サイドステップからの素早い走方向変更動作における方略

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  • サイドステップ カラ ノ スバヤイ ソウ ホウコウ ヘンコウ ドウサ ニ オケル ホウリャク
  • The strategy of rapid running direction change movement from a side step

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In this study, we investigated the center of gravity and leg movement during rapid change of running direction from a side step. We set up the 120-degrees direction change tasks. The subjects were divided into two groups, fast group and slow group, according to the averages of the movement time and the velocity of center of gravity movement. In the fast group, the movement time and the velocity of center of gravity were significantly faster than the slow group, and the velocity of center of gravity was increased after the direction change movement. In the slow group, on the other hand the center of gravity waved to the direction of movement of the side step more, and the movement was delayed. When a direction change angle is large, it is effective to make the height of the center of gravity lower, a trunk is leaned so that it may not be wave on the opposite side of the angle to the direction change, the extension of the knee and the ankle joint is performed quickly.

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