2020 Volume 5 Issue 2 Pages 185-189
To prevent exertional heat illness in university students in physical education classes, we investigated environmental conditions and physiological indicators such as body temperature and sweating during classes in a hot environment.
The physical education classes conducted under a hot environment conferred a high risk of exer-tional heat illness because wet-bulb globe temperatures (WBGT) increase rapidly from late June. Water intake and sweat rate were significantly higher in the classes conducted when the WBGT were high than in the classes conducted when the WBGT were low. However, no significant differences were found in the amount of dehydration, dehydration rate, and body temperature elevation. These results suggest that the amount of dehydration and elevation of body temperature were kept constant with sufficient hydration with free drinking water and evaporative heat dissipation by sweating, despite changes in environmental conditions.
