抄録
Maximal oxygen uptakes (V02max) of 26 female students, athletes(n=13) and nonathletes (n=13), were measured by progressive bicycle exercises in neutral (Ta : 25°C) and hot (Ta : 35°C) environments, Heart rate (HR), systoiic blood pressure (SBP) and rectal temperature (Tre) were recorded continously during exercise. V02max of nonathletes were not significantly decreased in hot environment. On the other hand, athletes decreased siguificantly V02max by 6.5% in hot environment. There was no difference between groups in maximal HR in neutral or hot environments. In neutral environment, SBP of athletes at maximum work loads were significantly higher than those of nonathletes, but in hot envirolllnent, there was no difference between groups. Tre of aihletes at maximum work loads were significantly higher than those of nonathletes in both enviroments due to long exercise time. But in both qroups, there was no difference of Tre between environments.
