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通过三维高速录像研究表明 ,中国选手具有起跳时间短 ,两脚同时蹬地的起跳特征 ;外国选手具有起跳时间长 ,两脚依次蹬地的起跳特征。扣球是以转体、伸肩和收腹带动挥臂击球的三维动作 ,转体和伸肩动作占有重要作用。击球瞬间肘关节呈 15 0 (°)左右略屈肘击球能充分发挥前臂旋内加速功能。
The study of 3D high-speed video shows that Chinese athletes have the characteristics of take-off with short take-off time and both feet simultaneously. Foreign athletes have the characteristics of taking-off with long take-off time and two feet in turn. Spike is based on the swivel, stretch shoulders and abdomen to bring the swing arm shot three-dimensional action, swivel and stretching exercises play an important role. Shock moment The elbow was about 15 0 (°) slightly flexor elbow hit the ball can give full play to forearm rotation acceleration.