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Author: Grafiati

Published: 7 July 2024

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1

Taylor, Marcus K., Heidemarie K. Laurent, Gerald E. Larson, Mitchell J. Rauh, Melissa D. Hiller Lauby, and Douglas A. Granger. "Neurotrophic Response to Intense Military Stress." Medicine & Science in Sports & Exercise 46 (May 2014): 705. http://dx.doi.org/10.1249/01.mss.0000495592.23886.2a.

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Buskila, Yaffa, and Tamar Chen-Levi. "Intense Teaching Schedule in Israeli Teachers." ATHENS JOURNAL OF EDUCATION 8, no. 3 (February 5, 2021): 329–48. http://dx.doi.org/10.30958/aje.8-3-5.

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The teaching profession is highly stressful. Stress is a negative phenomenon that develops under conditions of uncontrollable, prolonged and increased pressure. In this study, our goal is (a) to investigate teachers' perception of the sources of stress in school in light of the neoliberal reforms and (b) to compare these sources of stress in primary school, middle school and high school teachers. We hypothesize that the demands and the workload to improve scores in standardized tests, increase the need of teachers to take work home. Therefore, home demands may conflict with school demands. Furthermore, the greatest pressure is on elementary and middle school teachers: Early efforts to improve student achievements in the lower grades would result in better-prepared students in high schools. Data about the sources of stress is based on a previous study of Buskila, Buskila, Giris and Ablin (2019) that investigated the connection between the effects of stress on teachers on somatic syndromes. Three hundred and twenty-one public school teachers working in the Ministry of Education (MOE) in Israel participated in the study. Findings of the mean of the entire samples revealed that the highest level of stress was caused by intense teaching schedule with insufficient breaks. The second cause was related to the composition of the students in the class, and the third was home demands conflicting with school demands. In the middle schools, the highest levels of stress are caused by school principals (M=5.98, SD=3.09) and second is in high school (M=5.00, SD=3.33). The highest level of stress caused by the superintendent is on primary school teachers (M=3.97, SD=3.33) and the second are the middle school teachers (M=3.79, SD = 2.95). The lowest stress level was in high school (M=2.68, SD=2.83). Three significance differences of stress were found among primary, middle, and high schools: The school principal is the highest source of pressure in the middle schools (P=.034), and the superintendent causes the highest level of stress in primary schools (P=.006). The third cause was in high school, related to physical school conditions (p=.002). These results are relevant to teachers, educators, and policy makers involved in planning and managing educational strategies and teachers’ schedules. Identifying and preventing the sources of stress can facilitate better teaching conditions, and a more effective and efficient atmosphere in school. Keywords: Stress at school, teachers' stress, causes of stress in school

3

Atzori, Marco, Ricardo Vinuesa, Adrián Lozano-Durán, and Philipp Schlatter. "Intense Reynolds-stress events in turbulent ducts." International Journal of Heat and Fluid Flow 89 (June 2021): 108802. http://dx.doi.org/10.1016/j.ijheatfluidflow.2021.108802.

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4

Gong, Min, Dongzhu Jiang, Ran Liu, Shuming Tian, Haitao Xing, Zhiduan Chen, Rujie Shi, and Hong-Lei Li. "Influence of High-Temperature and Intense Light on the Enzymatic Antioxidant System in Ginger (Zingiber officinale Roscoe) Plantlets." Metabolites 13, no. 9 (September 4, 2023): 992. http://dx.doi.org/10.3390/metabo13090992.

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Environmental stressors such as high temperature and intense light have been shown to have negative effects on plant growth and productivity. To survive in such conditions, plants activate several stress response mechanisms. The synergistic effect of high-temperature and intense light stress has a significant impact on ginger, leading to reduced ginger production. Nevertheless, how ginger responds to this type of stress is not yet fully understood. In this study, we examined the phenotypic changes, malonaldehyde (MDA) content, and the response of four vital enzymes (superoxide dismutase (SOD), catalase (CAT), lipoxygenase (LOX), and nitrate reductase (NR)) in ginger plants subjected to high-temperature and intense light stress. The findings of this study indicate that ginger is vulnerable to high temperature and intense light stress. This is evident from the noticeable curling, yellowing, and wilting of ginger leaves, as well as a decrease in chlorophyll index and an increase in MDA content. Our investigation confirms that ginger plants activate multiple stress response pathways, including the SOD and CAT antioxidant defenses, and adjust their response over time by switching to different pathways. Additionally, we observe that the expression levels of genes involved in different stress response pathways, such as SOD, CAT, LOX, and NR, are differently regulated under stress conditions. These findings offer avenues to explore the stress mechanisms of ginger in response to high temperature and intense light. They also provide interesting information for the choice of genetic material to use in breeding programs for obtaining ginger genotypes capable of withstanding high temperatures and intense light stress.

5

Louvart, Hélène, Stefania Maccari, and Muriel Darnaudéry. "Prenatal stress affects behavioral reactivity to an intense stress in adult female rats." Brain Research 1031, no. 1 (January 2005): 67–73. http://dx.doi.org/10.1016/j.brainres.2004.10.025.

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6

Akiyama, Morito, Chao-Nan Xu, and Kazuhiro Nonaka. "Intense visible light emission from stress-activated ZrO2:Ti." Applied Physics Letters 81, no. 3 (July 15, 2002): 457–59. http://dx.doi.org/10.1063/1.1494463.

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Akiyama, Morito, Keiko Nishikubo, and Kazuhiro Nonaka. "Intense visible light emission from stress-activated SrMgAl6O11:Eu." Applied Physics Letters 83, no. 4 (July 28, 2003): 650–52. http://dx.doi.org/10.1063/1.1594828.

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8

Zhao, Cang, and Yu Qiao. "Fast-condensing nanofoams: Suppressing localization of intense stress waves." Materials Science and Engineering: A 676 (October 2016): 450–62. http://dx.doi.org/10.1016/j.msea.2016.09.021.

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9

Tondato Arantes, Leticia, Bruno Henrique Tondato Arantes, Pedro Rogerio Giongo, Guilherme Zavatti Ceccato, Victor Hugo Moraes, Youlia Kamei Saito, Luiz Fernando Gomes, and Alan Carlos de Oliveira Castro. "COMPORTAMENTO ESPECTRAL E DETECÇÃO DE LARANJEIRAS (Citrus sinensis L. Osbeck) COM ESTRESSE HÍDRICO, POR MEIO DE DRONE." Revista Brasileira de Geografia Física 13, no. 07 (February 1, 2021): 3625. http://dx.doi.org/10.26848/rbgf.v13.07.p3625-3635.

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O Brasil é um dos maiores produtores mundiais de laranja e o maior exportador de suco da fruta, o que destaca a importância do estudo e da melhoria do pomar de citrus. Entretanto, em decorrência dos períodos de seca, ocorre déficit hídrico, consequentemente resultando em perdas de produtividade. Desse modo, surgem novas tecnologias e ferramentas que viabilizam o monitoramento e gerenciamento desse tipo de cultura, de forma rápida e menos onerosa. Nesse sentido, esse trabalho objetivou identificar a melhor banda para a detecção de plantas sem estresse hídrico e com estresse hídrico intenso, bem como o melhor índice de vegetação para o mapeamento dessas áreas, incluindo também a possiblidade de mapear estresse hídrico moderado, por meio de imagens de alta resolução espacial obtidas através de um sensor que opera na faixa do visível, embarcado em um veículo aéreo não tripulado. Foram avaliados diferentes índices de vegetação para a identificação e o mapeamento das regiões e/ou plantas de citrus com estresse hídrico, bem como o comportamento espectral destas plantas que apresentaram estresse hídrico intenso e as que não apresentaram, utilizando as bandas RGB do Phantom 4 Advanced. Das bandas RGB, a resposta espectral da banda do azul apresentou-se como a melhor na identificação de plantas sem e com estresse hídrico intenso. O uso de índices de vegetação melhorou as análises das imagens de alta resolução espacial, principalmente, no que diz respeito a identificação de regiões do pomar que possuem déficit hídrico. Os índices de vegetação mais eficientes na identificação de plantas com estresse hídrico intenso, moderado e sem estresse hídrico foi o IAF, seguido pelos COM, ExR, ExGR, CIVE e TGI. Spectral behavior and detection of orange (Citrus sinensis L. Osbeck) with water stress, through drone use A B S T R A C TBrazil is one of the world's largest orange producers and the largest exporter of fruit juice, which highlights the importance of the study and the improvement of the citrus orchard. However, due to drought periods, there is a water deficit, consequently resulting in losses in productivity. In this way, new technologies and tools emerge that enable the monitoring and management of this type of culture, in a quick and less costly way. In this sense, this work aimed to identify the best band for the detection of plants without water stress and with intense water stress, as well as the best vegetation index for the mapping of these areas, including also the possibility of mapping moderate water stress, through high spatial resolution images obtained through a sensor that operates in the visible range, embedded in an unmanned aerial vehicle. Different vegetation indexes were evaluated for the identification and mapping of regions and / or citrus plants with water stress, as well as the spectral behavior of these plants that presented intense water stress and those that did not, using the RGB bands Phantom 4 Advanced. Of the RGB bands, the spectral response of the blue band was the best in identifying plants without and with intense water stress. The use of vegetation indices improved the analysis of high spatial resolution images, mainly with regard to the identification of regions in the orchard that have water deficit. The most efficient vegetation indexes in the identification of plants with intense, moderate water stress and without water stress was the IAF, followed by COM, ExR, ExGR, CIVE and TGI.Keywords: Precision agriculture, UAV, Remote sensing, Vegetation index.

10

Hallam, Justus, Cole Sanderson, Young Je Sim, David Senchina, Ishrat Sultana, and Marian Kohut. "Toll-like receptor expression is altered by stress of intense physical conditioning (135.28)." Journal of Immunology 182, no. 1_Supplement (April 1, 2009): 135.28. http://dx.doi.org/10.4049/jimmunol.182.supp.135.28.

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Abstract Periods of intense physical training are associated with an increased incidence of infection. We hypothesize that the TLR pathways involved in the initial response to multiple pathogens are compromised during intense physical exercise stress. In order to test this hypothesis, eight male collegiate wrestlers participated in one month of intense physical conditioning stress. Blood was collected at rest both before and after a 1 month period of intense exercise, and after completing a single 90 minute session of exhaustive exercise. TLR receptor pathway expression was assessed by microarray. The results showed that 1 month of intense exercise conditioning decreased expression of genes that may be important in antiviral defense (IFN-alpha, TLR3, PKRKA, SARM1), and inflammatory response (TNFSRF, PTGS2, REL). Ninety minutes of intense exercise decreased IFN-gamma and IRF1, but expression of TLR pathways associated with anti-bacterial defense increased (TLR5, TIRAP, PGLYRP2, LY86). These findings are consistent with epidemiological data suggesting an increased incidence of respiratory viral infections during periods of intense physical exercise stress. The results also implicate several genes important in inflammation, and further research is needed to determine whether these genes play a significant role in the recently reported anti-inflammatory effects of repeated exercise.

11

Hao, C., R. Fan, X. Zhang, L. Wang, W. Chen, and Z. Chen. "Physiological response of Monimopetalum chinense to light stress under habitat fragmentation." Plant, Soil and Environment 56, No. 12 (December 16, 2010): 551–56. http://dx.doi.org/10.17221/41/2009-pse.

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To determine the effect of light stress under fragmental habitat on the physiology, this paper investigated the physiological responses of Monimopetalum chinense with different light intensities in the Xianyu Mountains (Anhui, China). The study showed that both weak and intense light brought about by habitat fragmentation could improve antioxidant enzymes activities, and promote electrical conductivity and malondialdehyde content of M. chinense leaves. However, too strong light could inhibit photosynthesis rates, superoxide dismutase, catalase, and ascorbate peroxidase activities. In addition, the characteristics of leaves were affected by light intensity at the fragmental habitat. Specifically, intense light was disadvantageous to photosynthesis and antioxidant enzymes of the species. Our results suggest that the biodiversity conservation of M. chinense is necessary, and that light intensity should be considered carefully when implementing conservation efforts.  

12

Baron, Robert S. "Arousal, Capacity, and Intense Indoctrination." Personality and Social Psychology Review 4, no. 3 (August 2000): 238–54. http://dx.doi.org/10.1207/s15327957pspr0403_3.

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This article considers the process of intense indoctrination, specifying procedural conditions, internal states, mechanisms of social influence, and key output behaviors associated with extremely manipulative and coercive programs of attitude and value change. Most descriptions of intense indoctrination point out that emotional arousal and stress are integral features of such programs of systematic persuasion. This article focuses on the hypothesis that this arousal, coupled with other features of the indoctrination process, compromise the attentional capacity of indoctrinees and that this impairment of attentional capacity increases the impact of several social influence mechanisms in such settings. The research evidence relevant to this hypothesis is reviewed.

13

Blinova, T. V., L. A. Strakhova, and S. A. Kolesov. "The effect of intense physical exertion on the biochemical parameters of antioxidant protection systems and nitric oxide in swimming athletes." Russian Journal of Occupational Health and Industrial Ecology 1, no. 10 (November 13, 2019): 860–65. http://dx.doi.org/10.31089/1026-9428-2019-59-10-860-865.

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Introduction. Intense physical activity leads to a violation of homeostasis, which is supported by a balanced work of the body’s defense systems against oxidative stress, in particular, antioxidant, thiol disulfide and nitric oxide system. The study of these indicators will improve the mechanisms of adaptation of the human body to physical activity.The aim of the study was to identify the features of changes in antioxidant protection systems and nitric oxide during intense physical activity in athletes-swimmers.Materials and methods. Blood of athletes-swimmers (n=30, age 23,0±2,5 years) in the conditions of intensive physical loadings is investigated. Oxidative stress, total serum antioxidant capacity, glutathione levels and nitric oxide metabolites were studied by photometric biochemical methods.Results. In 73.3% of athletes after intense physical activity remained elevated levels of oxidized glutathione, 30% had a high level of oxidative stress, 26.7% of the level of antioxidant capacity of serum is low, 73.3% was reduced relative to the initial level of the concentration of nitric oxide metabolites.Conclusion. Intense physical activity leads to oxidative stress and disturbances in the antioxidant system of the athlete’s body. With increasing load, the degree of violations increases. The level of oxidative stress increases, the total antioxidant capacity of serum decreases, the functioning of glutathione is disrupted. Integral indicators of oxidative stress, as well as glutathione fractions can be recommended for monitoring the state of oxidative stress.

14

Zakharova, I. N., T. M. Tvorogova, I. I. Pshenichnikova, V. I. Svintsitskaya, and L. L. Stepurina. "Stress and stress-induced disorders in children." Medical Council, no. 11 (July 16, 2018): 110–16. http://dx.doi.org/10.21518/2079-701x-2018-11-110-116.

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Stress is one of the main reasons for the exponential growth of most chronic non-infectious diseases. The stress response is a genetically determined nonspecific adaptive mechanism. However, if it is an overly intense and prolonged, it becomes a risk factor for the pathogenesis of cardiovascular and oncological diseases, immunodeficiencies, digestive tract diseases and other pathological conditions. Studies have shown that magnesium deficiency, which develops against the background of stress, repeatedly intensifies its negative manifestations. Magnesium preparations make up the basis of therapeutic and rehabilitation activities in children experiencing stress. Timely correction of magnesium deficiency can increase the resistance against the action of stressors, neutralize or mitigate their damaging effect, and also prevent the development of stress-induced pathology.

15

Thirumalai, T., S. Viviyan Therasa, EK Elumalai, and E. David. "Intense and exhaustive exercise induce oxidative stress in skeletal muscle." Asian Pacific Journal of Tropical Disease 1, no. 1 (March 2011): 63–66. http://dx.doi.org/10.1016/s2222-1808(11)60016-9.

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16

Li, Dan, Jiamin Lu, Zhuoyi Hu, Jiajian Liang, and Shibin Lin. "Intense Pulsed Light Attenuates Oxidative Stress in Perennial Allergic Conjunctivitis." Photobiomodulation, Photomedicine, and Laser Surgery 41, no. 1 (January 1, 2023): 17–25. http://dx.doi.org/10.1089/photob.2022.0063.

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17

Taylor, Marcus K., Lilianne R. Mujica-Parodi, Genieleah A. Padilla, Amanda E. Markham, Eric G. Potterat, Nausheen Momen, Todd C. Sander, and Gerald E. Larson. "Behavioral predictors of acute stress symptoms during intense military training." Journal of Traumatic Stress 22, no. 3 (June 2009): 212–17. http://dx.doi.org/10.1002/jts.20413.

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18

Souza, Leandro Vagno de, Glauco Vieira Miranda, João Carlos Cardoso Galvão, Lauro José Moreira Guimarães, and Izabel Cristina dos Santos. "Combining ability of maize grain yield under different levels of environmental stress." Pesquisa Agropecuária Brasileira 44, no. 10 (October 2009): 1297–303. http://dx.doi.org/10.1590/s0100-204x2009001000013.

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The objectives of this work were to caracterize the tropical maize germplasm and to compare the combining abilities of maize grain yield under different levels of environmental stress. A diallel was performed among tropical maize cultivars with wide adaptability, whose hybrid combinations were evaluated in two sowing dates, in two years. The significance of the environmental effect emphasized the environmental contrasts. Based on grain yield, the environments were classified as favorable (8,331 kg ha-1), low stress (6,637 kg ha-1), high stress (5,495 kg ha-1), and intense stress (2,443 kg ha-1). None of the genetic effects were significant in favorable and intense stress environments, indicating that there was low germplasm variability under these conditions. In low and high stresses, the specific combining ability effects (SCA) were significant, showing that the nonadditive genetic effects were the most important, and that it is possible to select parent pairs with breeding potential. SCA and grain yield showed significant correlations only between the closer environment pairs like favorable/low stress and high/intense stress. The genetic control of grain yield differed under contrasting stress environments for which maize cultivars with wide adaptability are not adequate.

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Chacón-Vozmediano, Juan L., Jesús Martínez-Gascueña, Francisco J. García-Navarro, and Raimundo Jiménez-Ballesta. "Effects of Water Stress on Vegetative Growth and ‘Merlot’ Grapevine Yield in a Semi-Arid Mediterranean Climate." Horticulturae 6, no. 4 (December 3, 2020): 95. http://dx.doi.org/10.3390/horticulturae6040095.

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Water stress is considered to be the most influential type of abiotic stress to which plants may be exposed. In grapevines (Vitis vinifera L.), it is a common practice to keep plants under water stress at different stages of the season with the aim of reducing yield and improving the composition of the fruit. The objective of this study was to evaluate foliar development and yield of ‘Merlot’ grapevines grown in the field when they are subjected to different levels of water stress in a semi-arid Mediterranean climate. Four treatments with different levels of water stress were applied during two phenological intervals (flowering-veraison and veraison-maturity) to 128 grapevines for a period of two consecutive years. The levels of water stress were none-light, light-moderate, moderate-intense, and intense-intense for the flowering-veraison and veraison-maturity intervals, respectively. The results revealed that the total leaf area, the exposed leaf area, and the yield all decreased as the degree of water stress increased. The weight of the berry was a decisive factor in determining yield. The least restrictive water regime treatment gave the heaviest berries and bunches and, as a result, the highest yields.

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Arsova, Slavica, Nensi Manusheva, Gabriela Kopacheva-Barsova, and Stojan Bajraktarov. "Enduring Personality Changes after Intense Stressful Event: Case Report." Open Access Macedonian Journal of Medical Sciences 4, no. 3 (August 17, 2016): 453–54. http://dx.doi.org/10.3889/oamjms.2016.083.

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BACKGROUND: World statistical data show that a large number of individuals suffer from posttraumatic stress disorder (PTSD) after exposure to the intense traumatic event. PTSD can have a chronic course with enduring changes in the functioning of the person.CASE PRESENTATION: Here we report two adult individuals of different gender and education who were exposed to the extremely severe stressful event after which difficulties in psychological functioning developed. The first case we present is a 46-year-old man, with completed high education, divorced, father of two children, who lives with his parents, and is retired. Disorders appeared 20 years ago when he was exposed to extremely severe stressful events in war circumstances that included captivity, torture, and loss of fellow soldiers. The second case is a 50-year-old female patient, with a university degree, professor of art, married, and mother of two children of whom the son died six years ago. She suffered from disorders after the sudden injury of her son that ended with his death.CONCLUSION: Posttraumatic stress disorder after the intense stress is a risk of development enduring personality changes with serious individual and social consequences.Â

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Frestasya, Laurens, and Reynatha C. A. Pangsibidang. "Purple sweet potato antioxidants for oxidative stress caused by intense physical exercise." Pharmacy Education 24, no. 6 (June 14, 2024): 128–33. http://dx.doi.org/10.46542/pe.2024.246.128133.

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Background: Intense exercise increases ROS and reactive nitrogen species, leading to oxidative stress and potential health issues. Balancing free radical production and antioxidant defence is crucial. Endogenous antioxidants help neutralise ROS, but additional supplementation is required to prevent cell damage. Objective: This literature review explores the potential of purple sweet potato (Ipomoea batatas L.) as an antioxidant source to counteract exercise-induced oxidative stress. Method: Scientific articles from various platforms were collected using keywords such as "Physical exercise," "Oxidative stress," "Purple sweet potato," and "Antioxidant”. Result: Purple sweet potato, rich in anthocyanins and vitamin C, exhibits potent free radical scavenging properties. Consumption of purple sweet potato enhances superoxide dismutase (SOD) levels, reduces lipid peroxidation (MDA), inhibits the NF-kB signalling pathway, and prevents increased heat shock protein 72 (HSP72) expression. These findings suggest that purple sweet potato consumption promotes cellular health and mitigates oxidative stress caused by intense physical exercise. Conclusion: In conclusion, incorporating purple sweet potato into the diet shows promise in countering exercise-induced oxidative stress, promoting overall well-being, and preventing chronic diseases. Further research is needed to fully understand the mechanisms and optimal dosage for combating oxidative stress during rigorous physical training.

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Escalera-Valente, Francisco, Marta E. Alonso, Juan M. Lomillos-Pérez, Vicente R. Gaudioso-Lacasa, Angel J. Alonso, and J. Ramiro González-Montaña. "Blood Biochemical Variables Found in Lidia Cattle after Intense Exercise." Animals 11, no. 10 (September 30, 2021): 2866. http://dx.doi.org/10.3390/ani11102866.

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There are limited published data in the bovine species on blood biological variables in response to intense work or after significant physical exertion. Lidia cattle, in addition to their exercise components, have some behavioral agonistic features that make them more susceptible to stress. The bullfight involves stress and exercise so intense that it causes significant changes in some metabolic variables. The study objective was to evaluate changes in blood biological variables in response to intense exercise and stress. After the fight in the arena, and once the bulls were dead (n = 438), blood samples were taken, and some biochemical and hormonal variables were determined in venous blood. A descriptive analysis was performed using the Statistica 8.0. computer program. The mean (±s.d.) results obtained were: total protein (85.8 ± 10.8 g/dL), albumin (3.74 ± 4.3 g/dL), triglycerides (39.65 ± 0.16 mg/dL), cholesterol (2.44 ± 0.03 mmol/L), glucose (22.2 ± 9.6 mmol/L), uric acid (340 ± 80 µmol/L), creatinine (236.9 ± 0.4 µmol/L), urea (5.93 ± 1.27 mmol/L), LDH (2828 ± 1975 IU/L), CK (6729 ± 10,931 IU/L), AST (495 ± 462 IU/L), ALP (90 ± 33 IU/L), GGT (50 ± 34 IU/L), ALT (59 ± 35 IU/L), cortisol (117.5 ± 46.6 nmol/L), and testosterone (20.2 ± 23.8 nmol/L). Most of the measured variables clearly increased; thus, we found severe hyperglycemia and increases in LDH, AST, GGT, and ALT enzymes, particularly in CK. The increases in all these variables are justified by the mobilization of energy sources, tissue/muscle damage, and dehydration due to continued stress and intense exercise.

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Witzel, Dakota, Suzanne Segerstrom, Maria Kurth, Soyoung Choun, Paris Crosby, and Carolyn Aldwin. "RESILIENCE AND AGE MODIFY INFLUENCES OF STRESS AND POSITIVE EXPERIENCES ON SUBJECTIVE COGNITION." Innovation in Aging 7, Supplement_1 (December 1, 2023): 814. http://dx.doi.org/10.1093/geroni/igad104.2627.

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Abstract The COVID-19 pandemic is a major, chronic, worldwide stressor related to poorer health and well-being, especially among older adults, but less is known about risk and protective factors related to cognitive functioning during this stressful time. This eight-week study of 229 community-dwelling middle-aged and older adults (Mage=71.1; 74% women) examined associations between the intensities of weekly stress and positive experiences on subjective cognitive functioning. We also examined how age and trait resilience modified these associations. Zero-inflated Poisson models revealed a positive association between the intensity of stress and self-reported cognitive difficulties (γ=0.34, SE=0.07), whereas the intensity of positive experiences was associated with fewer difficulties (γ=-0.09, SE=0.03). Age moderated the effect of stress (γ=-0.01, SE=0.002), with the old-old having more subjective cognitive difficulties under more intense stress than the young-old. Resilience modified effects of stress and positive experiences, respectively, on cognition (γ=0.04, SE=0.01 and γ=-0.01, SE=0.01). Those with lower resilience reported more cognitive difficulties under more intense compared to less intense stress; this association was slightly attenuated for people with more resilience. Similar associations emerged between resilience and positive experience intensity. Older age was a risk factor for subjective cognitive difficulties during the COVID-19 pandemic, especially under conditions of high weekly stress, whereas resilience was a protective factor. Although those high in resilience appeared to be more sensitive to cognitive difficulties during more intense positive experiences, they still reported fewer difficulties than those low in resilience. Older adults’ cognitive resilience during the COVID-19 pandemic was heterogeneous and multifactorial.

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MAHADEVAPPA, MANJAPPA, PRASHANTH KULKARNI, and K. S. POORNIMA. "Large right-sided pneumothorax with Takotsubo cardiomyopathy." National Medical Journal of India 35 (February 16, 2023): 278–80. http://dx.doi.org/10.25259/nmji_268_20.

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Patients with left-sided pneumothorax presenting with electrocardiogram (ECG) changes resembling acute coronary syndrome (ACS) have been reported in the literature. Takotsubo cardiomyopathy (TCM) occurs predominantly in post-menopausal women with underlying intense emotional or physical stress. However, as this case report shows, it can complicate any acute illness leading to intense stress. We report a rare combination of ECG changes mimicking ACS in a man with a large right-sided pneumothorax and TCM.

25

Okafor, Vincent Chinedum, Peter E. Ogunoh, and Ogochukwu C. Okechukwu. "Finite Element Analysis of Fiber Cement Corrugated Roofing Sheet under Bending." European Journal of Engineering Research and Science 5, no. 8 (August 31, 2020): 955–57. http://dx.doi.org/10.24018/ejers.2020.5.8.794.

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The study presents a numerical model for evaluation of the stresses in corrugated sheets under bending. The numerical analysis was performed from a three dimensional finite element model. From the analysis, the most intense tensional stress occurs in the trough and bottom surface of the corrugated sheet. While the most intense value of compressive stress occur in the crest and top surface of the sheet. Based on the principal stress contour diagram, the researcher also observed that the maximum uniformly distributed load carrying capacity of the fiber-cement corrugated sheet under bending, considering the linear material properties is 710N.

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Okafor, Vincent Chinedum, Peter E. Ogunoh, and Ogochukwu C. Okechukwu. "Finite Element Analysis of Fiber Cement Corrugated Roofing Sheet under Bending." European Journal of Engineering and Technology Research 5, no. 8 (August 31, 2020): 955–57. http://dx.doi.org/10.24018/ejeng.2020.5.8.794.

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The study presents a numerical model for evaluation of the stresses in corrugated sheets under bending. The numerical analysis was performed from a three dimensional finite element model. From the analysis, the most intense tensional stress occurs in the trough and bottom surface of the corrugated sheet. While the most intense value of compressive stress occur in the crest and top surface of the sheet. Based on the principal stress contour diagram, the researcher also observed that the maximum uniformly distributed load carrying capacity of the fiber-cement corrugated sheet under bending, considering the linear material properties is 710N.

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Kim, Hwi Jun, So Yeon Oh, Doo Woong Lee, Junhyun Kwon, and Eun-Cheol Park. "The Effects of Intense Physical Activity on Stress in Adolescents: Findings from Korea Youth Risk Behavior Web-Based Survey (2015–2017)." International Journal of Environmental Research and Public Health 16, no. 10 (May 27, 2019): 1870. http://dx.doi.org/10.3390/ijerph16101870.

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The purpose of this study was to investigate the association between intense physical activity and stress in Korean adolescents. The study used data from the Korea Youth Risk Behavior Web-Based Survey (KYRBWS), 2015–2017, that included 170,359 responses from Korean adolescents. Intense activity and stress were measured by self-diagnosis. Additionally, the chi-square test and multiple logistic regression analyses were used. It was revealed that 78.9% of Korean adolescents were exposed to stress. Students who engaged in physical activity more than five times per week were less likely to be stressed than those who did not (boys odds ratio (OR): 0.79, confidence interval (CI): 0.78–0.80, p for trend: <0.0001; girls OR: 0.77, CI: 0.75–0.79, p for trend: <0.0001). The results indicated the same tendency among both boys and girls. The results of subgroup analysis revealed that students living with relatives or in childcare facilities were more likely to experience stress if they had insufficient exercise. In addition, the results confirmed that the probability of suicidal ideation increased as the frequency of exercise decreased. This study suggests that intense physical activity in Korean adolescents has a positive effect on stress management in both boys and girls. Hence, physical activity should be encouraged and implemented for managing stress.

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Matar, Amany, May EL Samahy, Samah Hassen, and Nashwa EL-Khazragy. "EFFECT OF INTENSE PULSED LIGHT ON OXIDATIVE STRESS IN ACNE VULGARIS." Journal of Recent Advances in Medicine 1, no. 1 (March 1, 2020): 14–19. http://dx.doi.org/10.21608/jram.2019.14041.1014.

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Matar, Amany, May EL Samahy, Samah Hassen, and Nashwa EL-Khazragy. "EFFECT OF INTENSE PULSED LIGHT ON OXIDATIVE STRESS IN ACNE VULGARIS." Journal of Recent Advances in Medicine 1, no. 1 (July 27, 2019): 1–7. http://dx.doi.org/10.21608/jram.2019.42517.

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Bugos, Jennifer A., Simran Kochar, and Nathan Maxfield. "Intense piano training on self-efficacy and physiological stress in aging." Psychology of Music 44, no. 4 (March 31, 2015): 611–24. http://dx.doi.org/10.1177/0305735615577250.

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Hill, Jonathan, Jennifer Smith, Drewe Ferguson, Guillermo Jauregui, Martín Panarace, and Jonathan Hill. "INTENSE BUT SHORT TERM STRESS FOLLOWING CONCEPTION ALTERS OVINE FETAL DEVELOPMENT." Biology of Reproduction 77, Suppl_1 (July 1, 2007): 149. http://dx.doi.org/10.1093/biolreprod/77.s1.149.

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Taylor, Marcus K., Michael Stone, Heidemarie K. Laurent, Mitchell J. Rauh, and Douglas A. Granger. "Neuroprotective–neurotrophic effect of endogenous dehydroepiandrosterone sulfate during intense stress exposure." Steroids 87 (September 2014): 54–58. http://dx.doi.org/10.1016/j.steroids.2014.05.011.

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Teixeira, Angélica M., Patrícia Reckziegel, Liz Müller, Romaiana P. Pereira, Daniel H. Roos, João B. T. Rocha, and Marilise E. Bürger. "Intense exercise potentiates oxidative stress in striatum of reserpine-treated animals." Pharmacology Biochemistry and Behavior 92, no. 2 (April 2009): 231–35. http://dx.doi.org/10.1016/j.pbb.2008.11.015.

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Rosa, Eloi F., Shirley Takahashi, Jeannine Aboulafia, Viviane L. A. Nouailhetas, and Maria G. M. Oliveira. "Oxidative Stress Induced by Intense and Exhaustive Exercise Impairs Murine Cognitive Function." Journal of Neurophysiology 98, no. 3 (September 2007): 1820–26. http://dx.doi.org/10.1152/jn.01158.2006.

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It has been shown that exercise is helpful against brain disorders. However, this may not be true for intense exercise (IE). Because it is easy to misadjust exercise intensity with physical condition, it is essential to know the effects of IE on cognitive process because it may have important consequences on people skills and work skills. We investigated the effects of IE on male C57Bl/6 mice, 3-mo-old, undergoing 10 days of intense and exhaustive running program on cognition and its possible relationship with brain oxidative stress. Cognition was evaluated by three different cognitive tests: passive avoidance task, contextual fear conditioning, and tone fear conditioning, performed 24 h after the last exercise session. Brain oxidative stress was evaluated by lipid peroxidation and protein oxidation. There was a remarkable memory reduction of exercised animals in comparison with the control group, associated with increase in the brain oxidative stress, with no alterations in shock sensitivity, locomotion and anxiety parameters. Concurrent vitamin C and E supplementation fully prevented the memory decrement induced by IE and partially recovered both the increased the brain lipid peroxidation and the protein oxidation. In conclusion, IE-induces a high index of brain oxidative stress and impairs memory in murine model that was prevented by vitamin C and E supplementation.

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İPEK, Emrah, Erkmen Tuğrul EPİKMEN, Çağatay NUHAY, and Recai TUNCA. "Intense exercise stress may trigger Corynebacterium kutscheri infection in Sprague-Dawley rats." Mehmet Akif Ersoy Üniversitesi Veteriner Fakültesi Dergisi 8, no. 2 (June 9, 2023): 136–44. http://dx.doi.org/10.24880/maeuvfd.1249794.

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In this study, Corynebacterium kutscheri infection was reported in Sprague-Dawley rats that were stressed due to intense exercise during an experimental study. Weight loss, indifference to the environment, fluffy feathers, and hunched posture were observed in affected rats. The lungs contained numerous, randomly distributed, variably sized, slightly raised, cream-colored caseopurulent foci. There were occasional weak adhesions between the lung lobes and the adjacent costal pleura. Multifocal to coalescing necro-suppurative pneumonia with intralesional scattered large colonies of bacteria was observed histopathologically. Adjacent in the pulmonary parenchyma, interalveolar hypercellularity, type II pneumocyte hyperplasia, fibrinonecrotic vasculitis, and pleuritis were observed. Brown-Breen staining revealed gram-positive cocobacilli in the lesion areas. Furthermore, cardiac lesions in which the atria were more severely affected than the ventricles were identified. This lesion was characterized by thickening of the epicardium with intense infiltrates of macrophages admixed with scattered neutrophils. In severely affected rats, this lesion was also involved to the underlying myocardium. Bacterial culture yielded positive growth for C. kutsheri from the lesioned organ. Polymerase chain reaction was used to confirm the presence of genetic material for C. kutscheri. As a result, it was revealed that Sprague-Dawley rats were infected with C. kutscheri due to intense exercise stress. Periodic controls of C. kutscheri have been suggested in units where experimental animals are raised, both because of its negative effects on the results of the studies to be conducted and because of its zoonotic nature.

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Kaibyshev, Rustam, Elena Avtokratova, and O. S. Sitdikov. "Mechanical Properties of an Al-Mg-Sc Alloy Subjected to Intense Plastic Straining." Materials Science Forum 638-642 (January 2010): 1952–58. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.1952.

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Effect of intense plastic straining on rollability and service properties of an Al-6%Mg-0.3%Sc alloy was examined. Ultrafine-grained structure (UFG) was produced by equal-channel angular pressing (ECAP) to a strain of 8 at a temperature of 325oC. The formation of UFG structure resulted in increase in the yield stress from 223 MPa to 285 MPa and ultimate stress from 350 MPa to 389 MPa in comparison with initial hot extruded condition. Total elongation slightly decreased from 33% to 29%. After ECAP, the material was subjected to cold and isothermal warm rolling. The formation of UFG structure resulted in enhanced rollability of the present alloy at room temperature. Cold rolling with high reduction provides the development of heavily deformed microstructure with high dislocation density, while the isothermal warm rolling does not remarkably affect the microstructure produced by ECAP. The mechanical properties after ECAP and ECAP with subsequent isothermal rolling were roughly similar. In contrast, cold rolling to the same strain resulted in significant increase of yield stress (495 MPa) and ultimate stress (536 MPa). Total elongation attained was 13%.

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Sist, Paola, and Ranieri Urbani. "Non-invasive approach for the assessment of oxidative stress after intense judo activities." Scientific Journal of Sport and Performance 1, no. 3 (September 22, 2022): 204–19. http://dx.doi.org/10.55860/wmaw9421.

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Oxidative stress induced by physical activity has received much attention in recent years due to numerous research papers. Physical activities (aerobic, anaerobic and resistance training) lead to an increased production of highly oxidative substances (RONS, both oxygen and nitrogen containing radicals) and this effect depends mainly on the intensity of muscular work. The combination of anaerobic and aerobic energy systems, as seen in judoka, provides more pathways for free radical production than single exercise training. The purpose of this study was to investigate the use of a non-invasive, simple battery to assess and monitor oxidative stress in judo athletes to better characterize the oxidative stress response to anaerobic and aerobic incremental exercise typical of the judo discipline.

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Jurcău, Ramona, Ioana Jurcău, Nicolae Colceriu, and Călin Gîrlea. "Phytotherapeutic modulation of the impact of facial expressions in intense physical stress." Palestrica Of The Third Millennium - Civilization And Sport 19, no. 4 (December 11, 2018): 208–11. http://dx.doi.org/10.26659/pm3.2018.19.4.208.

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Patel, Dinesh K., Sandeep Mittal, Nimisha Tiwari, Anil K. Maurya, Dhirendra Singh, Alok K. Pandey, and Anirban Pal. "Plasmodium–Salmonella Coinfection Induces Intense Inflammatory Response, Oxidative Stress, and Liver Damage." SHOCK 50, no. 6 (December 2018): 741–49. http://dx.doi.org/10.1097/shk.0000000000001111.

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St. Jacques, Peggy L., Anne Botzung, Amanda Miles, and David C. Rubin. "Functional neuroimaging of emotionally intense autobiographical memories in post-traumatic stress disorder." Journal of Psychiatric Research 45, no. 5 (May 2011): 630–37. http://dx.doi.org/10.1016/j.jpsychires.2010.10.011.

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Schilcher, Jörg, Magnus Bernhardsson, and Per Aspenberg. "Chronic anterior tibial stress fractures in athletes: No crack but intense remodeling." Scandinavian Journal of Medicine & Science in Sports 29, no. 10 (June 2, 2019): 1521–28. http://dx.doi.org/10.1111/sms.13466.

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Rouleau, Erica, Teresa Barabe, and Adrian Blow. "Creating Structure in a Time of Intense Stress: Treating Intimate Partner Violence." Journal of Couple & Relationship Therapy 18, no. 2 (January 22, 2019): 148–69. http://dx.doi.org/10.1080/15332691.2018.1505573.

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Jurcău, Ramona, Ioana Jurcau, Nicolae Colceriu, and Vasile Bogdan. "Influence of Passiflora product on stress, induced by intense short physical effort." European Journal of Integrative Medicine 7 (September 2015): 11. http://dx.doi.org/10.1016/j.eujim.2015.09.032.

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Chacón-Vozmediano, Juan L., Jesús Martínez-Gascueña, Esteban García-Romero, Sergio Gómez-Alonso, Francisco J. García-Navarro, and Raimundo Jiménez-Ballesta. "Effects of Water Stress on the Phenolic Compounds of ‘Merlot’ Grapes in a Semi-Arid Mediterranean Climate." Horticulturae 7, no. 7 (June 22, 2021): 161. http://dx.doi.org/10.3390/horticulturae7070161.

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Of all the abiotic stress types to which plants grown in fields are exposed, the most influential is water stress. It is well accepted that adopting controlled deficit irrigation strategies during the growing season has beneficial effects on the chemical compositions of grapes and red wines. However, there is a discrepancy in the timing, intensity and duration of deficit. This study aimed to evaluate the changes in phenolic composition of ‘merlot’ cultivar grapes when subjected to different levels of water stress in a semi-arid Mediterranean climate. Four treatments with different water stress levels were applied within two phenological intervals (flowering-veraison, veraison-maturity) to 128 grapevines for two consecutive years. The water stress levels for Treatments 1, 2, 3 and 4 were: no-light, light-moderate, moderate-intense and intense for the flowering-veraison and veraison-maturity intervals, respectively. Water stress distinctly affected the phenolic compounds in skin and seeds. The concentrations of flavan-3-ols and total polyphenols were much higher in seeds than in skin, and in both fractions, tannins are the major compounds.

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Darnaudéry, M., H. Louvart, L. Defrance, M. Léonhardt, S. Morley-Fletcher, S. H. Gruber, G. Galietta, A. A. Mathé, and S. Maccari. "Impact of an intense stress on ethanol consumption in female rats characterized by their pre-stress preference: Modulation by prenatal stress." Brain Research 1131 (February 2007): 181–86. http://dx.doi.org/10.1016/j.brainres.2006.11.005.

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Gilham, I. D., and B. I. Baker. "A black background facilitates the response to stress in teleosts." Journal of Endocrinology 105, no. 1 (April 1985): 99–105. http://dx.doi.org/10.1677/joe.0.1050099.

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ABSTRACT This work examines the difference in responsiveness to stress which characterizes fish adapted to white and black backgrounds. Trout were maintained in black or white tanks for 2 weeks and then subjected to intermittent intense or moderate noise stress for periods between 1 h and 5 days, or to the stress of being injected daily with a large volume of liquid for 3 days. Plasma cortisol concentrations increased more readily and to a greater extent in fish from black tanks in response to moderate stress or brief intense stress. Dexamethasone suppressed the stress-induced rise of cortisol in white-adapted fish but was only partially effective in trout from black backgrounds. These differences in plasma cortisol between black- and white-adapted fish can be related to the different titres of plasma ACTH, apparently derived from the pars distalis. Removal of the neurointermediate lobe (NIL) from black-adapted eels markedly depressed the normal rise in plasma cortisol elicited by noise stress. It is suggested that products from the NIL may modulate the stress response of the hypothalamo-pituitary axis although other routes through which background colour could affect the pituitary responsiveness to stress are also considered. In several cases, stress also enhanced the secretion of MSH from the NIL. J. Endocr. (1985) 105, 99–105

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Jarvis, Jonathan A., Allison W. Corbett, Jared D. Thorpe, and Mikaela J. Dufur. "Too Much of a Good Thing: Social Capital and Academic Stress in South Korea." Social Sciences 9, no. 11 (October 23, 2020): 187. http://dx.doi.org/10.3390/socsci9110187.

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In intense academic environments such as in South Korea, students experience extreme levels of academic stress. This stress peaks as students prepare for the college entrance exam in the final year of high school. Stress is associated with a host of negative outcomes, and academic stress is the leading cause of suicidal ideation among youth in South Korea. Research suggests that in high-stress contexts such as this, social capital can improve academic success and mental health, while reducing risky or deviant behaviors. However, this research has predominantly focused on Western contexts. Because of the unique intensity of educational pursuits and intense investment in education by parents, South Korea provides a compelling case for research on the effects of family and school social capital on youth academic stress. Using data from the Korea Youth Panel Survey (N = 2753), we find that particular components of family and school social capital can both reduce and exacerbate academic stress. While measures of closeness and connection to parents reduced academic stress, school social capital had a limited impact on academic stress. Furthermore, there may be a limit to the effectiveness of social capital to help with academic stress before it becomes too much of a good thing.

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Pelliccia, Francesco, Amalia Morgantini, and Riccardo Rosati. "Takotsubo Syndrome: From Bench to Bedside and Bedside to Bench." Journal of Clinical Medicine 11, no. 16 (August 11, 2022): 4704. http://dx.doi.org/10.3390/jcm11164704.

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Tang, Yuhan, Juan Li, Chao Gao, Yanyan Xu, Yanyan Li, Xiao Yu, Jing Wang, Liegang Liu, and Ping Yao. "Hepatoprotective Effect of Quercetin on Endoplasmic Reticulum Stress and Inflammation after Intense Exercise in Mice through Phosphoinositide 3-Kinase and Nuclear Factor-Kappa B." Oxidative Medicine and Cellular Longevity 2016 (2016): 1–12. http://dx.doi.org/10.1155/2016/8696587.

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The mechanisms underlying intense exercise-induced liver damage and its potential treatments remain unclear. We explored the hepatoprotection and mechanisms of quercetin, a naturally occurring flavonoid, in strenuous exercise-derived endoplasmic reticulum stress (ERS) and inflammation. Intense exercise (28 m/min at a 5° slope for 90 min) resulted in the leakage of aminotransferases in the BALB/C mice. The hepatic ultrastructural malformations and oxidative stress levels were attenuated by quercetin (100 mg/kg·bw). Intense exercise and thapsigargin- (Tg-) induced ERS (glucose-regulated protein 78, GRP78) and inflammatory cytokines levels (IL-6 and TNF-α) were decreased with quercetin. Furthermore, quercetin resulted in phosphoinositide 3-kinase (PI3K) induction, Ca2+restoration, and blockade of the activities of Jun N-terminal kinase (JNK), activating transcription factor 6 (ATF6) and especially NF-κB (p65 and p50 nuclear translocation). A PI3K inhibitor abrogated the protection of quercetin on ERS and inflammation of mouse hepatocytes. SP600125 (JNK inhibitor), AEBSF (ATF6 inhibitor), and especially PDTC (NF-κB inhibitor) enhanced the quercetin-induced protection against Tg stimulation. Collectively, intense exercise-induced ERS and inflammation were attenuated by quercetin. PI3K/Akt activation and JNK, ATF6, and especially NF-κB suppression were involved in the protection. Our results highlight a novel preventive strategy for treating ERS and inflammation-mediated liver damage induced by intense exercise using natural phytochemicals.

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Khisamova, A. A., and O. A. Gizinger. "Curcuma longa extract reduces the risk of oxidative stress during intense physical exertion." Terapevt (General Physician), no. 9 (August 15, 2020): 43–49. http://dx.doi.org/10.33920/med-12-2009-04.

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Increased physical exertion is a catalyst for oxidative stress and the production of reactive oxygen species, which entails irreversible processes in the body, leading to chronic diseases and disability. This article contains a literature review of studies that prove the effect of the antioxidant properties of Curcuma longa on cells under oxidative stress. To search for data, a wide range of literature and databases was explored: Pubmed, Google.Scholar, and Embase.