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Body Temperature Regulation During Exercise Training

  • Kazunobu OkazakiEmail author
Chapter

Abstract

Physical work and exercise in the heat cause early exhaustion and heat-related illnesses compared with cooler conditions, and the incidence of the disorders is associated with intensity of activity and ambient conditions. Thermoregulatory function is critical during working in the heat, which is affected by individual somatotype, fitness level, and physiological status. Exercise-induced decrease in plasma volume (PV) and elevation in plasma osmolality attenuate heat dissipative responses, skin blood flow, and sweating responses to an increased core temperature during exercise in a hot environment; furthermore, these responses are exacerbated with thermal dehydration. Aerobic exercise training as well as thermal acclimation improves thermoregulatory responses which is associated with exercise-induced increase in PV. Thermoregulatory responses are reduced with biological aging, which would be also improved after exercise training accompanied with an improved maximal oxygen consumption rate, although the improvement is limited in elderly persons relative to young counterparts. Post-exercise protein and carbohydrate intake during training period accelerates exercise training-induced PV expansion and therefore thermoregulatory adaptations both in young and elderly persons (170 wards).

Keywords

Thermoregulation Sweat rate Skin blood flow Plasma volume Aging 

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Copyright information

© Springer Japan 2016

Authors and Affiliations

  1. 1.Research Center for Urban Health and SportsOsaka City UniversitySumiyoshiJapan
  2. 2.Department of Environmental Physiology for ExerciseOsaka City University Graduate School of MedicineSumiyoshiJapan

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