バスケットボールにおけるロング・スリー・ポイント・シュートの動作分析

―Tスタイル・シュートの重心移動を中心に―

抄録

The purpose of this study was clarify characteristic of “T-style shooting” (TS) applied to the long shot of basketball through a movement analysis. Comparing with the ordinal style (OS) of it, the investigation revealed the following regarding TS : (1) The success rate at the 9.25m point was higher, but not different at 8.25m. (2) The movement time was significantly shorter (p＜0.05). (3) The average values of the projecting angle and the initial velocity of the ball were higher (p＜0.05). (4) The shift of the body's center of gravity (BCG) during catching and releasing the ball was larger (p＜0.05). (5) The speed of shifting BCG for the vertical direction when the ball was released was faster (p＜0.05). (6) The time between the movements the ball was released and BCG reached the highest position was longer (p＜0.05). That is, it was observed that in TS the ball was released at a moment while BCG was moving up fast before reaching the top. Other features observed in TS were (7) a reaction movement to move the ball front to backward was observed immediately before setting, (8) the EMG during TS was different from OS. Conclusively, it is clear that TS is a shooting technique to efficiently use reaction movement of the four limbs and the characteristic of muscle power output.