The aim of this study is to investigate the thermoregulatory responses when the five male students exercised wearing the three different types of clothes, the shorts (N), the training wear (W) and the Gore-tex ski wear (G). We let the subjects one hour exercise in three work intensities of 49.0, 73.5 and 98.0 W under the ambient temperature of 21.4°C, relative humidity of 58.8% and wind velocity of 0.1m/sec. At the work intensity of 98.0 W, metabolic heat production was not significantly different among the three clothing conditions. Body weight loss of N was significantly less than those of W and G. However, no significant difference was made between W and G. Mean skin temperature wearing G was higher than that of N, but the rectal temperature rose similarly. Clothes wearing resulted in an upward shift of the regression line of body weight loss with rectal temperature level. But by paying special regard to the fact that an additional amount of the loss was retained by the clothing, the overall regression coefficient turned out to be doubled.

DESCENTE SPORTS SCIENCE Vol.6/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE