S4 Classification of bat swings among high-school baseball players

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  • S4 高校野球選手におけるバットスイングの類型化(野球)
  • 高校野球選手におけるバットスイングの類型化
  • コウコウ ヤキュウ センシュ ニ オケル バット スイング ノ ルイケイカ

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The present research aimed to characterize the baseball bat swings of high-school baseball players. Despite the difficulties associated with establishing a classification standard for the quantitative evaluation of bat swings, the acceleration applied to the bat was measured during high-school baseball players' swings. Classification of players' swings based on bat acceleration revealed the following results. (1) Evaluation of players' swings based on the acceleration applied to the bat was possibe. This evaluation clarified methods for applying force and torque to the bat during a swing. (2) Based on changes in acceleration and the angular acceleration applied to the bat just before impact, the swings of these players were classified into nine categories. (3) These nine categories were further consolidated into three types based on changes in angular acceleration. In one type, angular acceleration of the bat decreases before impact. However, all subjects were divided into the remaining two types, in which angular acceleration of the bat increases before impact or angular acceleration of the bat does not increase before impact. These results suggest that classification of bat swings is possible.

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