نتایج جستجو برای: acute heat stress

تعداد نتایج: 1091345  

2014
Triin Kaldur Jaak Kals Vahur Ööpik Mihkel Zilmer Kersti Zilmer Jaan Eha Eve Unt

BACKGROUND The aim was to determine the effect of heat acclimation (HA) on oxidative stress (OxS) and inflammation in resting conditions and on the response pattern of these parameters to exhausting endurance exercise. METHODS Parameters of OxS and inflammation were measured in non-heat-acclimated status (NHAS) and after a 10-day HA program (i.e., in heat-acclimated status; HAS) both at basel...

Journal: :Antioxidants & redox signaling 2008
Akos Putics Eszter Mária Végh Péter Csermely Csaba Soti

Molecular chaperones play key roles in protein quality control, signal transduction, proliferation, and cell death, and confer cytoprotection and assure survival after environmental stress. The heat-shock response is implicated in a variety of conditions including ischemic diseases, infection and immunity, neurodegeneration, and aging. Physiologic and pharmacologic chaperone inducers were shown...

2011
Rakesh Kumar Sinha Amit Kumar Ray

The recent literatures indicate that central nervous system (CNS) is highly vulnerable to systemic hyperthermia induced by whole body heating on conscious animals. In the present study, cerebral electrical activity or EEG (electroencephalogram) following exposure to high environmental heat has been studied in moving rats. Rats were divided into three group (i) acute heat stress-subjected to a s...

Journal: :jundishapur journal of health sciences 0
habibollah dehghan assistant professor, department of occupational health engineering, school of health, isfahan medical sciences university, isfahan,ir iran; assistant professor, department of occupational health engineering, school of health, isfahan medical sciences university, isfahan,ir iran vajiheh mobinyzadeh student research center, school of health, isfahan medical sciences university, isfahan, ir iran peymaneh habibi department of occupational health engineering, school of health, isfahan university of medical sciences, isfahan, ir iran

conclusions the present study showed that heat stress had a negative effect on job satisfaction; also there were no significant effects on job stress and job performance. results the results showed that job satisfaction had a negative correlation with wbgt index (r = -0.42, p < 0.001) and hssi (r = -0.49, p < 0.001). also, there was no statistical correlation among occupational stress and job p...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2014
R M Brothers Redi Pecini M Dalsgaard Morten Bundgaard-Nielsen Thad E Wilson Niels H Secher Craig G Crandall

Volume loading normalizes tolerance to a simulated hemorrhagic challenge in heat-stressed individuals, relative to when these individuals are thermoneutral. The mechanism(s) by which this occurs is unknown. This project tested two unique hypotheses; that is, the elevation of central blood volume via volume loading while heat stressed would 1) increase indices of left ventricular diastolic funct...

2014
Yuki Tamura Yutaka Matsunaga Hiroyuki Masuda Yumiko Takahashi Yuki Takahashi Shin Terada Daisuke Hoshino Hideo Hatta

21 A recent study demonstrated that heat stress induces mitochondrial biogenesis in C2C12 22 myotubes, thereby implying that heat stress may be an effective treatment to enhance 23 endurance training-induced mitochondrial adaptations in skeletal muscle. However, 24 whether heat stress actually induces mitochondrial adaptations in skeletal muscle in vivo 25 is unclear. We herein report the novel...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2014
Yuki Tamura Yutaka Matsunaga Hiroyuki Masuda Yumiko Takahashi Yuki Takahashi Shin Terada Daisuke Hoshino Hideo Hatta

A recent study demonstrated that heat stress induces mitochondrial biogenesis in C2C12 myotubes, thereby implying that heat stress may be an effective treatment to enhance endurance training-induced mitochondrial adaptations in skeletal muscle. However, whether heat stress actually induces mitochondrial adaptations in skeletal muscle in vivo is unclear. In the present study, we report the novel...

Journal: :International journal of biometeorology 2005
T M Brown-Brandl R A Eigenberg G L Hahn J A Nienaber T L Mader D E Spiers A M Parkhurst

Heat stress in feedlot cattle causes reduced performance, and in the most severe cases, death of the animals, thus causing the loss of millions of dollars in revenue to the cattle industry. A study was designed to evaluate dynamics of thermoregulation and feeding activities when feeder cattle were exposed to simulated heat waves, in comparison with repeated sinusoidal hot and thermoneutral envi...

Journal: :iranian journal of psychiatry 0
abass abolghasemi department of psychology, university of mohaghegh ardabili university of mohaghegh ardebili, ardabil, iran fereshteh bakhshian department of psychology, university of mohaghegh ardabili university of mohaghegh ardebili, ardabil, iran mohammad narimani department of psychology, university of mohaghegh ardabili university of mohaghegh ardebili, ardabil, iran

objective: the purpose of the present study was to compare response inhibition and cognitive appraisal in clients with acute stress disorder, clients with posttraumatic stress disorder, and normal individuals . method:  this  was a comparative study. the sample consisted of 40 clients with acute stress disorder, 40 patients with posttraumatic stress disorder, and 40 normal individuals from maza...

2011
Carly D. Kenkel Galina Aglyamova Ada Alamaru Ranjeet Bhagooli Roxana Capper Ross Cunning Amanda deVillers Joshua A. Haslun Laetitia Hédouin Shashank Keshavmurthy Kristin A. Kuehl Huda Mahmoud Elizabeth S. McGinty Phanor H. Montoya-Maya Caroline V. Palmer Raffaella Pantile Juan A. Sánchez Tom Schils Rachel N. Silverstein Logan B. Squiers Pei-Ciao Tang Tamar L. Goulet Mikhail V. Matz

Coral reefs are declining worldwide due to increased incidence of climate-induced coral bleaching, which will have widespread biodiversity and economic impacts. A simple method to measure the sub-bleaching level of heat-light stress experienced by corals would greatly inform reef management practices by making it possible to assess the distribution of bleaching risks among individual reef sites...

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