60分間ペダリング運動時の外耳道温と局所発汗量の変動

Thermoregulation during 60 minutes low and high intensity pedaling exercises and in recoveries of 60 minutes was discussed with the data of external auditory canal temperature (ear temperature) and skin sweating rate.The intensities of exercise were 44%V02max as a low intensity exercise and 73%V02max as a high intensity exercise. The subjects were 8 healthy males. The all subjects performed 60-min low intensity exercise perfectly; however， three subjects quitted the high intensity exercise at 27-40 minutes because of fatigue. Oxygen intake and blood lactate were measured by every 15 minutes，ear temperature was measured by every 5minutes，and skin sweating rate was measured by every 10 minutes during exercise and in recovery.The room temperature was 24.3土1.8't(mean土SD)，and the humidity was 60.4土7.4%. The ear temperature elevated within 1℃ in low intensity exercise，and it was with 2.5℃ in high intensity exercise. The sweating rate was 20-160g/㎡/min in low intensity exercise，a nd it was 400g/㎡/min as the highest value in high intensity exercise. There was an individual specificity in thermoregulation during exercise.