Journal articles on the topic 'Hydration fluid'
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1
Kurniawati, Fitri, Laras Sitoayu, Vitria Melani, Rachmanida Nuzrina, and Yulia Wahyuni. "HUBUNGAN PENGETAHUAN, KONSUMSI CAIRAN DAN STATUS GIZI DENGAN STATUS HIDRASI PADA KURIR EKSPEDISI." JURNAL RISET GIZI 9, no. 1 (June 1, 2021): 46–52. http://dx.doi.org/10.31983/jrg.v9i1.6428.
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Background: Hydration results from body fluids balance, while dehydration results from body fluids imbalance. Dehydration can result from losing too much water, not drinking enough or both of these things. There are certain job who has special needs for fluids especially who works in hot environments.Objective: To determine the relationship between knowledge, fluid intake and nutritional status with hydration status in expedition couriers.Methods: A cross-sectional design with 44 expedition couriers as the research subject. Knowledge of fluids were obtained using a questionnaire, fluid intake were obtained by interview using repeated 24-h food recall, nutritional status were obtained by using BMI and the hydration status were obtained by urine specific gravity using urinalysis reagent strips. The data was processed and analyzed using Pearson correlation test.Results: Most of the respondents had sufficient knowledge (59.1%). The average fluid intake of the respondents were 2562 mL. Most of the respondents had normal nutritional status (45.4%). Almost half of respondents has pre-dehydration (45.5%). There were arelationship between knowledge of fluids and hydration status (p=0,0001, r=-0,514), also between fluid intake and hydration status (p=0,0001, r=-0,685). There is no relationship between nutritional status and hydration status (p=0,337, r=0,148).Conclusion: Fluid intake and hydration status on expedition couriers are still not as expected, even though expedition couriers have sufficient knowledge.
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Cao, Han, Zheng Zhang, Ting Bao, Pinghe Sun, Tianyi Wang, and Qiang Gao. "Experimental Investigation of the Effects of Drilling Fluid Activity on the Hydration Behavior of Shale Reservoirs in Northwestern Hunan, China." Energies 12, no. 16 (August 16, 2019): 3151. http://dx.doi.org/10.3390/en12163151.
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The interaction between drilling fluid and shale has a significant impact on wellbore stability during shale oil and gas drilling operations. This paper investigates the effects of the drilling fluid activity on the surface and osmotic hydration characteristics of shale. Experiments were conducted to measure the influence of drilling fluid activity on surface wettability by monitoring the evolution of fluid-shale contact angles. The relationship between drilling fluid activity and shale swelling ratio was determined to investigate the osmotic hydration behavior. The results indicate that, with increasing drilling fluid activity, the fluid–shale contact angles gradually increase—the higher the activity, the faster the adsorption rate; and the stronger the inhibition ability, the weaker the surface hydration action. The surface adsorption rate of the shale with a KCl drilling fluid was found to be the highest. Regarding the osmotic hydration action on the shale, the negative extreme swelling ratio (b) of the shale was found to be: bKCl < bCTAB < bSDBS. Moreover, based on the relationship between the shale swelling ratio and drilling fluid activity, shale hydration can be divided into complete dehydration, weak dehydration, surface hydration, and osmotic hydration, which contributes to the choice of drilling fluids to improve wellbore stability.
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Suppiah, Haresh T., Ee Ling Ng, Jericho Wee, Bernadette Cherianne Taim, Minh Huynh, Paul B. Gastin, Michael Chia, Chee Yong Low, and Jason K. W. Lee. "Hydration Status and Fluid Replacement Strategies of High-Performance Adolescent Athletes: An Application of Machine Learning to Distinguish Hydration Characteristics." Nutrients 13, no. 11 (November 15, 2021): 4073. http://dx.doi.org/10.3390/nu13114073.
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There are limited data on the fluid balance characteristics and fluid replenishment behaviors of high-performance adolescent athletes. The heterogeneity of hydration status and practices of adolescent athletes warrant efficient approaches to individualizing hydration strategies. This study aimed to evaluate and characterize the hydration status and fluid balance characteristics of high-performance adolescent athletes and examine the differences in fluid consumption behaviors during training. In total, 105 high-performance adolescent athletes (male: 66, female: 39; age 14.1 ± 1.0 y) across 11 sports had their hydration status assessed on three separate occasions—upon rising and before a low and a high-intensity training session (pre-training). The results showed that 20–44% of athletes were identified as hypohydrated, with 21–44% and 15–34% of athletes commencing low- and high-intensity training in a hypohydrated state, respectively. Linear mixed model (LMM) analyses revealed that athletes who were hypohydrated consumed more fluid (F (1.183.85)) = 5.91, (p = 0.016). Additional K-means cluster analyses performed highlighted three clusters: “Heavy sweaters with sufficient compensatory hydration habits,” “Heavy sweaters with insufficient compensatory hydration habits” and “Light sweaters with sufficient compensatory hydration habits”. Our results highlight that high-performance adolescent athletes with ad libitum drinking have compensatory mechanisms to replenish fluids lost from training. The approach to distinguish athletes by hydration characteristics could assist practitioners in prioritizing future hydration intervention protocols.
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Pustisari, Ferlica, Laras Sitoayu, Rachmanida Nuzrina, Dudung Angkasa, and Nazhif Gifari. "Hubungan Aktivitas Fisik, Konsumsi Cairan, Status Gizi Dan Status Hidrasi Pada Pekerja Proyek." Jurnal Gizi 9, no. 2 (November 6, 2020): 215. http://dx.doi.org/10.26714/jg.9.2.2020.215-223.
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Hydration status is a condition that describes the amount of fluid in the body. If the intake of fluids from food and drinks in the project workers is not met, then it has an opportunity to cause dehydration. Declining productivity in workers can be caused by dehydration. Objectives this study to determine the relationship between physical activity, fluid intake, nutritional status and hydration status in project workers. An observational study with a cross sectional approach, the study population was project workers. The number of samples in this study were 53 respondents. The study was conducted by direct interview, measurement of body weight,height, body fat percent and urine specific gravity. Data analysis in this study used the Spearman correlation test. The age of workers ranged from 17-52 years. The average BMI score was22,417 kg / m2.The average value of PAL 2.37. The average fluid intake was 2018.30 ml. Moyority of workers have hydration status in severely dehydrated group (79.2%.) There is a relationship between physical activity (0.026), fluid intake and hydration status (0.001) but there is no relationship between nutritional status and hydration status (0.789). Keywords: fluid intake; nutritional status; physical activity; hydration status.
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Aggarwal, Pragati, and Sharda Patra. "Correction with oral hydration improves maternal and perinatal outcome in women with third trimester isolated oligohydramnios." International Journal of Reproduction, Contraception, Obstetrics and Gynecology 7, no. 2 (January 23, 2018): 671. http://dx.doi.org/10.18203/2320-1770.ijrcog20180192.
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Background: Oligohydramnios is related to serious maternal and fetal complications. In case of isolated oligohydramnios in third trimester maternal oral hydration has shown promising results in improving maternal and perinatal outcome.Methods: This study was conducted on 50 pregnant women complicated by idiopathic oligohydramnios (AFI<5) in third trimester. Their pre hydration daily fluid intake was noted and they were advised to take oral fluids more than their usual intake (according to their convenience). The daily fluid intake and AFI was measured on day1, day2, day3 then weekly till delivery. At delivery maternal and fetal outcome were measured.Results: The mean AFI of the study population at the time of enrolment was 4.25±1.01 and daily mean fluid intake was 1.46±0.41. The post hydration fluid intake per day was significantly high as compared to pre hydration fluid intake (4.40±0.51 litres vs 1.46±0.41 litres, p<0.001). A significant difference in the amniotic fluid index was seen post hydration. The mean AFI on day 1, day 2, day 3 was 6.19±0.93, 7.33±1.13, 8.0±1.07 as compared to pre hydration AFI 4.25±1.01 (p<0.001). The amniotic fluid index post hydration normalized (AFI>8) in 6%, 30%, 61% and 100% of women on day1, day2, day3 and after a week. The perinatal outcome was favourable in all the women with 100% live births and a mean birth weight of 2.77±0.29 kg.Conclusions: A simple correction of maternal dehydration by an adequate and sustained daily oral fluid intake in pregnancies complicated by isolated third oligohydramnios in third trimester significantly improves amniotic fluid index, maternal outcome and perinatal outcome.
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Fauza, Ahdiyatul, and Widya Astuti. "Hydration In Athletes: A Literature Review." Journal of Applied Food and Nutrition 2, no. 1 (February 8, 2022): 25–33. http://dx.doi.org/10.17509/jafn.v2i1.42698.
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The aim of this study to review the most recent research on the factors that most influence hydration. This study review using the literature research from google scholar, PubMed, and Elsevier. Many athletes after training experience dehydration due to not consuming enough fluids and electrolytes before, during training, and competition. To assess hydration status cannot be determined by just one factor. The general recommendation of hydration status measures using accurate biomarkers to detect body water fluctuations of 3% of total body water (TBW), using dehydration index, body mass, or color of urine. Therefore, monitoring hydration status is very important to maintain athlete performance. Exercise increases hypohydration due to fluid losses so that should be given to fluid supplementation and intake from certain food for each athlete. The factor that most influences the athlete's hydration is sweat loss and fluid intake.
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Mulder, Pamela J., and Sue E. Gardner. "The Healthy Newborn Hydration Model." Biological Research For Nursing 17, no. 1 (April 15, 2014): 94–99. http://dx.doi.org/10.1177/1099800414529362.
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The normal small volume of breast milk produced in the first 2 days following birth may raise concerns about adequate hydration in breast-fed newborns. These concerns are further magnified when breast-fed infants lose ≥7% of their birth weight within 2 days postnatally. Weight loss following birth is presumably mostly water loss that could result in hypohydration and subsequent hypernatremic dehydration. However, excess fluid loss immediately following birth is a normal and necessary process. Furthermore, newborns exposed to excess fluid intake during labor may need to lose ≥7% of birth weight in the first 2 days following birth in order to achieve euhydration. Normal newborn fluid loss following birth confounds the use of weight loss as the sole measure of newborn hydration. We thus propose the healthy newborn hydration model that highlights the normalcy of newborn weight loss immediately following birth and the healthy newborn’s compensatory mechanisms for preserving adequate hydration. We also recommend the use of serum sodium to measure intravascular osmolarity in addition to monitoring weight loss to obtain a more comprehensive newborn hydration assessment. Research is necessary in healthy newborns to identify relationships among fluids received in utero, newborn weight loss, and hydration, as evaluated with laboratory measures, in the first 2 days following birth. This information will guide clinicians in correctly identifying newborns with inadequate hydration who are in need of supplementary fluids versus newborns with adequate hydration for whom exclusive breast-feeding can be supported and encouraged.
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Greene, Carolynn, Jennie Wilson, Alison Tingle, and Heather Loveday. "An exploration of hydration care for nursing home residents living with dementia." Nursing and Residential Care 23, no. 12 (December 2, 2021): 1–8. http://dx.doi.org/10.12968/nrec.2021.23.12.3.
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Background/aims Older adults residing in nursing homes are vulnerable to dehydration. Residents living with dementia can experience additional challenges, making it difficult to independently consume sufficient fluids. The aim of this study was to describe the experience of hydration care for nursing home residents living with dementia. Methods Observations of hydration care were conducted between 06:00 and 22:45 on one care home unit. Twenty-two residents with dementia were eligible for observation. Conversations with staff and relatives provided further insights. The data were analysed using thematic analysis. Findings Hydration care provision was highly routinised with little flexibility. Residents received limited support to express individual choices, and staff missed opportunities to provide drinks. More fluid was consumed when care staff developed strategies to encourage fluid intake. Conclusions Key factors to optimise hydration care include providing individual support to encourage fluid intake and expression of choice, flexible care routines, and focus on communication and teamworking.
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Bo, Kehao, Yan Jin, Yunhu Lu, Hongtao Liu, and Jinzhi Zhu. "A Quantitative Evaluation Method of Anti-Sloughing Drilling Fluid Inhibition for Deep Mudstone." Energies 15, no. 3 (February 8, 2022): 1226. http://dx.doi.org/10.3390/en15031226.
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Wellbore instability resulting from deep mudstone hydration severely restricts the development of oil and gas resources from deep reservoir in western China. Accurate evaluation of drilling fluid inhibition properties plays an important role in selecting drilling fluid that can control deep mudstone hydration and then sustain wellbore stability. The previous evaluations are conducted by qualitative analysis and cannot consider the influence of complex hydration conditions of deep mudstone (high temperature, high pressure and flushing action). The study proposes a quantitative method to evaluate drilling fluid’s inhibition property for deep mudstone under natural drilling conditions. In this method, the cohesive strength of mudstone after hydration is adopted as the inhibition index of the tested drilling fluid. An experimental platform containing a newly designed HPHT (High pressure and high temperature) hydration experiment apparatus and mechanics characterization of mudstone after hydration based on scratch test is proposed to obtain the current inhibition index of tested drilling fluid under deep well drilling environments. Based on the mechanical–chemical wellbore stability model considering strength weakening characteristics of deep mudstone after hydration, a cross-correlation between drilling fluid density (collapse pressure) and required inhibition index (cohesive strength) for deep mudstone is provided as the quantitative evaluation criterion. Once the density of tested mud is known, one can confirm whether the inhibition property of tested mud is sufficient. In this study, the JDK mudstone of a K block in western China is selected as the application object of the proposed evaluation method. Firstly, the evaluation chart, which can demonstrate the required inhibition indexes of the tested fluids quantitatively with various densities for JDK mudstone, is constructed. Furthermore, the experimental evaluations of inhibition indexes of drilling fluids taken from two wells in K block are conducted under ambient and deep-well drilling conditions, respectively. In order to show the validity and advantage of the proposed method, a comparison between the laboratory evaluation results and field data is made. Results show that the laboratory evaluation results under deep-well drilling conditions are consistent with the field data. However, the evaluation under ambient conditions overestimates the inhibition property of the tested fluid and brings a risk of wellbore instability. The developed quantitative method can be a new way to evaluate and optimize the inhibition property of drilling fluid for deep mudstone.
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Bottin, Jeanne H., Clémentine Morin, Isabelle Guelinckx, and Erica T. Perrier. "Hydration in Children: What Do We Know and Why Does it Matter?" Annals of Nutrition and Metabolism 74, Suppl. 3 (2019): 11–18. http://dx.doi.org/10.1159/000500340.
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In children, maintaining adequate fluid intake and hydration is important for physiological reasons and for the adoption of healthy, sustainable drinking habits. In the Liq.In7 cross-sectional surveys involving 6,469 children (4–17 years) from 13 countries, 60% of children did not meet the European Food Safety Authority (EFSA) adequate intake for water from fluids. Beyond fluid quantity, the quality of what children drink is important for health. In these surveys, the contribution of sugar-sweetened beverages and fruit juices to total fluid intake (TFI) in children exceeded that of water in 6 out of 13 countries. To assess the adequacy of children’s fluid intake, urinary biomarkers of hydration such as urine osmolality, urine specific gravity, and urine color may be used. To date, while there are no widely accepted specific threshold values for urine concentration to define adequate hydration in children, the available literature suggests that many children have highly concentrated urine, indicating insufficient fluid intake. This is worrisome since studies have demonstrated a relationship between low fluid intake or insufficient hydration and cognitive performance in children. Furthermore, results of the Liq.In7 surveys showed that at school – where children spend a significant amount of time and require optimal cognitive performance – children drink only 14% of their TFI. Consequently, it is pertinent to better understand the barriers to drinking water at school and encourage the promotion of water intake through multicomponent interventions that combine educational, environmental, and behavioral aspects to support adequate hydration as well as optimal cognition in children.
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Horswill, Craig A. "Effective Fluid Replacement." International Journal of Sport Nutrition 8, no. 2 (June 1998): 175–295. http://dx.doi.org/10.1123/ijsn.8.2.175.
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As a result of exercise-induced sweating, athletes and trained individuals can lose up to 3 L of fluid per hour. Fluid replacement is required to maintain hydration and allow the athlete to continue to perform. Inadequate fluid intake will adversely affect temperature regulation, cardiovascular function, and muscle metabolism. To maximize fluid intake and effectively replace fluid, athletes must employ behavioral strategies. Athletes can also select beverages with characteristics that complement their behavioral efforts. Palatability, rapid absorption, retention of the fluid, and ergogenicity are the major attributes to consider for enhancing hydration during training and physical activity.
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Jusoh, N., and S. Salim. "Association between hydration status, hydration knowledge and fluid consumption during training among soccer players." Physical education of students 23, no. 1 (December 25, 2018): 23–29. http://dx.doi.org/10.15561/20755279.2019.0104.
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Study Aim: The purpose of this study was to determine the correlation between hydration status, knowledge of hydration and the amount of fluid intake consumption during training among the soccer players. Material and Methods: Pre-training hydration status was measured by urine colour chart and Urine Specific Gravity (USG). A questionnaire on hydration knowledge was answered by the participants on the last day of training session. Pearson Correlation test was used to analyse the correlation between hydration status, knowledge of hydration and total amount of fluid intake among the participants. Results: The results showed that the participants were dehydrated during the three days of training. Sixty four percent of the participants had a satisfactory knowledge of hydration. However, the results indicated that the sweat loss was higher than fluid intake during the training. Pearson test revealed there were positive correlation between USG and urine colour (r=0.809, p<0.001) as well as urine colour and fluid intake (r = .424, p<0.05). Conclusions: In conclusion, the findings indicate the needs to increase awareness of pre training hydration status among the participants.
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Kovacs, Mark S. "A Review of Fluid and Hydration in Competitive Tennis." International Journal of Sports Physiology and Performance 3, no. 4 (December 2008): 413–23. http://dx.doi.org/10.1123/ijspp.3.4.413.
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Hypohydration is known to impair performance and increases the risk of heat injury. Therefore, the consumption of appropriate fluid volumes before, during, and after tennis play is important to maintain physiological homeostasis and performance. Tennis is a sport that typically has points lasting fewer than ten seconds, with short-to-moderate rest periods between each work bout. This sequence is repeated over hours. Most fuid and hydration research has focused on continuous aerobic exercise, which provides vastly different physiological strain compared with tennis practice and competition. Consequently, practical recommendations on maintaining hydration status for aerobic continuous exercise may not be appropriate for tennis athletes. Tennis players can sweat more than 2.5 L·h−1and replace fluids at a slower rate during competition than in practice. In warm and hot environments, electrolyte-enhanced fluid should be consumed at greater than >200 mL per changeover and ideally closer to 400 mL per changeover. Tennis scientists, coaches, and players need to individualize hydration protocols to arrive at the optimal hydration strategy.
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Vourliotis, N., K. Grimshaw, and R. Harris. "5 Quality Improvement Project (QIP): A Teamwork Approach to Optimise Fluid Intake in Older Inpatients #ButFirstADrink." Age and Ageing 50, Supplement_1 (March 2021): i1—i6. http://dx.doi.org/10.1093/ageing/afab028.05.
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Abstract The shortfalls of hydration management have been widely exposed since the Frances report in 2013. Age-related changes create challenges for people to drink adequate fluid amounts (Nazarko, 2018), making dehydration prevention in older people an ongoing public health priority (NICE, 2016). Hydration needs of older people are complex and may not be fully understood. A proactive MDT approach to facilitate regular drinking opportunities seems an achievable solution to increase hydration awareness, knowledge and daily fluid intake in older inpatients. A QI methodology was used, including stakeholder engagement and PDSA learning cycles to influence, engage and educate staff on hydration management. Outcome measures: Fluid intake (ml/day), number of drinks/days based on fluid balance chart recordings. Interventions: Sharing the #ButFirstADrink social media hydration movement, which includes educational posters, flyers and a YouTube video. Face to face drop-in education sessions were implemented using local hydration education resources from Age UK Salford and GM nutrition and hydration programme as teaching tools. SPC charts were used to show a time-series data. In 15 weeks, 461/525 fluid charts were reviewed from 169 patients. Mean age was 84 years and 68% females. Average daily fluid intake increased by 25% (exceeding aim) indicating 176mls more fluid was offered on average/day. Mean number of drinks/days increased from 4.6 to 6 post interventions. Knowledge and attitude improved in some areas; however fluid output is not routinely recorded. Post intervention, 89% of staff felt that offering a drink at first contact is a suitable hydration promotion campaign. The project scored 58% using the NHS sustainability model (ACT Academy, 2018) suggesting reason for optimism. As it is a behaviour change project, further engagement and momentum is dependent on ongoing enthusiasm to drive the #ButFirstADrink approach. This intervention is free, simple and innovative and stimulates behaviour change, raises drinking awareness and increases hydration.
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Wang, Hao, Ming Li, You Zhi Zheng, and Tao Gu. "Function Synergy of a New Type of Fluid Loss Additive Formula for Comprehensive Performance of Oil Well Cement." Materials Science Forum 993 (May 2020): 1319–32. http://dx.doi.org/10.4028/www.scientific.net/msf.993.1319.
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With 2-acrylamido-2-methylpropanesulfonic acid (AMPS) units on polymeric additive, additive showed high effectiveness used for oilwell cement. However, due to chemical absorption and chelation mechanism of AMPS units to Ca2+ hydrating cement particles, adding of AMPS type additives caused delay of cement hydration process. In this research, AMPS type fluid loss additive, named as FLA A additive, was studied for its hydration delay side effect to class G Portland cement. Furthermore, polyvinyl alcohol (PVA) polymer, modified by glyoxal and boric acid, called as PVAGB was used as a synergistic functional additive to AMPS type polymer fluid loss additive to research on hydration delay problem of AMPS type additive to cement and the improvement for the effectiveness of AMPS type fluid loss additive. When AMPS type additive showed functional drawbacks, with more disordered chemical absorption and chelation behaviors to Ca2+ hydrated cement particles rather than constituting a completed and superior fluid loss control system, and this kind of modified PVA polymer was utilized for making up its failure. New compound additive formula, PVAGB/FLA A fluid loss additive formula, was investigated, which showed superior and more stable fluid loss control ability, i.e. about 50 mL at 30°C and 108 mL at 80 °C with just 0.2 % BWOC (weight percentage by weight of cement) PVAGB and 0.5 %BWOC (weight percentage by weight of cement) FLA A addition. In addition, within 28-day curing period, cement samples showed a healthy compressive-strength development with no less than 28MPa after 7-day curing period rather than failure due to cement strength retrogression. With scanning electron microscope (SEM) analysis, PVAGB showed accelerating effect to cement hydration process, in which hexagonal plate Ca(OH)2 crystal and aggregated product of C-S-H gel were formed when compared with pure cement and cement with FLA A additive added.
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Zafar, Humaira, Mubashra Naz, Umber Fatima, Uzma Shahzad, Anees Fatima, and Attiya Yasmeen. "Oral versus intravenous maternal hydration in isolated third trimester oligohydramnios." International Journal of Research in Medical Sciences 8, no. 10 (September 24, 2020): 3449. http://dx.doi.org/10.18203/2320-6012.ijrms20204214.
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Background: To study the effect of oral and intravenous maternal hydration in patients with isolated oligohydramnios in terms of mean change in amniotic fluid.Methods: A total number of 38 patients included in the study which fulfill the selection criteria. Patients were randomly divided in two groups. Amniotic fluid index (AFI) of all patients was measured before the hydration therapy according to the method of Phelan et al. In maternal oral hydration (Group A), every patient was instructed to drink two liters of water over two hours daily for 1 week. In intravenous hydration (Group B), every woman infused two liters of 0.9% normal saline in two hour daily for 1 week. After 48 hours and 1 week of oral and intravenous hydration, the AFI was reassessed by the same observer. Patients were monitored closely for sign and symptoms of fluid overload. Data was stratified for mean difference in improvement in amniotic fluid index.Results: After oral hydration therapy AFI was 5.926±0.4593 after 48 hours and 8.286±0.6000 after 7 days in Group A. In Group B AFI was 5.784±0.4622 after 48 hours and 7.868±0.2810 after 7 days of intravenous hydration. P value after 48 hours is 0.348 and p=0.014 after 7 days means oral hydration therapy significantly increase amniotic fluid index.Conclusions: Oral maternal hydration significantly increase the amniotic fluid index in patients with isolated oligohydramnios. It is simple, safe and non-invasive method.
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Nurfadhila, Risti. "Pengetahuan mengenai asupan cairan dan hidrasi pada atlet tenis lapangan Universitas Negeri Yogyakarta." MAJORA: Majalah Ilmiah Olahraga 27, no. 1 (March 1, 2021): 1–5. http://dx.doi.org/10.21831/majora.v27i1.39062.
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Kompetisi tenis lapangan biasanya dilakukan di outdoor dengan cuaca panas. Hal ini dapat menyebabkan atlet tenis lapangan kehilangan banyak cairan tubuh. Oleh karena itu, pengetahuan mengenai asupan cairan dan hidrasi perlu diketahui dengan baik oleh atlet. Tujuan penelitian ini adalah untuk mengetahui pengetahuan mengenai asupan cairan dan hidrasi pada atlet tenis lapangan Universitas Negeri Yogyakarta. Penelitian ini merupakan penelitian deskriptif kuantitatif. Pengambilan data menggunakan metode survei dengan kuesioner. Subjek dalam penelitian ini adalah atlet tenis lapangan Universitas Negeri Yogyakarta yang terdiri dari atlet laki-laki dan perempuan. Teknik analisis data yang digunakan dalam penelitian ini adalah persentase. Hasil penelitian menunjukkan bahwa mayoritas atlet tenis lapangan mahasiswa Universitas Negeri Yogyakata memiliki pengetahuan yang baik mengenai asupan cairan dan hidrasi dengan persentase sebesar 83,34% dari keseluruhan subjek penelitian. Berdasarkan pada hasil penelitian dapat disimpulkan bahwa tingkat pengetahuan asupan cairan dan hidrasi atlet tenis lapangan mahasiswa Universitas Negeri Yogyakarta termasuk pada kategori baik. Pengetahuan mengenai asupan cairan dan hidrasi perlu dioptimalkan kembali supaya seluruh atlet memiliki pengetahuan yang baik. Fluid replacement and hydration knowledge of Universitas Negeri Yogyakarta tennis athletes AbstractsTennis competitions are usually held outdoors in hot weather. This can cause tennis athletes to lose a lot of body fluids. Therefore, it is necessary to know well about fluid replacement and hydration by athletes. The purpose of this study was to determine knowledge about fluid replacement and hydration in tennis athletes at Yogyakarta State University. This research is quantitative descriptive. Collecting data using a survey method with a questionnaire. Subjects in this study were tennis athletes of the Universitas Negeri Yogyakarta consisting of male and female athletes. The results showed that the student tennis athletes of Universitas Negeri Yogyakarta had good knowledge about fluid replacement and hydration with a proportion of 83.34% of the total research subjects. Based on the results of the study, it can be ignored that the knowledge level of fluid replacement and hydration of tennis athletes is in the good category. Knowledge about fluid replacement and hydration needs to be re-optimized so that all athletes have good knowledge.
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Pietrobelli, Angelo, Zimian Wang, Carmelo Formica, and Steven B. Heymsfield. "Dual-energy X-ray absorptiometry: fat estimation errors due to variation in soft tissue hydration." American Journal of Physiology-Endocrinology and Metabolism 274, no. 5 (May 1, 1998): E808—E816. http://dx.doi.org/10.1152/ajpendo.1998.274.5.e808.
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Dual-energy X-ray absorptiometry (DXA) is rapidly gaining acceptance as a reference method for analyzing body composition. An important and unresolved concern is whether and to what extent variation in soft tissue hydration causes errors in DXA fat estimates. The present study aim was to develop and validate a DXA physical hydration model and then to apply this model by simulating errors arising from hypothetical overhydration states. The DXA physical hydration model was developed by first linking biological substance elemental content with photon attenuation. The validated physical model was next extended to describe photon attenuation changes anticipated when predefined amounts of two known composition components are mixed, as would occur when overhydration develops. Two overhydration models were developed in the last phase of study, formulated on validated physical models, and error was simulated for fluid surfeit states. Results indicate that systematic errors in DXA percent fat arise with added fluids when fractional masses are varied as a percentage of combined fluid + soft tissue mass. Three independent determinants of error magnitude were established: elemental content of overhydration fluid, fraction of combined fluid + soft tissue as overhydration fluid, and initial soft tissue composition. Small but systematic and predictable errors in DXA soft tissue composition analysis thus can arise with fluid balance changes.
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Carvalho, Pedro, Bruno Oliveira, Renata Barros, Patrícia Padrão, Pedro Moreira, and Vítor Hugo Teixeira. "Impact of Fluid Restriction and ad Libitum Water Intake or an 8% Carbohydrate-Electrolyte Beverage on Skill Performance of Elite Adolescent Basketball Players." International Journal of Sport Nutrition and Exercise Metabolism 21, no. 3 (June 2011): 214–21. http://dx.doi.org/10.1123/ijsnem.21.3.214.
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Twelve adolescent athletes underwent, in a crossover-design study, 3 separate 90-min training sessions in the following conditions: no fluid ingestion allowed (NF), ad libitum ingestion of water (W), and ad libitum ingestion of a commercial 8% carbohydrate-electrolyte sports beverage (CSB). After each session athletes performed a set of basketball drills (2-point, 3-point, and free-throw shootout, suicide sprints, and defensive zigzags). Body weight (before and after sessions), rating of perceived exertion (RPE), urine color, and beverage acceptability were determined in each session. Athletes also completed a survey about their knowledge and behaviors regarding hydration and fluid replacement. The percentage of weight loss was significantly higher in NF (2.46% ± 0.87%) than in the other 2 conditions (W, 1.08% ± 0.67%, p = .006; CSB, 0.65% ± 0.62%, p = .001) but also higher in W than CSB (p = .012). RPE was higher in NF (16.8 ± 1.96) than in the W (14.2 ± 1.99, p = .004) and CSB (13.3 ± 2.06, p = .002) trials. Athletes’ fluid intake was positively correlated with proper self-reported behaviors (r = .75, p = .005) and knowledge (r = .76, p = .004) about fluid and hydration. In conclusion, fluid restriction during exercise was associated with a greater level of dehydration and increased perceived exertion but had no impact on basketball performance compared with ad libitum drinking of water or a CSB. Athletes with more knowledge about hydration and better self-reported hydration behaviors ingested more fluids during training sessions.
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Ceylan, Bayram, and Luis Santos. "Fluid intake, hydration status and body mass changes in U-15 judo athletes during a training day." Acta Scientiarum. Health Sciences 44 (January 17, 2022): e57233. http://dx.doi.org/10.4025/actascihealthsci.v44i1.57233.
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Despite numerous studies related to dehydration there is still a lack of scientific literature presenting hydration status and fluid intake of judo athletes during different periods. Therefore, the aim of this study was to investigate, fluid intake, hydration status and body weight changes of young judo athletes during a typical day of training in preparation period. Twenty-two young judo athletes (age: 12 ± 0.7 y, experience: 3.5 ± 1.1) voluntarily participated in this study. Hydration status and weight were examined in the morning, before and immediately after the training. All athletes trained 90 min and they consumed fluids ad libitum during the exercise. According to morning urine specific gravity (USG) values, 81.2% of the athletes were dehydrated while only 18.8% of the athletes were euhydrated. Pre-training urine measurements showed that 63.64% of the athletes presented dehydration and 77.27% of the athletes completed the training in dehydrated condition despite fluid availability during the training. Mean body weight loss during training was -0.64 ± 0.66%. It can be concluded that young judo athletes presented high prevalence of dehydration as indicated by USG values. Most of the athletes were dehydrated during a typical training day and completed the training in more dehydrated conditions compared to pre training values despite ad libitum fluid intake. It is of great importance to evaluate hydration status of the athletes before training to refrain from common practice of fluid restriction for weight loss and adverse effects of a persistent state of fluid deficit on physical and health related state.
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Lukaski, Henry C., Nicanor Vega Diaz, Antonio Talluri, and Lexa Nescolarde. "Classification of Hydration in Clinical Conditions: Indirect and Direct Approaches Using Bioimpedance." Nutrients 11, no. 4 (April 10, 2019): 809. http://dx.doi.org/10.3390/nu11040809.
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Although the need to assess hydration is well recognized, laboratory tests and clinical impressions are impractical and lack sensitivity, respectively, to be clinically meaningful. Different approaches use bioelectrical impedance measurements to overcome some of these limitations and aid in the classification of hydration status. One indirect approach utilizes single or multiple frequency bioimpedance in regression equations and theoretical models, respectively, with anthropometric measurements to predict fluid volumes (bioelectrical impedance spectroscopy—BIS) and estimate fluid overload based on the deviation of calculated to reference extracellular fluid volume. Alternatively, bioimpedance vector analysis (BIVA) uses direct phase-sensitive measurements of resistance and reactance, measured at 50 kHz, normalized for standing height, then plotted on a bivariate graph, resulting in a vector with length related to fluid content, and direction with phase angle that indexes hydration status. Comparison with healthy population norms enables BIVA to classify (normal, under-, and over-) and rank (change relative to pre-treatment) hydration independent of body weight. Each approach has wide-ranging uses in evaluation and management of clinical groups with over-hydration with an evolving emphasis on prognosis. This review discusses the advantages and limitations of BIS and BIVA for hydration assessment with comments on future applications.
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Setyarsih, Liani, Martha Ardiaria, and Deny Yudi Fitranti. "HUBUNGAN DENSITAS ENERGI DAN ASUPAN CAIRAN DENGAN BERAT JENIS URIN PADA REMAJA." Journal of Nutrition College 6, no. 4 (November 22, 2017): 326. http://dx.doi.org/10.14710/jnc.v6i4.18670.
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Background: Hydration status is a condition that describes total body fluid. One of the method of measuring hydration status is urine specific gravity. Energy density of food is the amount energy content of total weight food. Foods with high energy density tend to have a lower water content, which will affect fluid intake. The aim of this research was to know the correlation of energy density and fluid intake with urine specific gravity as one of the markers of hydration status. Method: This was an observational research with cross-sectional study design. The research was conducted in Senior High School 15 Semarang involving 55 subjects by Simple Random Sampling method. Food intake and fluid intake were assessed by 1x24 hours Food Recall. Urine specific gravity measured in laboratory. Body fat percentage measured by BIA (Bioelectrical Impendance Analysis) and physical activity assessed by 1x24 hours record physical activity. Data were analyzed by rank spearman.Result: Median of urine specific gravity men and women was 1,02 g/ml. Mean of energy density in men was 1,8±0,32 kcal/gram, in women was 2,1±0,59 kkal/gram. Mean of fluid intake in men was 2406,4±491,38 ml, in women was 2159,5±648,42ml. There was significant correlation of fluid intake with hydration status (p=0,027). There was no significant correlation of energy density and hydration status (p=0,218). Multivariate analysis showed that 14,6% of hydration status is affected by both fluid intake and energy intake. Conclusion: There was significant correlation of fluid intake with urine specific gravity. There was no significant correlation of energy density and urine specific gravity.
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Steiner, Nathalie, and Eduardo Bruera. "Methods of Hydration in Palliative Care Patients." Journal of Palliative Care 14, no. 2 (June 1998): 6–13. http://dx.doi.org/10.1177/082585979801400202.
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A strong and often polarized debate has taken place during recent years concerning the consequences of dehydration in the terminally ill patient. When a patient has a severely restricted oral intake or is found to be dehydrated, the decision to administer fluids should be individualized and made on the basis of a careful assessment that considers problems related to dehydration, potential risks and benefits of fluid replacement, and patients’ and families’ wishes. This review discusses the assessment of hydration status in the terminal cancer patient and the options for fluid administration in the cases where evaluation of the patients’ condition has led to this indication. These include different modes of hypodermoclysis, intravenous hydration, use of the nasogastric route, and proctoclysis. Arguments for and against rehydration have been previously addressed by other authors and fall outside the scope of this review.
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Musgrave, Catherine F., Nira Bartal, and Jorunn Opstad. "The Sensation of Thirst in Dying Patients Receiving IV Hydration." Journal of Palliative Care 11, no. 4 (December 1995): 17–21. http://dx.doi.org/10.1177/082585979501100404.
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Cancer patients in the terminal phase of their disease often experience fluid deficits. This is mainly due to their inability to ingest adequate amounts of oral fluids to meet the body's physiological demands. In order to correct this deficit, intravenous (IV) fluid programs are often instituted. This pilot study was conducted on a group of terminal patients hospitalized in an oncology unit who died while receiving IV fluids. It sought to assess the effects of these fluids on their level of thirst. Data were collected on 30 patients in the last 24 hours of life. However, of the 30 patients only 19 were sufficiently alert to be able to verbally evaluate their thirst intensity. Of the 19 patients, six experienced mild thirst, eight moderate thirst, and four severe thirst. This was in spite of IV hydration regimens which ranged from 500 mL to 3000 mL. Little relationship was found between level of thirst and the amount of IV fluids received, blood urea nitrogen (BUN), or sodium blood levels. In addition, although 70% of the patients had fluid retention signs, there was little correlation between these signs and the amount of fluids received. Since the pilot study's sample was small, definitive conclusions could not be drawn. However, our results highlight the need for future research in this area.
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Junejo, Shizma, Talea Hoor, and Misbah Riaz. "Appropriate Hydration Can Make a Difference." Life and Science 3, no. 1 (December 31, 2021): 3. http://dx.doi.org/10.37185/lns.1.1.214.
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Water is an essential component in terms of having a role in building of human body. The total body watercontent must be adequately maintained for the health and wellbeing of an individual. Water intake as well aswater loss is governed by efficacious homeostatic mechanisms which are receptive to even minute changessuch as hundred milliliters. Water deficit happens as hypohydration when fluid intake is not sufficient to replacefluid losses. When water loss exceeds the amount of water consumed, dehydration results. Mild dehydration isdescribed as fluid loss being around 1-2% of total body fluids. Severe dehydration occurs with fluid loses over5%. Dehydration has remarkable consequences including effect on body temperature, respiratory rate, mentalfunctioning and muscle endurance. Overall, the role of water as a necessary nutrient is indispensable.Consequently, appropriate hydration status is extremely imperative for health and wellbeing of an individual.1 The human body contains around 70% of water. In terms of body weight water makes up 75% in infants and55% in elderly. Water is necessary for cellular homeostasis as well as life. Still plentiful unanswered2 questions exist regarding this extremely imperative constituent of our body and our diet. The water in the1 body has diverse physiological roles. These include being required for breathing for oxygen transport to thecells, metabolism, digestion and absorption of nutrients, detoxification of the body, regulation of body1 temperature, upkeep of equal osmotic pressure in cells as well as extracellular space etc. Water should betreated as vital nutrient in diet. Accordingly, it is imperative for health to have total body water (TBW) contentin appropriate standards.
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Dieny, Fillah Fithra, Anggia Berlian Buntarlan, Etika Ratna Noer, and Choirun Nissa. "Effect of hydration education with whatsapp group media in increasing in fluid knowledge, fluid intake and hydration status of football athletes." Jurnal SPORTIF : Jurnal Penelitian Pembelajaran 7, no. 2 (August 8, 2021): 180–93. http://dx.doi.org/10.29407/js_unpgri.v7i2.15875.
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This study aim to determine the effectiveness of WhatsApp group social media use to increase knowledge, fluid intake hydration status among football athletes. This type of research is experimental on athletes aged 15-18 years old in Bantolo football club. As many as 30 athletes were taken as sample by using consecutive sampling, divided into 3 groups. Nutritional information interventions regarding fluid regulation for athletes were given within a month by using different media for each group; PowerPoint (GPP), Whatsapp (GWA), and leaflet for control group. After the intervention there was an increase of knowledge in the GPP and the GWA. The subject has increase in fluid intake on the day before exercise, the training day and the day after. The increase in fluid intake for the training day was in the Control Group, GPP, and GWA. And after the intervention there was an increase in hydration status before training in the GPP, the GWA and in the hydration status after training there was an increase in the Control Group, the GPP, GWA. Thus, from the study, it could be concluded that Whatsapp is the most effective medium to increase nutritional knowledge and fluid intake the day before training, trainingday and day after exercise and hydration status before and after.Providing information using Whatsapp media is more effective in increasing nutritional knowledge, fluid intake and hydration status.
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Nur'aini, Dwi Lisa, Ardesy Melizah Kurniati, Moretta Damayanti, Syarif Husin, and Joko Marwoto. "Fluid consumption, hydration status, and its associated factors: a cross sectional study among medical students in Palembang, Indonesia." World Nutrition Journal 5, no. 1 (February 26, 2021): 88. http://dx.doi.org/10.25220/wnj.v05.i1.0012.
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Background: Adequate fluid consumption and hydration status of students become a special concern because being dehydrated by just 1%-2% can impair cognitive performance. The objectives of this study were to assess the daily fluid consumption, and analyze the correlation of fluid consumption and other associated factors with hydration status of medical students in Universitas Sriwijaya.Methods: A total of 93 medical students in Universitas Sriwijaya were recruited to complete a 7-day cross-sectional study. Subjects were asked to complete a self-administered 7-day-24-hours fluid record and provide first morning urine sample on the last day. Gender information was collected. Physical activity was evaluated by self-administered long version of IPAQ. Body mass index was calculated using body weight and body height measurement. Urine specific gravity was determined by urinometer. The 7-day-24-hours fluid record and 1-day-24-hours urine specific gravity were calculated and analyzed.Results: Majority of the subjects were well hydrated, while 10.8% were slightly dehydrated, 6.5% were moderately dehydrated and 9.7% were severely dehydrated. The average of daily fluid consumption was 1789.28 (989.3-2930) mL. Coefficient correlation of fluid consumption from beverages with urine specific gravity was -0.651 (p=0.00) by Pearson correlation test. The hydration status showed no association with gender, physical activity and body mass index.Conclusions: Most subjects in this study were well hydrated. A strong association was found between fluid consumption and hydration status. It was feasible to use daily fluid consumption from beverages to predict hydration status.
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Kurniati, Ardesy Melizah, Moretta Damayanti, and Nur Mahmudah. "Fluid consumption, hydration status, and its associated factors: a cross sectional study among medical students in Palembang, Indonesia." World Nutrition Journal 4, no. 1-3 (October 27, 2020): 43. http://dx.doi.org/10.25220/wnj.v04.s3.0031.
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Background: Adequate fluid consumption and hydration status of students become a special concern because being dehydrated by just 1%-2% can impair cognitive performance. The objectives of this study were to assess the daily fluid consumption, and analyze the correlation of fluid consumption and other associated factors with hydration status of medical students in Universitas Sriwijaya.Methods: A total of 93 medical students in Universitas Sriwijaya were recruited to complete a 7-day cross-sectional study. Subjects were asked to complete a self-administered 7-day-24-hours fluid record and provide first morning urine sample on the last day. Gender information was collected. Physical activity was evaluated by self-administered long version of IPAQ. Body mass index was calculated using body weight and body height measurement. Urine specific gravity was determined by urinometer. The 7-day-24-hours fluid record and 1-day-24-hours urine specific gravity were calculated and analyzed.Results: Majority of the subjects were well hydrated, while 10.8% were slightly hydrated, 6.5% were moderately hydrated and 9.7% were severely dehydrated. The average of daily fluid consumption was 1789.28 (989.3-2930) mL. Coefficient correlation of fluid consumption from beverages with urine specific gravity was -0.651 (p=0.00) by Pearson correlation test. The hydration status showed no association with gender, physical activity and body mass index.Conclusions: Most subjects in this study were well hydrated. A strong association was found between fluid consumption and hydration status. It was feasible to use daily fluid consumption from beverages to predict hydration status.
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Emerson, Dawn M., Toni M. Torres-McGehee, Susan W. Yeargin, Kyle Dolan, and Kelcey K. deWeber. "Collegiate and Professional Ice Hockey Athletic Trainers’ Hydration Practices and Knowledge: Part 2." International Journal of Athletic Therapy and Training 25, no. 2 (March 1, 2020): 94–97. http://dx.doi.org/10.1123/ijatt.2018-0134.
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An athletic trainer’s (ATs) role requires current knowledge about factors that can influence hydration status. The purpose of this study was to determine awareness of alcohol and caffeine effects on hydration. Participants were 94 ATs with NCAA Division I or III men’s and/or women’s ice hockey teams and 82 head ATs with professional ice hockey teams. The majority of ATs were correct regarding alcohol’s effects on hydration, specifically knowing alcohol increases urine output (92.1%), delays fluid recovery (81.7%), and dehydrates a euhydrated individual (83.5%). In contrast, fewer ATs were correct that moderate, regular consumption of caffeine does not cause dehydration (20.7%), delay fluid recovery (15.2%), or impair fluid regulatory hormones (9.8%). While ATs were knowledgeable about alcohol effects, there remains misconceptions about caffeine on hydration.
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Higham, Dean G., Geraldine A. Naughton, Lauren A. Burt, and Xiaocai Shi. "Comparison of Fluid Balance between Competitive Swimmers and Less Active Adolescents." International Journal of Sport Nutrition and Exercise Metabolism 19, no. 3 (June 2009): 259–74. http://dx.doi.org/10.1123/ijsnem.19.3.259.
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The aim of this study was to compare daily hydration profiles of competitive adolescent swimmers and less active maturation- and sex-matched controls. Hydration profiles of 35 competitive adolescent swimmers (male n = 18, female n = 17) and 41 controls (male n = 29, female n = 12) were monitored on 4 consecutive days. First morning hydration status was determined independently by urine specific gravity (USG) and urine color. Changes in fluid balance were estimated during the school day and in training sessions after adjusting for self-reported urine losses and fluid intake. Urinalyses revealed consistent fluid deficits (USG >1.020, urine color ≥5) independent of activity group, sex, and day of testing (hypohydration in 73–85% of samples, p > .05). Fluid balance and intake were observed over typical school days in males and females from the 2 groups. During training, male swimmers lost more fluid relative to initial body mass but drank no more than females. Although both activity groups began each testing day with a similar hydration status, training induced significant variations in fluid balance in the swimmers compared with controls. Despite minimal fluid losses during individual training sessions (<2% body mass), these deficits significantly increased fluid needs for young swimmers over the school day.
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Yan, Chuanliang, Jingen Deng, and Baohua Yu. "Wellbore Stability in Oil and Gas Drilling with Chemical-Mechanical Coupling." Scientific World Journal 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/720271.
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Wellbore instability in oil and gas drilling is resulted from both mechanical and chemical factors. Hydration is produced in shale formation owing to the influence of the chemical property of drilling fluid. A new experimental method to measure diffusion coefficient of shale hydration is given, and the calculation method of experimental results is introduced. The diffusion coefficient of shale hydration is measured with the downhole temperature and pressure condition, then the penetration migrate law of drilling fluid filtrate around the wellbore is calculated. Furthermore, the changing rules of shale mechanical properties affected by hydration and water absorption are studied through experiments. The relationships between shale mechanical parameters and the water content are established. The wellbore stability model chemical-mechanical coupling is obtained based on the experimental results. Under the action of drilling fluid, hydration makes the shale formation softened and produced the swelling strain after drilling. This will lead to the collapse pressure increases after drilling. The study results provide a reference for studying hydration collapse period of shale.
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Kiran, Saima, Adeela Ameen, Ayesha Akram, and Mahwash Jamil. "Comparison of effects of oral maternal hydration and intravenous infusions on Amniotic Fluid Index in third trimester isolated Oligohydramnios." Professional Medical Journal 26, no. 12 (December 10, 2019): 2064–69. http://dx.doi.org/10.29309/tpmj/2019.26.12.3049.
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Objectives: To compare oral maternal hydration and intravenous infusion in women with third trimester isolated oligohydramnios in terms of mean change in amniotic fluid. Study Design: This is a Comparative Study. Setting: The study was conducted in Department of Gynecology, Pakistan Institute of Medical Sciences, Islamabad. Period: Between 1st May, 2015 to 31st July, 2016. Material & Methods: One hundred and fourteen pregnant females with singleton pregnancy, beyond 28 weeks gestation and AFI < 5cm were included. Placental insufficiency was ruled out on Doppler ultrasound of umbilical artery. Basal AFI and routine intake of fluid of all patients was noted. Patients were randomized either to receive oral maternal hydration or intravenous infusion. AFI measurement was repeated at 6th day after hydration therapy. Data was stratified for mean difference in improvement in amniotic fluid index. Results: One hundred and fourteen patients with mean age of 27.33 ± 3.87 years were included. 52 patients (45.6%) were primigravida and remaining 62 patients (54.4%) were multipara. Mean AFI value before treatment in sampled population was 3.35 ± 0.744 in oral hydration and 3.33 ± 0.787 in intravenous hydration (p=0.903). Mean AFI value after treatment was 5.53 ± 0.966 in oral hydration and 5.68 ± 1.490 in intravenous hydration, independent sample test showed non-significant (p=0.903) difference. Mean increase in AFI before and after treatment was cross tabulated and resultant difference was significant (p value=0.001). There is no effect of age, gestational age, history of oligohydramnios on improvement in amniotic fluid index. Conclusion: Both treatment modalities i.e. oral maternal hydration and intravenous infusion are effective in terms of improvement of amniotic fluid index but there is no difference in both treatments in pregnant females with isolated oligohydramnios in 3rd trimester at current sample size.
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Hew-Butler, Tamara. "Inadequate Hydration or Normal Body Fluid Homeostasis?" American Journal of Public Health 105, no. 10 (October 2015): e5-e6. http://dx.doi.org/10.2105/ajph.2015.302825.
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Calhoun, Simone. "Examining Maternal Hydration and Amniotic Fluid Volume." AWHONN Lifelines 3, no. 6 (December 1999): 20–24. http://dx.doi.org/10.1111/j.1552-6356.1999.tb01144.x.
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Shrestha, Buddha Ratna, and Xavier Banquy. "Hydration forces at solid and fluid biointerfaces." Biointerphases 11, no. 1 (March 2016): 018907. http://dx.doi.org/10.1116/1.4939679.
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Berry, Craig W., S. Tony Wolf, Bob Murray, and W. Larry Kenney. "Hydration Efficacy of a Milk Permeate-Based Oral Hydration Solution." Nutrients 12, no. 5 (May 21, 2020): 1502. http://dx.doi.org/10.3390/nu12051502.
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Milk permeate is an electrolyte-rich, protein- and fat-free liquid with a similar carbohydrate and mineral content to that of milk. Its hydration efficacy has not been examined. The beverage hydration index (BHI) has been used to compare various beverages to water in terms of post-ingestion fluid balance and retention. Our purpose was to compare the BHI (and related physiological responses) of a novel milk permeate solution (MPS) to that of water and a traditional carbohydrate–electrolyte solution (CES). Over three visits, 12 young subjects consumed 1 L of water, CES, or MPS. Urine samples were collected immediately post-ingestion and at 60, 120, 180, and 240 min. BHI was calculated by dividing cumulative urine output after water consumption by cumulative urine output for each test beverage at each time point. The BHI for MPS was significantly higher at all time points compared to water (all p < 0.001) and CES (all p ≤ 0.01) but did not differ between CES and water at any time point. Drinking 1 L of MPS resulted in decreased cumulative urine output across the subsequent 4 h compared to water and CES, suggesting that a beverage containing milk permeate is superior to water and a traditional CES at sustaining positive fluid balance post-ingestion.
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Altavilla, Cesare, Maria Soledad Prats Moya, and Pablo Caballero Pérez. "Hydration and nutrition knowledge in adolescent swimmers. Does water intake affect urine hydration markers after swimming?" International Journal of Applied Exercise Physiology 6, no. 4 (December 23, 2017): 37–45. http://dx.doi.org/10.22631/ijaep.v6i4.220.
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Little data exists regarding nutritional knowledge and hydration in adolescent swimmers. The aim of this study was to assess the level of nutrition and hydration knowledge and to describe the fluid balance in adolescent swimmers during training. A study was carried out with a cross-sectional descriptive part and a longitudinal part with repeated measurements over five swimming sessions. Eighty-six adolescent swimmers completed a questionnaire to assess their sport nutrition and hydration knowledge. Fluid balance and urine hydration markers were studied during training. Swimmers showed a limited nutrition knowledge (33.26 % ± SD 12.59) and meagre hydration knowledge (28.61 % ± SD 28.59). Females showed lower scores than male swimmers in nutrition and hydration knowledge. Based on urine specific gravity, swimmers started the training close to the euhydrated threshold (1.019 g/mL ± SD 0.008). Although urine specific gravity and urine colour were reduced after the training, there were minimal changes in body mass (-0.12 Kg ± SD 0.31). Sweat loss (2.67 g/min ± SD 3.23) and the net changes in the fluid balance (-0.22 % ± SD 0.59) were low. The poor knowledge in nutrition and hydration encountered in the swimmers can justify the development of a strategy to incorporate nutritional education programmes for this group. Body water deficit from swimming activity seems to be easily replaced with the water intake to maintain hydration. After the training, the urine of swimmers was diluted regardless of their water intake. Dilution of urine did not reflect real hydration state in swimming.
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Armstrong, Lawrence E., Amy C. Pumerantz, Kelly A. Fiala, Melissa W. Roti, Stavros A. Kavouras, Douglas J. Casa, and Carl M. Maresh. "Human Hydration Indices: Acute and Longitudinal Reference Values." International Journal of Sport Nutrition and Exercise Metabolism 20, no. 2 (April 2010): 145–53. http://dx.doi.org/10.1123/ijsnem.20.2.145.
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It is difficult to describe hydration status and hydration extremes because fluid intakes and excretion patterns of free-living individuals are poorly documented and regulation of human water balance is complex and dynamic. This investigation provided reference values for euhydration (i.e., body mass, daily fluid intake, serum osmolality; M ± SD); it also compared urinary indices in initial morning samples and 24-hr collections. Five observations of 59 healthy, active men (age 22 ± 3 yr, body mass 75.1 ± 7.9 kg) occurred during a 12-d period. Participants maintained detailed records of daily food and fluid intake and exercise. Results indicated that the mean total fluid intake in beverages, pure water, and solid foods was >2.1 L/24 hr (range 1.382–3.261, 95% confidence interval 0.970–3.778 L/24 hr); mean urine volume was >1.3 L/24 hr (0.875–2.250 and 0.675–3.000 L/24 hr); mean urine specific gravity was >1.018 (1.011–1.027 and 1.009–1.030); and mean urine color was ≥4 (4–6 and 2–7). However, these men rarely (0–2% of measurements) achieved a urine specific gravity below 1.010 or color of 1. The first morning urine sample was more concentrated than the 24-h urine collection, likely because fluids were not consumed overnight. Furthermore, urine specific gravity and osmolality were strongly correlated (r2 = .81–.91, p < .001) in both morning and 24-hr collections. These findings provide euhydration reference values and hydration extremes for 7 commonly used indices in free-living, healthy, active men who were not exercising in a hot environment or training strenuously.
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Kwan, Bonnie Ching-Ha, Cheuk-Chun Szeto, Kai-Ming Chow, Man-Ching Law, Mei Shan Cheng, Chi-Bon Leung, Wing-Fai Pang, Vickie Wai-Ki Kwong, and Philip Kam-Tao Li. "Bioimpedance Spectroscopy for the Detection of Fluid Overload in Chinese Peritoneal Dialysis Patients." Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis 34, no. 4 (June 2014): 409–16. http://dx.doi.org/10.3747/pdi.2013.00066.
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BackgroundFluid overload probably contributes to the cardiovascular risk of peritoneal dialysis (PD) patients. We studied the relationship between over-hydration as determined by bioimpedance spectroscopy and dialysis adequacy, nutritional status, and arterial stiffness in Chinese PD patients.MethodsWe studied 122 asymptomatic prevalent PD patients: bioimpedance spectroscopy, arterial pulse wave velocity, dialysis adequacy and nutritional status were determined.ResultsOf the 122 patients, 88 (72.1%) had over-hydration of ≥ 1 L, while 25 (20.5%) were ≥ 5 L. Over-hydration significantly correlated with total body water (r = 0.474, p < 0.001) and extracellular water (r = 0.755, p < 0.001). Over-hydration was more severe in male and diabetic patients, and significantly correlated with Charlson's comorbidity score, blood pressure, body mass index, body weight, peritoneal transport characteristics, and carotid-femoral pulse wave velocity. Over-hydration significantly correlated with Kt/V (r = -0.287, p = 0.016), serum albumin level (r = -0.465, p < 0.001) and malnutrition inflammation score (r = 0.410, p = 0.006), but not residual renal function.ConclusionOver-hydration is common in asymptomatic Chinese PD patients. The degree of over-hydration is particularly pronounced in patients who are inadequately dialyzed, have multiple comorbid conditions and low serum albumin levels. Over-hydration is associated with high blood pressure and arterial stiffness, and may contribute to the excessive risk of cardiovascular disease in this group of patients.
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Mei, Yuan, Weihua Liu, A. A. Migdiov, Joël Brugger, and A. E. Williams-Jones. "CuCl Complexation in the Vapor Phase: Insights from Ab Initio Molecular Dynamics Simulations." Geofluids 2018 (2018): 1–12. http://dx.doi.org/10.1155/2018/4279124.
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We investigated the hydration of the CuCl0 complex in HCl-bearing water vapor at 350°C and a vapor-like fluid density between 0.02 and 0.09 g/cm3 using ab initio molecular dynamics (MD) simulations. The simulations reveal that one water molecule is strongly bonded to Cu(I) (first coordination shell), forming a linear [H2O-Cu-Cl]0 moiety. The second hydration shell is highly dynamic in nature, and individual configurations have short life-spans in such low-density vapors, resulting in large fluctuations in instantaneous hydration numbers over a timescale of picoseconds. The average hydration number in the second shell (m) increased from ~0.5 to ~3.5 and the calculated number of hydrogen bonds per water molecule increased from 0.09 to 0.25 when fluid density (which is correlated to water activity) increased from 0.02 to 0.09 g/cm3 (fH2O 1.72 to 2.05). These changes of hydration number are qualitatively consistent with previous solubility studies under similar conditions, although the absolute hydration numbers from MD were much lower than the values inferred by correlating experimental Cu fugacity with water fugacity. This could be due to the uncertainties in the MD simulations and uncertainty in the estimation of the fugacity coefficients for these highly nonideal “vapors” in the experiments. Our study provides the first theoretical confirmation that beyond-first-shell hydrated metal complexes play an important role in metal transport in low-density hydrothermal fluids, even if it is highly disordered and dynamic in nature.
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Hakim, Ahmad Luqmanul, and Lilis Sulistyorini. "RELATIONSHIP OF ENVIRONMENTAL PHYSICAL FACTORS AND LIQUID INTAKE WITH HYDRATION STATUS OF LONTONG HOME INDUSTRY SURABAYA." Indonesian Journal of Public Health 16, no. 1 (April 12, 2021): 79. http://dx.doi.org/10.20473/ijph.v16i1.2021.79-88.
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A hot working environment can cause health problems for workers, one of them being dehydration. The hydration status of a worker can be influenced by the characteristic of the worker, physical environmental factors, and fluid intake. The objective of this study is to determine the relationship between workers’ characteristics, physical environmental factors, and fluid intake with the hydration status of workers. This study was conducted using the cross-sectional design method and used a simple random sampling technique to select 17 respondents and 17 home industries originally derived from 20 respondents and 20 home industries. The research location was on Jalan Banyu Urip Lor X Surabaya. Data were analyzed using cross-tabulation and fisher’s exact test with a confidence level of 95%. The data were collected through interviews, measurements, questionnaires, and verification. The results showed that there was a significant relationship between physical environmental factors, which included temperature (p = 0.002), humidity (p = 0.029), and fluid intake (p = 0.029), with the hydration status of workers. In general, it can be concluded that physical environmental factors and fluid intake are relevant towards the hydration status of workers. Therefore, it is recommended that the workers improve air circulation in the room by adding natural ventilation, an exhaust fan in the kitchen, and are advised to consume enough mineral water while working.Keywords: temperature, humidity, fluid intake, hydration status
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Nichols, Phillip E., Satya S. Jonnalagadda, Christine A. Rosenbloom, and Marvin Trinkaus. "Knowledge, Attitudes, and Behaviors Regarding Hydration and Fluid Replacement of Collegiate Athletes." International Journal of Sport Nutrition and Exercise Metabolism 15, no. 5 (October 2005): 515–27. http://dx.doi.org/10.1123/ijsnem.15.5.515.
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The purpose of this study was to determine collegiate athletes’ knowledge, attitudes, and behaviors concerning hydration and fluid replacement. A survey containing questions pertaining to demographics and knowledge, attitude, and behavior on hydration and fluid replacement was distributed to the athletes during team meetings and practices. A total of 139 out of 171 (81.3%) athletes participated in the study. The mean age of the athletes was 19.8 y. The mean score for knowledge, attitude, and behavior was 13.9 ± 1.8, 9.8 ± 2.2, and 12.4 ± 2.5, respectively, with higher scores indicating positive hydration knowledge, attitudes, and behaviors. Significant positive correlation was observed between knowledge, attitude, and behavior scores (P < 0.05). Significant difference (P < 0.05) was observed in the reported hydration behaviors between skilled (11.79 ± 2.08) and endurance (12.71 ± 2.63) athletes. Most athletes correctly answered the general hydration questions on the survey, but the majority did not correctly answer statements in regards to National Athletic Trainers’ Association (NATA) and the American College of Sports Medicine (ACSM) position stands and lacked knowledge regarding appropriate use of sports drink. The results of this study identify specific areas of education for athletes with regards to hydration.
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Yeargin, Susan W., Megan E. Finn, Lindsey E. Eberman, Matthew J. Gage, Brendon P. McDermott, and Andrew Niemann. "Ad Libitum Fluid Consumption via Self- or External Administration." Journal of Athletic Training 50, no. 1 (January 1, 2015): 51–58. http://dx.doi.org/10.4085/1062-6050-49.3.76.
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Context: During team athletic events, athletic trainers commonly provide fluids with water bottles. When a limited number of water bottles exist, various techniques are used to deliver fluids. Objective: To determine whether fluid delivered via water-bottle administration influenced fluid consumption and hydration status. Design: Crossover study. Setting: Outdoor field (22.2°C ± 3.5°C). Patients or Other Participants: Nineteen participants (14 men, 5 women, age = 30 ± 10 years, height = 176 ± 8 cm, mass = 72.5 ± 10 kg) were recruited from the university and local running clubs. Intervention(s): The independent variable was fluid delivery with 3 levels: self-administration with mouth-to-bottle direct contact (SA-DC), self-administration with no contact between mouth and bottle (SA-NC), and external administration with no contact between the mouth and the bottle (EA-NC). Participants warmed up for 10 minutes before completing 5 exercise stations, after which an ad libitum fluid break was given, for a total of 6 breaks. Main Outcome Measure(s): We measured the fluid variables of total volume consumed, total number of squirts, and average volume per squirt. Hydration status via urine osmolality and body-mass loss, and perceptual variables for thirst and fullness were recorded. We calculated repeated-measures analyses of variance to assess hydration status, fluid variables, and perceptual measures to analyze conditions across time. Results: The total volume consumed for EA-NC was lower than for SA-DC (P = .001) and SA-NC (P = .001). The total number of squirts for SA-DC was lower than for SA-NC (P = .009). The average volume per squirt for EA-NC was lower than for SA-DC (P = .020) and SA-NC (P = .009). Participants arrived (601.0 ± 21.3 mOsm/L) and remained (622.3 ± 38.3 mOsm/L) hydrated, with no difference between conditions (P = .544); however, the EA-NC condition lost more body mass than did the SA-DC condition (P = .001). There was no main effect for condition on thirst (P = .147) or fullness (P = .475). Conclusions: External administration of fluid decreased total volume consumed via a decreased average volume per squirt. The SA-DC method requires fewer squirts within a specific time frame. Fluid breaks every 15 minutes resulted in maintenance of euhydration; however, loss of body mass was influenced by fluid administration. Athletic trainers should avoid external administration to promote positive hydration behaviors. When fluid is self-administered, individual bottles may be the best clinical practice because more volume can be consumed per squirt.
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Maughan, Ronald J., and Susan M. Shirreffs. "Development of Individual Hydration Strategies for Athletes." International Journal of Sport Nutrition and Exercise Metabolism 18, no. 5 (October 2008): 457–72. http://dx.doi.org/10.1123/ijsnem.18.5.457.
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Athletes are encouraged to begin exercise well hydrated and to consume sufficient amounts of appropriate fluids during exercise to limit water and salt deficits. Available evidence suggests that many athletes begin exercise already dehydrated to some degree, and although most fail to drink enough to match sweat losses, some drink too much and a few develop hyponatremia. Some simple advice can help athletes assess their hydration status and develop a personalized hydration strategy that takes account of exercise, environment, and individual needs. Preexercise hydration status can be assessed from urine frequency and volume, with additional information from urine color, specific gravity, or osmolality. Change in hydration during exercise can be estimated from the change in body mass that occurs during a bout of exercise. Sweat rate can be estimated if fluid intake and urinary losses are also measured. Sweat salt losses can be determined by collection and analysis of sweat samples, but athletes losing large amounts of salt are likely to be aware of the taste of salt in sweat and the development of salt crusts on skin and clothing where sweat has evaporated. An appropriate drinking strategy will take account of preexercise hydration status and of fluid, electrolyte, and substrate needs before, during, and after a period of exercise. Strategies will vary greatly between individuals and will also be influenced by environmental conditions, competition regulations, and other factors.
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Micallef, Francesca, Marisa Vella, Alan Sciberras Narmaniya, Glenda Cook, and Juliana Thompson. "An exploration of hydration practices in Maltese residential care homes for older people." Nursing and Residential Care 23, no. 11 (November 2, 2021): 1–12. http://dx.doi.org/10.12968/nrec.2021.23.11.3.
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Background/aims The integral relationship between adequate hydration and good health is widely recognised. Older people with complex needs and frailty can struggle to maintain adequate hydration, with residents in care home settings being at an increased risk of dehydration. The aim of this study was to explore current hydration practices in residential care homes in Malta. Methods An exploratory qualitative approach was adopted to explore staff's views and approaches in supporting residents' hydration. Data was collected via semi-structured, individual and small group interviews with staff from two care homes from the central and southern region of Malta. A process of open coding, followed by axial coding, was used to analyse the data. Peer debriefing was performed throughout, until agreement was reached among the research team about the final themes and sub-themes. Results Three themes emerged from the data: culture of promoting fluid intake; challenges in supporting older people to achieve optimum hydration; hydration practices and approaches. Conclusions A hydration promotion culture was demonstrated through various practices adopted in the care homes. The strong focus on water intake, in response to concerns about consuming sugary beverages, has implications for the promotion of a person-centred approach to hydration care. Inconsistencies in monitoring of fluids and daily recommended targets highlights the importance of policies or guidelines to guide hydration practice. Challenges related to refusal of fluids and language barriers among non-native staff were evident and justify further research is this area.
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Rawat, Rajani, Amit Kaushik, and Ravi Sachan. "Effect of Maternal Oral Hydration Therapy on Maternal and Perinatal Outcome in Isolated Oligohydramnios." Journal of South Asian Federation of Obstetrics and Gynaecology 7, no. 2 (2015): 64–67. http://dx.doi.org/10.5005/jp-journals-10006-1325.
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ABSTRACT Objective To evaluate the effect of maternal oral hydration therapy in 3rd trimester pregnancies with isolated oligohydramnios on amniotic fluid index (AFI) and maternal and perinatal outcome. Materials and methods A prospective study was conducted on 100 pregnant women in 3rd trimester with isolated oligohydramnios. Women were advised to drink 2 liters of fluids orally over 1 hour per day in the form of water, fruit juices, coconut water and to take rest in left lateral position. Amniotic fluid index was re-evaluated by ultrasonography done at 24 hours and then repeated at 48 hours of oral hydration therapy. Difference in prehydration and posthydration AFI was calculated for each selected cases at different intervals. Women were asked to continue the therapy of 2 liters per day orally in addition to routine fluid intake till delivery. All the women were followed till delivery and maternal and perinatal outcome was analyzed. Results The mean AFI increased from 6.23 ± 1.06 cm (pretreatment) to 7.47 ± 0.58 cm at 24 hours (p < 0.001) and to 7.80 ± 1.47 cm at 48 hours of oral hydration therapy (p < 0.001). In women with low AFI, there was increased rate of operative delivery and low Apgar score at birth. There were no perinatal deaths. Conclusion Maternal oral hydration therapy is simple to perform, noninvasive, nonexpensive, east to accept and an effective way of increasing AFI and results in improvement of perinatal outcome and decrease in operative interferences. How to cite this article Rawat R, Garg R, Kaushik A, Sachan R. Effect of Maternal Oral Hydration Therapy on Maternal and Perinatal Outcome in Isolated Oligohydramnios. J South Asian Feder Obst Gynae 2015;7(2):64-67.
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Zhang, Li, Qianqian Wu, Lei Chen, and Jiacong Wang. "Study of a strong inhibitory solid-free drilling fluid." E3S Web of Conferences 352 (2022): 01011. http://dx.doi.org/10.1051/e3sconf/202235201011.
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The study on the problem of hydration and dispersion expansion of shale and the poor high temperature resistance and lubrication performance of mud with soil is carried out. The selection of viscosity enhancer, filter loss reducing agent, lubricant and inhibitor in solid-state drilling fluid was carried out through experiments. The formula of solid-free drilling fluid was 0.2% 1831+1% xanthan gum+1% phenolic resin and 1% sodium benzenesulfonate. The linear expansion rate of bentonite is less than 20%, which shows that the formulation has good inhibition performance. The mud ball in the drilling fluid after 48 h of storage did not undergo hydration expansion, which indicated that the formulation had strong inhibition on the hydration expansion of clay. Finally, after heating the formula in a roller heating furnace at 120 °C for 16 h, the plastic viscosity, dynamic shear force and apparent viscosity of the formula were determined as 14.00 mPa·s, 24.00 Pa and 39.50 mPa·s respectively, while FL (filtration loss) was 17 mL. In conclusion, the strong inhibition solid-phase drilling fluid formula is superior in both the inhibition of hydration expansion and the high temperature resistance of clay.
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Irafasha, Pierre, Malachie Tuyizere, Joselyne Mukantwari, and Lilian Omondi. "Perioperative Fluid Management for Elective Major Surgery Patients at a Teaching Hospital in Rwanda." Rwanda Journal of Medicine and Health Sciences 3, no. 1 (April 14, 2020): 30–39. http://dx.doi.org/10.4314/rjmhs.v3i1.5.
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Background
Every year, over 312 million surgical operations are performed globally. While perioperative goal-directed fluid strategy may reduce postoperative complications among patients undergoing major surgery, poor perioperative fluids management has been linked to adverse postoperative patients’ outcome.
Methods
This study used quantitative prospective design to assess the perioperative fluids management in 133 patients operated in the theatre of University Teaching Hospital of Butare (CHUB). The SPSS 21 was used to analyze the data, Chi-square test was performed to assess the association between fluid administered and patients’ hydration status with an acceptable cutoff at p<0.05.
Results
The findings showed that 108 (81.2%) and 25 (18.8%) participants were in dehydration class A and B before surgery and strongly associated with age, surgeries, type and amount of intraoperative fluids. Participants received RL and NS (67.7%), 2091.73 ml, +803.6 ml and lost 218.42+131.9 ml fluid in average. Postoperatively, 53.4% and 46.6% participants were in dehydration class A and B respectively, strongly associated with type and duration of surgery (P<0.05). All participants fasted more than 6 hours.
Conclusion
The dehydration rate increased intraoperatively in relation to type and duration of surgery and type and amount of fluid administered. Reduced fasting time and effective intraoperative fluid management would improve the patients’ hydration after surgery and postoperative patients’ outcome.
Key words: Major Surgery, Elective Surgery, Perioperative care, Fluid management, patients
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Lichodziejewska-Niemierko, Monika, Michał Chmielewski, Maria Dudziak, Alicja Ryta, and Bolesław Rutkowski. "Hydration Status of Patients Dialyzed with Biocompatible Peritoneal Dialysis Fluids." Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis 36, no. 3 (May 2016): 257–61. http://dx.doi.org/10.3747/pdi.2015.00009.
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Background Biocompatible fluids for peritoneal dialysis (PD) have been introduced to improve dialysis and patient outcome in end-stage renal disease. However, their impact on hydration status (HS), residual renal function (RRF), and dialysis adequacy has been a matter of debate. The aim of the study was to evaluate the influence of a biocompatible dialysis fluid on the HS of prevalent PD patients. Methods The study population consisted of 18 prevalent PD subjects, treated with standard dialysis fluids. At baseline, 9 patients were switched to a biocompatible solution, low in glucose degradation products (GDPs) (Balance; Fresenius Medical Care, Bad Homburg, Germany). Hydration status was assessed through clinical evaluation, laboratory parameters, echocardiography, and bioimpedance spectroscopy over a 24-month observation period. Results During the study period, urine volume decreased similarly in both groups. At the end of the evaluation, there were also no differences in clinical (body weight, edema, blood pressure), laboratory (N-terminal pro-brain natriuretic peptide, NTproBNP), or echocardiography determinants of HS. However, dialysis ultra-filtration decreased in the low-GDP group and, at the end of the study, equaled 929 ± 404 mL, compared with 1,317 ± 363 mL in the standard-fluid subjects ( p = 0.06). Hydration status assessed by bioimpedance spectroscopy was +3.64 ± 2.08 L in the low-GDP patients and +1.47 ± 1.61 L in the controls ( p = 0.03). Conclusions The use of a low-GDP biocompatible dialysis fluid was associated with a tendency to overhydration, probably due to diminished ultrafiltration in prevalent PD patients.
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Cook, Glenda, Philip Hodgson, Juliana Thompson, Lesley Bainbridge, Amy Johnson, and Paul Storey. "Hydration Interventions for older people living in residential and nursing care homes: overview of the literature." British Medical Bulletin 131, no. 1 (September 2019): 71–79. http://dx.doi.org/10.1093/bmb/ldz027.
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Abstract Introduction Care home populations experiencing high levels of multi-morbidity and dementia require support from caregivers to meet their hydration requirements. This article provides an overview of literature related to hydration interventions and highlights gaps in knowledge. Sources of data This paper draws on UK-focused literature from Applied Social Sciences Index and Abstracts (ASSIA), CINAHL, Medline, Proquest Hospital Premium Collection, Cochrane Library and RCN databases on hydration interventions for older people living with multi-morbidity and dementia in care homes. Areas of agreement Fluid intake is too low in care home residents, and no single hydration intervention is effective in addressing the complex problems that older residents present. Areas of controversy There is a lack of consensus about how much fluid an older person should consume daily for optimum health. There is also lack of agreement about what interventions are effective in supporting individuals with complex physical and cognitive problems to achieve daily fluid intake targets. Growing points To improve hydration care for residents, care home teams should be competent in the delivery of hydration care, and work closely with integrated multi-professional healthcare specialists to provide proactive case management. Areas timely for developing research There is a need for understanding of what hydration practices and processes are effective for care home residents and including these in multi-component interventions.