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The effect of dietary supplements on core temperature and sweating responses in hot environmental conditions: a meta-analysis and meta-regression.
Am J Physiol Regul Integr Comp Physiol
January 2025
A-STEM Centre, Faculty of Science and Engineering, Swansea University, Swansea, UK.
Dietary supplements are widely used among individuals exposed to hot environments, but whether their consumption confers any thermoregulatory effect is unclear. Therefore, we systematically evaluated the effect of dietary supplementation on key aspects of thermoregulation (core temperature [T] and sweating responses) in the heat. Three databases were searched in April 2024.
View Article and Find Full Text PDFEffects of 24-h sleep deprivation on whole-body heat exchange in young men during exercise in the heat.
Eur J Appl Physiol
January 2025
Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, 125 University, Montpetit Hall, Room 367, Ottawa, ON, Canada.
Sleep deprivation has been associated with impaired thermoregulatory function. However, whether these impairments translate to changes in whole-body heat exchange during exercise-heat stress remains unknown. Therefore, following either a night of normal sleep or 24 h of sleep deprivation, 10 young men (mean (SD): 23 (3) years) completed three 30-min bouts of semi-recumbent cycling at increasing fixed rates of metabolic heat production (150, 200, 250 W/m), each separated by a 15-min rest in dry heat (40 °C, ~ 13% relative humidity).
View Article and Find Full Text PDFSingle and combined effects of environmental heat stress and physical exercise on thermoregulation, executive function, and cerebral oxygenation.
J Therm Biol
January 2025
School of Exercise and Health, Shanghai University of Sport, Shanghai, 200438, China. Electronic address:
This study investigated the single and combined effects of environmental heat stress and physical exercise on executive function (EF) performance, prefrontal cortex oxygenation, thermoregulatory responses and subjective perceptions. Sixteen subjects participated in four experimental sessions: two under moderate environmental conditions (23 °C), with and without physical exercise (R23, E23), and two under hot environmental conditions (35 °C), with and without physical exercise (R35, E35). In each session, participants completed EF tasks before and after 1 h of passive rest or 45 min of moderate-intensity cycling followed by 15 min of rest.
View Article and Find Full Text PDFSquash in Los Angeles: Heat Strain and Performance Considerations at the 2028 Olympic Games.
Int J Sports Physiol Perform
January 2025
Department of Sport, Physical Education and Health, Hong Kong Baptist University, Hong Kong.
Background: The Los Angeles 2028 Olympics will mark the debut of squash, a high-intensity sport characterized by repeated efforts, posing potential thermoregulatory challenges. The demanding nature of squash results in substantial metabolic heat production, with consequential heat strain exacerbated by the indoor environment of squash courts, where low to moderate evaporative potential limits effective cooling. Players often experience increased body-heat storage and thermal strain, with muscle cramps (an early warning sign of more severe heat-related illnesses) commonly observed during tournaments.
View Article and Find Full Text PDFPassive Heat Therapy for Cardiovascular Disease: Current Evidence and Future Directions.
Appl Physiol Nutr Metab
January 2025
Griffith University, School of Health Sciences, Southport, Queensland, Australia;
Passive heat therapy is gaining popularity as an intervention to promote cardiovascular, physiological, and to a lesser degree, thermoregulatory, adaptations in patients with cardiovascular disease. Despite this, the efficacy of heat therapy to elicit these adaptations remains unknown. We searched 5 databases for original research, screening 2,913 studies and identifying 18 eligible studies.
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