Résumé
The purpose of this study was undertaken to examine the effects of alcohol ingestion on temperature regulation during submaximal exercise. Five healthy male students participated in this study. Forty minutes of supine exercise using a bicycle ergometer was done following and without alcohol ingestion of 0.44 m<I>l</I>/kg. Respiratory gas exchange, rectal temperature, skin temperatures at 6 sites, finger blood flow, and heart rate were measured before and during the exercise. Respiratory gas exchange was measured by the Douglas bag method during 8-10, 1820, 28-30 min periods of exercise. Thermistor sensors were applied to measure rectal and skin temperatures, and finger blood flow was measured by venous occlusion plethysmography using a mercury rubber strain gauge. After low doses of alcohol, marked increase in finger blood flow and heart rate were observed in all subjects at rest. During exercise, VE, VO<SUB>2</SUB>, VCO<SUB>2</SUB>, and RQ were not different between the experiments with and without alcohol ingestion except only VE during the 8-10 min period. The rises in rectal temperature during exercise were the same between the two conditions. Heart rate was significantly higher after alcohol ingestion during the period of 20 to 40 min of exercise. Finger blood flow tended to be higher with alcohol ingestion, but not significant. It was suggested that low doses of alcohol (0.44 m<I>l</I>/kg) did not affect thermoregulatory or respiratory responses during submaximal exercise.