バスケットボールのチェストパスにおける技能の水準と機械的効率の関係

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  • バスケットボールのチェストパスにおける技能の水準と機械的効率の関係(人間環境学)
  • バスケットボール ノ チェストパス ニ オケル ギノウ ノ スイジュン ト キカイテキ コウリツ ノ カンケイ
  • Relationship between skill level and mechanical efficiency concerning chest pass of basketball (HUMAN ENVIRONMENT)

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Abstract

To investigate the relationship between skill level and mechanical efficiency concerning chest pass of basketball, 2 kinds of exercise were executed to the target on the wall by 5 skilled and 5 unskilled players. Throwing frequency was increased at one exercise, and the distance to the target was increased at the other exercise gradually at each 3 minutes, respectively. During the exercises energy expenditure was measured by analysis of expired gas, and external work i. e. kinetic energy of the ball which was given by subjects was calculated with video tape recording. Overall delta efficiency of skilled and unskilled players were not different significantly at both 2 exercises. This was caused by the reason that internal work was small but ball speed was large at skilled players. Hitting probability of unskilled players was decreased with the increase in throwing distance, but that of skilled players was maintained up to about 5m. In this range, net efficiency of skilled players was significantly higher than that of unskilled players. The difference was supposed to be derived from mastery of the throwing skill.

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