Study on human thermal comfort for indoor medium and high intensity exercises

Taking the indoor sports stadium of a university in Beijing as the research site, and the universitys varsity volleyball players as the research subject, the thermal comfort of the research subject in the active state and the non-active state is studied by means of objective environmental parameter testing and subjective questionnaire research. The results show that the neutral operating temperature of the active sportsmen and the non-active sportsmen is 20.7 ℃ and 23.5 ℃, respectively. The thermal sensitivity of the active sportsmen is 0.33 ℃-1, which is lower than that of the non-active sportsmen (0.47 ℃-1). The concept of “optimal thermal temperature for athletic performance” is proposed, and it is 23.8 ℃, which is higher than the neutral operating temperature of 20.7 ℃ and the preferred temperature for athletic performance of 20.9 ℃ by about 3 ℃. Combining sports and energy saving considerations, the design operating temperature of the sports stadium should be taken according to the optimal thermal temperature for athletic performance of about 23.8 ℃.