective of this study is to find out whether a reduction in body weight will reduce health risk factors. To fulfil this objective an intervention study has been conducted among Saudi obese females in the childbearing age (18-45). Interview questionnaires were completed in the intervention and non-intervention group to collect baseline data; the intervention group has undergone a specific diet regimen, physical exercise and nutrition programme. Vital signs including heart rate (PS) and blood pressure (BP) for both groups were recorded at the beginning of the study and after the intervention. Blood biochemical investigations were conducted between both groups at the beginning of the study and after the intervention. Data was analysed using SPSS (version 10). Results showed that baseline data of both intervention and non-intervention group were similar in relation to anthropometrics measurements and BMI. A significant difference was found at day 60 between the intervention and non-intervention group in weight and BMI. Analysis of biochemical variables showed insignificant statistical differences at day -60 in total cholesterol, LDL, and FBS. A statistical difference was found between the intervention and non-intervention group at day-60 in relation to the studied vital signs, systolic and diastolic BP A remarkable change in participants’ knowledge, attitudes, and practices was observed among the intervention group between day-1 and day-60. For example being a yo-yo dieter was reported by 85.2% of the group in day-1 and by 14.81% in day-60 and eating outside was reported by 81.5% in day-1 and by 18.5% in day-60. In conclusions, the use of a combined intervention programme of diet, physical exercise and health education is effective in weight reduction. Regular assessment of vital signs (PS and BP), biochemical laboratory investigations (CHOL, HDL, LDL, TG and FBS) are feasible tools for follow up and early detection of obesity complications. A sustained reduction in body weight is one of the preventive measures to avoid obesity complications. Despite the efforts done during this study, some limitations such as the small sample size and the short duration of intervention can be considered.

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35

Serra, Payà Noemí. "Physical activity/physical exercise, sedentary behaviours and nutrition in children with overweight/obesity and their families. Nereu Programme." Doctoral thesis, Universitat de Lleida, 2014. http://hdl.handle.net/10803/285963.

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La tesi pretén analitzar la relació entre els hàbits d'activitat física/exercici físic, sedentarisme i alimentació en nens amb sobrepès/obesitat. En aquest sentit, s’han redactat 5 articles on s'han estudiat els hàbits actius, les conductes sedentàries i d'alimentació, la resposta a l'exercici físic agut al caminar a diferents pendents a nivell energètic. S'ha portat a terme una primera avaluació del Programa Nereu i finalment s’ha proposat l’avaluació de l'efectivitat del Programa Nereu, com a eina integral vinculada a la salut pública en l'àmbit de l'atenció pediàtrica per al tractament del sobrepès i l'obesitat infantil. En l’article 1.1 i 1.2, es va observar que practicar almenys 3 hores/setmana d’exercici físic es va associar amb menor prevalença de sobrepès i millor condició física. En l’article 2, a mateixes intensitats de treball a nivell energètic i de ventilació els valors eren superiors en els grups de nens/as amb obesitat en relació als de sobrepès. A l’article 3, els nens van augmentar el temps dedicat a activitats de moderada i alta intensitat i es va reduir l'IMC z-score i les conductes sedentàries. Finalment, s'ha proposat un protocol d'estudi com a proposta de futur.
La tesis pretende analizar la relación entre los hábitos de actividad física/ejercicio físico, sedentarismo y alimentación en niños con sobrepeso/obesidad. En este sentido, se han redactado 5 artículos donde se han estudiado los hábitos activos, las conductas sedentarias y de alimentación, la respuesta al ejercicio físico agudo al andar a diferentes pendientes a nivel energético. Se ha llevado a cabo una primera evaluación del Programa Nereu y finalmente se ha propuesto la evaluación de la efectividad del Programa Nereu, como herramienta integral vinculada a la salud pública en el ámbito de la atención pediátrica para el tratamiento del sobrepeso y la obesidad infantil. En el artículo 1.1 y 1.2, se observó que practicar al menos 3 horas/semana de ejercicio físico se asoció con menor prevalencia de sobrepeso y mejor condición física. En el artículo 2, a mismas intensidades de trabajo a nivel energético y ventilación los valores eran superiores en los grupos de niños/as con obesidad en relación a los de sobrepeso. En el artículo 3, los niños aumentaron el tiempo dedicado a actividades de moderada y alta intensidad y se redujo el IMC z-score y las conductas sedentarias. Finalmente, se ha propuesto un protocolo de estudio como propuesta de futuro.
The porpoise of the thesis was to analyze the relation between physical activity/exercise habits, sedentary behavior and foot intake in overweight/obesity children. In this sense, 5 articles have been written. Where, active habits, sedentary behavior or foot intake, the response to acute physical exercise in overweight and obese children when walking at different gradients at an energy expenditure level, an initial assessment of the Nereu Programme have been studied. Finally, a proposal has been put forward on the Nereu Programme as an integral tool linked to public health in the field of pediatric care in the treatment of childhood overweight and obesity. Article 1.1 and 1.2, practice at least 3 hours/week of physical activity was associated with lower prevalence of overweight and better physical condition. In Article 2, same intensities of work on an energetic and ventilation values were higher in the groups of obese children compared to overweight children. Article 3, children increased the time they spent in moderate and high intensity activities and in contrast, BMI z-scores and sedentary behaviors were reduced. Finally, a study protocol has been put forward as a proposal for the future.

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Castaneda, Gameros Diana. "Nutrition and physical activity behaviours in older women ageing in a super-diverse city : a mixed-methods study." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6965/.

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The purpose of the present thesis was driven by the limited existing evidence examining nutritional and physical activity (PA) profiles of older migrant women, and the importance of such studies for the planning and development of appropriate strategies to promote healthy ageing. This thesis adopted a mixed-methods approach to explore current dietary intake, nutrient status, and key factors influencing dietary factors (Chapter 3) of first generation migrant older women from diverse ethnic, socio-economic, and migration backgrounds (n=76). Chapter 4 sought to explore if the reported low energy and low nutrient intakes found in Chapter 3 were associated with frailty. Chapter 5 examined the association between objectively measured PA/ST and frailty, and identified key factors influencing PA amongst a sub-sample of the study sample (n=60). Given that diet and PA are potential mediators to promote healthy ageing in this population, Chapter 6 explored experiences of ageing and how these, in turn, shaped participants’ perceptions of ‘good’ old age as well as nutrition and physical activity behaviours. The present thesis provided an opportunity to better understand the dietary and PA profiles of first generation migrant older women and how they relate to frailty and ageing within the contemporary super-diverse UK context.

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Rioja-Lang, Fiona C. "The effects of feed area design on the social behaviour of dairy cattle." Thesis, University of Edinburgh, 2009. http://hdl.handle.net/1842/3516.

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The overall objective of this thesis was to assess the effect of feed area design including feeding space availability, barrier type and stocking density, on the feeding behaviour of dairy cows. Feed intake in dairy cows is directly related to milk production, thus a good food supply is extremely important to the modern, high producing dairy cow. Intake is critical for improving milk production, health, body condition and the welfare of the animals. Feeding designs can have a major effect on behaviour and feed intake, therefore it is an important consideration when housing cattle and other livestock. The effect of altering the amount of space allowance available at the feed-face highlighted a significant effect on feeding patterns. As the space allowance increased the number of feeding bouts also increased (P<0.001) and length of bouts decreased (P<0.05). However, when provided with extra space at the feed-face, cows did not increase their feed intake as hypothesised, possibly as a result of the differences between individual animals being masked by an overall group effect. The number of aggressive interactions decreased as the space allowance increased (P<0.001) and furthermore, the number of times individuals were displaced from the feeding area also decreased as the space allowance increased (P<0.05). Subsequently, preference tests were used as a behavioural tool to determine how individual cows perceive their feeding environment with specific emphasis on understanding what difficulties low ranking animals face at the feed-face. Subordinate cows showed a significant preference for feeding alone rather than next to a dominant when they were offered high quality feed on both sides of a Y-maze test (P<0.001). When “asked” to trade-off between feed quality and proximity to a dominant cow, subordinate cows chose to feed alone on low quality food. A follow-on experiment using the same methodology was undertaken and aimed to identify the space allowances at which cows would not trade-off food quality. Four different space allowances were tested. At the two smaller space allowances, cows preferred to feed alone and for the two larger space allowances, cows had no significant preferences. The feed barrier has been shown to have a major effect on feeding and social behaviour of group housed dairy cows. A barrier design that provides some sort of separation between cows has also been shown to reduce competition. The aim of the final study was to determine if a feed barrier which obscured the cows’ visual field whilst feeding would increase vigilance behaviour and alter normal feeding behaviour, particularly for subordinates. Two different types of feed barrier were tested at four different stocking densities. The average daily feeding time was higher when cows were fed using a conventional headlock system compared to an electronic feeding system (P<0.05). All groups of cows displayed vigilance scans, however, neither type of barrier, feed space allowance, or dominance rank had an effect on the frequency of scans. These results indicate that neither feeder design nor stocking rate affect vigilance in dairy cows, at least over the treatment conditions assessed in the current study. The results of this research illustrate that to achieve the maximum levels of feeding behaviour and a reduction of aggressive behaviour, the cows’ environment must be such that it provides sufficient space and feed barrier design which will allow normal social behaviour. Over-stocking at the feed-face should be avoided to reduce competition. Future research should consider the long term effects of over stocking and competition on dry matter intake (DMI), milk production and health.

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Ockenden, Holly. "Women’s Knowledge, Behaviours and Dietary Patterns Contributing to Excess Weight Gain In Pregnancy." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34261.

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Background: The number of women considered overweight (OW) and obese (OB) in Canada has steadily increased over the past thirty years. In addition, there has also been a rise in the amount of weight women gain during pregnancy. Many adverse pregnancy outcomes are associated with maternal overweight, obesity and/or excessive gestational weight gain (GWG), which have been widely studied and reported. In 2009, the Institute of Medicine (IOM) developed healthy GWG guidelines, based on trial and observational evidence, that provide BMI-related weight gain targets. This evidence has shown that weight gain within the guidelines results in better health outcomes for the mother and baby, during pregnancy, as well as postpartum. Objectives: (1) To address diet quality and patterns using data collected from the Maternal Obesity Management (MOM) Intervention Trial, and (2) Develop and validate a comprehensive web-based questionnaire that can be used in a future study to examine women’s knowledge of the IOM GWG guidelines, dietary recommendations, physical activity (PA) practices, as well as other lifestyle habits. Methods: (1) Exploratory pooled analysis of dietary data from Maternal Obesity Management (MOM) trial - To identify diet quality of women who exceeded (EX) versus did not exceed (NEX) the 2009 IOM pregnancy weight gain targets. Participants (n=50) completed 7-day food records at 3 points during pregnancy (baseline (V1: 12-20 weeks), between 26-28 weeks (V2) and between, 36-40 weeks (V3). Data were analyzed in ESHA Food Processor Program and SPSS (version 13) to see if there was any difference found in diet between EX and NEX women. (2) Development and validation of a comprehensive maternal health questionnaire aimed to establish gaps in women’s behaviours and perceptions of the IOM GWG guidelines - An expert panel was consulted in the development of questionnaire constructs and items to gain content validity of the questionnaire. After multiple phases of questionnaire development and revisions, a 14-day test re-test validation pilot study was conducted to establish test re-test validity. Results: (1) In the EX and NEX analysis, significant decreases were found in total energy intake, including fat and protein, across pregnancy in the NEX GWG group. Significant group-by-time interaction was also found for energy intake and protein. (2) Most constructs included in the electronic maternal (EMat) Health questionnaire all proved to have sufficient test re-test validity via correlation analysis. Conclusion: In order to address the knowledge gaps regarding excess weight and changes in dietary habits during pregnancy, it is beneficial to explore pregnant women's knowledge and behaviours regarding these issues and collect information on what women report as barriers and facilitators to gestational weight management. The conclusions drawn from both of these studies may inform future interventions, as well as indicate where further education strategies are needed.

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39

Fitzpatrick, Katherine. "Foraging and menstruation in the Hadza of Tanzania." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/275062.

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The Hadza, residing near Lake Eyasi in northern Tanzania, represent one of the last remaining hunter-gatherer populations. Inhabiting the same area as our hominin ancestors and exploiting very similar resources, the Hadza maintain a foraging lifestyle characterised by a sexual division of labour. Studies of their foraging and food sharing habits serve as the foundation to numerous hypotheses of human behaviour and evolution. Data from the Hadza have featured heavily in debates on the sexual division of labour. These debates focus predominantly on men’s foraging, including how and why men provision. Women’s provisioning, on the other hand, is seldom explicitly examined and is often presumed to be constrained by reproduction. This thesis contributes to debates on the sexual division of labour by investigating how a woman’s reproductive status affects her foraging behaviours. Observational data on women’s foraging are investigated from 263 person/day follows (1,307 hours total) across 10 camps between 2004 and 2006. These data present the first quantitative documentation of forager women’s eating and sharing outside of camp. Interview data on women’s reproductive timeline are also analysed from in-depth interviews with 58 women from 9 camps in 2015. Spanning from menarche to menopause, these data offer the first quantitative and qualitative documentation of forager women’s menstruation. The results demonstrate that Hadza women eat and share over 800 kilocalories outside of camp per person/day. They regularly give and receive food, including gifts of honey from men. Breastfeeding women are more likely to give gifts and give more gifts than non-breastfeeding women. When they bring nurslings with them outside of camp, they forage less kilocalories per hour. Post-menopausal women eat less relative to what they forage, are less likely to receive gifts, rest less and forage more than pre-menopausal women. Although Hadza women describe their foraging workload as most difficult during late pregnancy, no significant differences in eating, sharing, resting or foraging are observed for pregnant women. Menstrual data from the Hadza reveal that menstruation is not only culturally relevant to the sexual division of labour, but it is also biologically relevant to current understandings of fertility. The majority (60%) of Hadza women report not doing their normal work during menstruation. They also report menstruation-related taboos for berry picking. The thesis presents an in-depth review of women’s menstruation, from the duration of menses to the menstrual cleaning process.

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Bruk, Lila. "Aspects of body image perception of preadolescent girls of different ethnic groups in Northeastern Johannesburg, South Africa." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5446.

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Thesis (MNutr (Interdisciplinary Health Sciences. Human Nutrition))--University of Stellenbosch, 2010.
ENGLISH ABSTRACT: Background: Poor body image perception and body dissatisfaction has been found to be a risk factor for eating disorders. Studies have found that signs of distorted body image perception and body dissatisfaction can be detected in children as young as 8 or 9 years old. Aim: The current study served to assess the extent of this problem in Northeastern Johannesburg, South Africa, in order to allow for the necessary intervention steps (e.g. development of school-based programmes) to deal with this problem to be put in place. Method: The study was a cross-sectional analytical study with a descriptive component. Two hundred and four girls (81.37% Black, 15.20% White and 3.43% Coloured or Indian) aged between 96 and 119 months in primary schools in Northeastern Johannesburg were selected for this study using systematic random sampling. They were required to complete a questionnaire about their body image perception and weight control behaviours, as well as undergo anthropometric measurements (i.e. weight and height). Results: This study found that the subjects placed much importance on being thin, with subjects stating that they thought if a girl was thin she would be more popular (63.96%), have better self esteem (69.63%), be more attractive (69.11%), be more feminine (73.80%) and be healthier (66.84%). When asked to identify the girl from a silhouette drawing that most resembled themselves, 45.00% of the subjects were able to accurately identify which girl’s size most resembled their own, whereas 48.50% saw themselves as thinner than they are and 6.50% saw themselves as fatter than they are. In addition, the majority of subjects (69.61%) said that they were very happy with their weight and the majority (74.88%) classified it as “just right.” However, despite these findings, there was still significant body dissatisfaction evident in the group with 50.25% of the subjects wanting to be thinner, 28.57% wanting to be fatter and only 21.18% not wanting to be thinner or fatter than they currently are. Of the subjects participating in the study, 50.98% had tried to lose weight in the past and 28.71% had tried to gain weight. Also, various factors (i.e. media, cultural, family and peer influences), were shown to have a significant influence on the subjects’ body image perception. Other factors such as socioeconomic status and physical activity level had no significant link with the subjects’ body image perception. Conclusion: There is a significant problem with poor body image perception and resultant weight control behaviours in this age group. Clearly, there is a need for body image improvement programmes to be put in place in primary schools so as to prevent preadolescent girls from moving towards a lifetime of suffering with body dissatisfaction or, even worse, developing a life-threatening eating disorder.
AFRIKAANSE OPSOMMING: Agtergrond: ’n Swak liggaamsbeeld en liggaamsontevredenheid is bekende risikofaktore vir die ontwikkeling van eetsteurnisse. Volgens studies kan tekens van ’n verwronge liggaamsbeeld en liggaamsontevredenheid reeds by jong kinders, van 8 of 9 jaar, bespeur word. Doel: Hierdie studie het gepoog om die omvang van dié probleem in die noordooste van Johannesburg, Suid-Afrika, te bepaal ten einde die nodige intervensiemaatreëls te tref (byvoorbeeld om skoolgebaseerde programme te ontwikkel) om die probleem die hoof te bied. Metode: Die studie is ’n dwarssnit analitiese studie met ’n beskrywende komponent. Met behulp van sistematiese, ewekansige steekproefneming is 204 laerskoolmeisies (81.37% Swart, 15.20% Wit en 3.43% Bruin of Indiër) van tussen 96 en 119 maande uit die noordooste van Johannesburg as proefpersone vir die studie gekies. Die meisies moes elk ’n vraelys oor hul liggaamsbeeld en gewigsbeheergedrag invul sowel as antropometriese meting van gewig en lengte ondergaan. Resultate: Die studie het gevind dat die proefpersone baie waarde daaraan heg om maer te wees. Hulle reken onder meer dat, indien ’n meisie maer is, sy waarskynlik gewilder sal wees (63.96%), ’n beter selfbeeld sal hê (69.63%), aantrekliker sal wees (69.11%), vrouliker (73.80%) en gesonder sal wees (66.84%). Toe hulle op ’n profielskets ’n meisie moes uitwys na wie hulle dink hulle die meeste lyk, kon 45.00% van die proefpersone akkuraat uitwys watter meisie se grootte die meeste met hulle s’n ooreenstem, terwyl 48.50% hulself as maerder en 6.50% hulself as vetter beskou het as wat hulle werklik is. Die meerderheid van die proefpersone (69.61%) was oënskynlik gelukkig met hul gewig en die meeste (74.88%) het hul gewig as “net reg” beskryf. Tog, ondanks dié bevindinge, was daar steeds beduidende liggaamsontevredenheid by die groep: 50.25% van die subjekte wil maerder wees, 28.57% vetter en slegs 21.18% nie maerder óf vetter as wat hulle tans is nie. Van die studiedeelnemers het 50.98% al voorheen probeer gewig verloor, terwyl 28.71% al probeer gewig aansit het. Verskeie faktore (soos media-, kulturele, gesins- en portuurinvloede) blyk ook ’n beduidende impak op die proefpersone se liggaamsbeeld te hê. Daarenteen toon ander faktore, soos sosio-ekonomiese status en vlak van fisieke aktiwiteit, geen wesenlike verband met die proefpersone se liggaamsbeeld nie. Gevolgtrekking: Hierdie ouderdomsgroep blyk ’n beduidende probleem met ’n gebrekkige liggaamsbeeld en gevolglike gewigsbeheergedrag te hê. Daar is duidelik ’n behoefte aan programme om laerskoolmeisies se liggaamsbeeld te verbeter ten einde te voorkom dat preadolessente meisies weens liggaamsontevredenheid ’n leeftyd van swaarkry tegemoetgaan of, selfs erger, ’n lewensgevaarlike eetsteurnis ontwikkel.

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41

Brown, Melissa. "Assessment of nutritional knowledge, behaviour and BMI of Primary Care-Givers with children under the age of 18 years." Thesis, University of the Western Cape, 2011. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_8415_1366189949.

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Research suggests that parents&rsquo
feeding practices play a critical role in the development of children&rsquo
s tastes, eating habits, nutrition and eventual weight status. Thus if parental feeding practices play such a critical role, the question arises as to whether there is a difference in parental feeding practices that determine different developments in children&rsquo
s nutritional habits. Furthermore, feeding practices are possibly based on the nutritional knowledge of parents. The aim of this study was to assess the Body Mass Index (BMI), nutritional knowledge and behaviour of primary care-givers. This study followed the quantitative research paradigm. A sample of 147 staff members, who were primary care- givers of children at a University in the Western Cape was self-selected to participate in the study. Only primary care-givers of children were invited to participate. The primary care-givers were asked to complete two online questionnaires, the Comprehensive Child Feeding Questionnaire (CFPQ) developed by Musher-E-Eisenman and Holub (2007), and the General Nutritional Knowledge Questionnaire (GNKQ) for adults. Data analysis was done by means of the Statistical Package for Social Sciences (SPSS17). Results indicated that the majority of participants were overweight (46% of the participants). Primary care-givers across all body mass index groups did not lack nutritional knowledge but variations in behaviour were found with regard to feeding practices. However similarities were found in the BMI categories in the areas of teaching about nutrition, pressure to eat at meal times
and encouraging balance and variety.

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42

Movva, Leela R. "Associations between health behaviours, metabolic control, serum TNF-ALPHA and periodontal status in Chinese type-2 diabetics." Thesis, Click to view the E-thesis via HKUTO, 2004. http://sunzi.lib.hku.hk/hkuto/record/B31954376.

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Leske, Stuart G. "Dieting and non-dieting: Socio-cognitive determinants and associations with nutrition and health status indicators." Thesis, Queensland University of Technology, 2015. https://eprints.qut.edu.au/89658/14/89658%28thesis%29.pdf.

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Dieting and non-dieting are two contrasting approaches to the management of overweight/obesity, but less is known about why people follow non-dieting approaches and how these approaches are associated with health and nutrition status indicators. This thesis enables a greater understanding of why dieting and non-dieting approaches are adopted and provides insight into whether one approach is more favourably associated with nutrition and health status indicators. The findings of this thesis will be useful for clinicians who wish to encourage dieting or non-dieting approaches in their clients and for researchers wishing to understand how best to address overweight and obesity.

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Patch, Craig Stewart. "An analysis of the potential role of functional foods in the primary prevention of coronary heart disease." Access electronically, 2005. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20050914.155815/index.html.

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45

Asmall, Taherah. "The adverse health effects associated with drought in Africa: working towards developing a vulnerability index." Master's thesis, Faculty of Health Sciences, 2020. http://hdl.handle.net/11427/32447.

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Africa is uniquely vulnerable to the occurrence of drought. A rise in temperatures over Southern Africa occurs at almost twice that of the global rate. South Africa has begun to experience an increase in the frequency of drought, particularly in the Western and Eastern Cape. Droughts are associated with several health effects. The direct and indirect risks of climate change to human health have become a global concern. The most recent systematic review available on the adverse health effects associated with drought was published in 2013, and as such, an up-to-date review focusing on Africa is needed to inform a Cape Town specific health vulnerability index. This study aims to provide a review of available research exploring the association between drought and adverse health effects in Africa. The rationale for this study is to provide a solid research foundation from which a drought-specific health vulnerability index for Cape Town can be developed. A narrative review of original studies and published reviews was conducted. An extensive electronic literature search was performed using a combination of keywords, Medical Subject Heading (MeSH) terms and free text words. The Critical Appraisal Toolkit (CAT) was used to assess the quality of included studies. A total of 1922 publications were identified, of which twenty-four articles were included in this review. The main drought-related health effects that emerged were divided into 4 main categories: (1) drought and nutritional health including malnutrition, poor childhood health outcomes (wasting, stunting and underweight), mortality, anaemia, and nutritionrelated disability; (2) drought and food consumption including micronutrient deficiencies and motor neuron diseases; (3) drought and water-borne, water-washed and water- related diseases including cholera outbreaks, diarrhoeal diseases, protozoa parasite transmission, scabies outbreaks, trachoma, vector-borne disease outbreaks and malaria-related mortality; and (4) drought and health behaviours including health perceptions and health-seeking behaviours, HIV prevention and care behaviours and family planning practices. There was generally limited evidence in all health categories with several limitations. These limitations include studies with methodological weaknesses (e.g. a lack of comparison to a non-drought period), the singularity of published studies on health effects associated with drought and studies which did not account for potential confounders. While the evidence from the included studies is limited, this study highlights gaps in literature to encourage further research into understanding the direct and indirect impacts of drought on health, particularly in vulnerable groups. Furthermore, the results of this study emphasized the contextual factors which lower an individual's adaptive capacity and identified key indicators that can be used to begin to develop a broad framework for a vulnerability index

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Notelovitz, Talia. "Abnormal eating attitudes and weight loss behaviours of girls attending a "traditional" Jewish high school in Johannesburg : an examination of teachers' awareness." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6736.

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Thesis (MNutr)--University of Stellenbosch, 2011.
ENGLISH ABSTRACT: Background: Eating disorders are an important cause of morbidity and mortality in adolescent and young adult women. There is some evidence that Eating disorders may be more common in Jewish females than in their non-Jewish counterparts. Individuals with abnormal attitudes as defined by the Eating Attitudes Test (26-Item version) (EAT-26) are at increased risk of developing an eating disorder. School teachers are required to take an active role in the currently favoured ecological approach to the prevention of eating disorders. Objectives: The current study sought to determine the prevalence of abnormal eating attitudes and weight loss behaviours in a Jewish female adolescent sample and to investigate school teachers’ awareness of these factors and their attitudes towards a school programme to address these. Methods: A cross-sectional study of girls in grades 8 to 11 and teachers of both genders was undertaken at a “traditional” Jewish high school in Johannesburg, South Africa. A questionnaire consisting of the EAT-26 and a modified section of the United States Youth Risk Behaviour Survey (YRBS) was completed by pupils. A questionnaire developed by the researcher for the study was completed by teachers. Results: Two hundred and twenty pupils (response rate 84.3%) and 38 teachers (52.1%) participated. Twenty percent of pupils (n=43) had EAT-26 scores greater than or equal to 20 and 30.2% were found to require clinical evaluation for a potential eating disorder Thirty two point seven percent (n=72) of girls considered themselves to be overweight. Sixty four percent (n=139) were trying to lose weight at the time of the study and 19.1% (n=42) had engaged in one or more extreme methods of weight loss (fasting, purging or non-prescribed medication) in the past 12 months. Most teachers (81.6%, n=29) underestimated the proportion of girls requiring clinical evaluation and 71.1% (n=27) underestimated the extent of current weight loss attempts. Almost all (97.3%, n=37) the teachers recognised the need to address disordered eating attitudes and patterns in the school but only 34.2% (n=13) viewed the school as the appropriate place, would be prepared to participate and would give up class time. Conclusions: This is the first study to document the presence of abnormal eating attitudes among Jewish adolescent females in South Africa. The prevalence fell within the upper end of the range of rates reported in studies of adolescent girls in South Africa and abroad. Dieting and attempts at weight loss are common in this population and are also in keeping with the findings from international studies. This is the first study to measure teachers’ awareness of the eating attitudes and weight loss behaviours of girls attending the school at which they teach. The teachers participating in this study were not fully aware of the extent to which eating-related issues affect female pupils. Over and above this, there appears to be a resistance to facilitating and participating in a school programme addressing these issues. A qualitative exploration of this could yield valuable insights.
AFRIKAANSE OPSOMMING: Agtergrond: Eetstoornisse is 'n belangrike oorsaak van morbiditeit en mortaliteit in adolessente en jong volwasse vroue. Daar is bewyse dat Eetstoornisse meer algemeen mag voorkom in Joodse vroue vergeleke met hul nie-Joodse eweknieë. Individue met 'n abnormale houding soos gedefinieer deur die Eet-Houding-Toets (“Eating Attitudes Test”) (26-punt weergawe) (EAT-26) het 'n verhoogde risiko om 'n eetstoornis te ontwikkel. Daar word van onderwysers verwag om 'n aktiewe rol te speel in die ekologiese benadering om eetstoornisse te voorkom, wat tans voorkeur geniet. Doelstellings: Die huidige studie het gepoog om die voorkoms van abnormale houding en gedrag ten opsigte van eet en gewigsverlies in 'n steekproef van Joodse vroulike adolessente te bepaal, asook om ondersoek in te stel of onderwysers bewus is van hierdie faktore en hul houding teenoor 'n skoolprogram wat dit aanspreek. Metodes: 'n Dwarssnit studie van meisies in graad 8 tot 11 en onderwysers van beide geslagte was uitgevoer by 'n "tradisionele" Joodse hoërskool in Johannesburg, Suid-Afrika. 'n Vraelys bestaande uit die EAT-26 en 'n aangepasde afdeling van die “United States Youth Risk Behaviour Survey (YRBS)” is voltooi deur studente. Onderwysers het 'n vraelys voltooi wat vir die studie ontwikkel is deur die navorser. Resultate: Tweehonderd-en-twintig leerlinge (responskoers 84.3%) en 38 onderwysers (52.1%) het deelgeneem. Twintig persent van leerlinge (n=43) het EAT-26 tellings groter as of gelyk aan 20 gehad en daar was bevind dat 30.2% kliniese evaluering vir 'n potensiële eetstoornis benodig. Twee-en-dertig punt sewe persent (n=72) van meisies het hulself as oorgewig beskou. Vier-ensestig persent (n=139) het probeer om gewig te verloor ten tye van die studie en 19.1% (n=42) het betrokke geraak by een of meer ekstreme metodes van gewigsverlies (vas, purgasie of nievoorskrif medikasie) in die afgelope 12 maande. Meeste onderwysers (81.6%, n=29) onderskat die proporsie van meisies wat kliniese evaluasie benodig en 71.1% (n=27) onderskat die omvang van huidige gewigsverlies-pogings. Byna alle (97.3%, n=37) onderwysers het die behoefte erken dat versteurde houdings en eetpatrone aangespreek moet word, maar slegs 34,2% (n=13) beskou die skool as die geskikte plek daarvoor en sal bereid wees om deel te neem en klastyd af te staan. Gevolgtrekkings: Die teenwoordigheid van abnormale houding teenoor eet onder Joodse vroulike adolessente in Suid-Afrika word vir die eerste keer in hierdie studie gedokumenteer. Die prevalensie val binne die boonste deel van die reikwydte van koerse wat gerapporteer is in studies oor adolessente meisies in Suid-Afrika en die buiteland. Dieet en pogings tot gewigsverlies is algemeen in hierdie populasie en stem ook ooreen met die bevindinge van internasionale studies. Dit is die eerste studie wat onderwysers se bewustheid meet ten opsigte van die eethoudings en gewigsverlies-gedrag van meisies wat skool bywoon waar hul onderrig gee. Die onderwysers wat deelgeneem het aan hierdie studie was nie ten volle bewus van die mate waartoe eet-verwante kwessies vroulike leerlinge affekteer nie. Boonop blyk daar weerstand te wees teenoor die fasilitering van, en deelname aan 'n skoolprogram wat hierdie kwessies aanspreek. Verdere kwalitatiewe ondersoeke hiervan kan moontlik waardevolle insig bied.

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Pernal, Stephen F. "The influence of pollen quality and pollen-based cues on the nutrition and foraging behaviour of honey bees, Apis mellifera L." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ57514.pdf.

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Logan, Murray. "Nutritional stresses and the feeding behaviour and activity patterns of free-ranging koalas (Phascolarctos cinereus : Goldfuss)." Monash University, School of Biological Sciences, 2003. http://arrow.monash.edu.au/hdl/1959.1/9593.

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Maloney, Kelly Veronica. "Awareness, reported behaviour, and dietary intake of fat and fiber as risk factors for cardiovascular disease." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0020/MQ54935.pdf.

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Sweet, Wendy Gaylene. "Personal Trainers: Motivating and Moderating Client Exercise Behaviour." The University of Waikato, 2008. http://hdl.handle.net/10289/2271.

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Abstract:

First established in the 1990's, the personal training industry in New Zealand has experienced unprecedented growth. Over 80% of New Zealand health clubs market the services of Personal Trainers and there are now over 1500 registered Personal Trainers working in a range of settings. Their primary professional role is one whereby they promote and support individuals to attain desired 'results' in relation to their physical fitness and particularly, to adopt a more physically active lifestyle. But despite the growth of this industry, little is known about how Personal Trainers actually go about supporting the clients who purchase their service to find a way into, as well as stay committed to a physically activity lifestyle. To date there has been no research in New Zealand exploring how Personal Trainers operate as agents of behaviour change. Furthermore, there appears only anecdotal evidence about how the intervention strategies used by Personal Trainers reflect those recommended in the 'behaviour-change' literature. This thesis focused on the daily, working experiences of ten Personal Trainers. Inspired by the interpretive paradigm, in-depth interviews were conducted and analysis of the data, guided by the tenets of grounded theory, allowed the story about the way each participant went about her/his work to emerge. The study highlights a variety of issues that these Trainers recognise as significantly influencing their ability to succeed in an increasingly competitive and demanding business. Specific reference was also given to the behavioural intervention strategies that each participant believed were the most beneficial in nurturing client lifestyle behaviour-change. The study outcomes reveal that although the Trainers worked independently of each other there was considerable commonality in the approaches they had developed. All agreed on the importance of presenting themselves as confident, competent professionals who modelled healthy life-styles to their clients. Some of the strategies they used were similar in some regards to those described in the intervention literature, but others were not. A salient point made by all was that, despite some of their practices lying outside the professional boundaries defined by their professional registration organisation, the provision of services to clients often went beyond the 'physical'. Nutritional counselling especially had become an integral part of the service they provided for clients and was, in fact, an area which clients 'expected' them to be experts in. Each acknowledged the challenge of devising strategies to keep their clients committed, motivated and returning to them. The study highlighted two distinct phases of intervention as the Trainers used different motivational approaches to firstly, initiate change and then maintain their client's progress. As the clients began to see results all of the trainers agreed that their relationship with their long-term clients became more collegial. As time progressed, and in order to facilitate and foster client belief in the inherent value of physical activity 'for life', the Trainers became their client's Life Coach. The Personal Trainers in this study described a multitude of roles that each believed they needed to fulfil in order that they achieved on-going success as a Trainer. This emphasises the need for a more expansive education programme for Personal Trainers. Programmes which move beyond a traditional fitness discourse and better reflect the complexities of what it truly means to be a one-on-one 'Trainer'.

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Dissertations / Theses on the topic 'Behavioural nutrition'

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