This study was made to examine the effects of warming up (W-up) on performance and energy metabolism during 6-minutes bicycle exercise. Four healthy male adults participated in the study. Tow of them were studied two times. Criterion task (CT) consisted of 5-minutes submaximal exercise followed by 1-minute maximal exercise. The intencity of 10-minutes W-up was a work load corresponding to the anaerobic threshold.
　Work rate during the maximal exercise of W-up expriments was 14.8% (P< 0.05) higher than that of control experiments. Total work was significantly higher (4.3%) during CT after W-up compared with CT without W-up. These results indicates that this kind of W-up is the beneficial to performance of this type of exercise.
　Oxygen uptake in the earlier part of CT was significantly higher during W-up conditions. Total oxygen consumption of W-up experiments was 4.3% higher than that of control experiments (P< 0.05). Deferences in lactate before and after CT (⊿LaⅢ) was found to be significantly lower in experiments with W-up compared with control one. These results suggest that part of the lactate produced during W-up can be used as an energy source during CT.

DESCENTE SPORTS SCIENCE Vol.12/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE