乒乓球横拍反手快拉下旋球技术的运动学量分析

Kinematical Volume Analysis on Backhand of Tennis Grip Quick Pull Technique of Table Tennis

横拍反手快拉技术对回接反手位底线长下旋、半出台与小三角下旋球,有明显技、战术优势,符合乒乓球发展趋势。运用运动学量的相对性、独立性与瞬时性特性,将横拍反手快拉下旋球分为平动参考系与转动参考系进行讨论:充分利用来球平动速度,增大球拍在转动方向的分速度,可减少拉球下网几率;"曲线挥拍"、"加速制动"能有效增大挥拍速度。

Backhand of tennis grip quick pull technique,which is in line with the development trend of table tennis,shows significant technical and tactical advantage in catching the bottom line long backspin at backhand location,half the introduction of the ball and primary three corners.We analyzed this technique by new method,dividing movement of backhand of tennis grip quick pull technique into translational reference frame and rotational reference frame according to relativity,independence and transient features of kinematical volume,which can greatly simplify the analysis process.Taking full advantage of the ball speed and increasing sub speed of racket in the direction of rotation can reduce the chance of pulling the ball into the net.＂Curve swing＂ and ＂acceleration braking＂ can effectively increase the speed of swing.