The methodological significance of the maximum anaerobic power measurement for tennis players.-Power evaluation estimating for work load in some tennis plays-

摘要

The purpose of this study was to clarify the methodological significance ot the maximum anaerobic power measurement in tennis. To perform this purpose, the maximum anaerobic power ( Pmax ) in elate Japanese student tennis players in Japanese was measured using a bicycle ergometer. Furthermore, to compare between the Pmax measured and the necessary power in some play phase in tennis, the necessary power in some play phase supposed in this study was calculated. For example, in case that the male player who was 70kg weight had to run 5m within 2 seconds, this power was calculated as follows; 70kg×0.665 (Coefficient ratio) × 5m × 9.8 ÷ 2 seconds = 1123.325 W. Coefficient ratio 0.665 was decided by the following formula; the total body mass (100%) - percentage of the upper legs, lower legs and foots. Because of the upper legs lower legs and foots from the total body mass, the part weight of legs and the work rate of legs were not thought about in the Pmax measurement using bicycle ergometer,. In female, this coefficient ratio was 0.647. The results of this study were summarized as follows; (1) A player could not catch up the ball which the opponent hit in comparing between Pmax and the necessary power in the following phase; each player hit the ball on the cross-court and then one player suddenly hit with changing the course of the ball from the cross-court to the straight. (2) After a player hit the ball, however, he usually was back to the cnter of the baseline and he could catch up the above-mentioned ball using the power approximated to the Pmax. (3) This meant that the power evaluation thinking about the technique, namely sport methodological point, was significant for tennis.