The male subjects pedalled a Monark bicycle ergometer at the work rate of 600 kpm/min for 30 min under environmental conditions (mean ±DS): ambient temperature, 26.0±0.2℃; room humidity, 66±3% and windless condition. The results were summarized as follows;
1) Tympanic (Tty), esophageal (Tes) and mean skin (T ̅sk) temperatures during submaximal exercise increased gradually after the lapse of the latent period for 6-7 min.
2) The sweat onset during exercise was observed after the increases of Tes and T ̅sk, without the significant increase of Tty. The total sweat rate (mean ±SD) Showed 199±31.0 g/m² during exercise for 30 min.
3) Heart rate and systolic blood pressure increased immediately upon the initiation of exercise and afterward, kept approximately a steady state to the end of exercise. The results of this study have shown the interesting findings on the characteristics of thermoregulatory responses during submaximal exercise in man.

DESCENTE SPORTS SCIENCE Vol.1/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE