The Kinematic Study Of Table Tennis Player's Forehand High-spin Loop Drive And Forehand Fast Loop Drive Skill

Table tennis known as China's "national sport", chopping-type is one main play skill. As the rapid technology development of the world table tennis in recent years, facing to the rise of loop ball skill, chopping style of play is facing unprecedented challenges, and now how to defeat loop ball skill become a key problem to be solved. To defeat the loop ball skill, the current chop athlete also needs to continue to strengthen basic skills training to enhance stability. Only they have a stable chop skills, chop players can cause great difficulty in a continuous attack, and may even increase the opponent's error rate. the chop skills research has mainly focused on the theoretical research and empirical studies, the expression way did not intuitionist enough, and there is no quantitative data to support.This article is intended to acquire parameters of forehand high-spin loop drive, forehand fast loop drive skill through three-dimensional camera and analyze them to find out the differences and contacts among different joints, for providing reference of the table tennis forehand chop loop ball skill teaching and training. Research outcomes as follows:In the period of forehand high-spin loop drive and forehand fast loop drive, the athletes showed significant lower limb flexion squatting movements, on both sides of the hip, knee angle significantly reduced, mainly through its movement of rotation, the upper and lower limbs of the trunk links and muscle coordination then hitting the ball by bat;In the process of swing bat to hit the ball, forehand high-spin loop drive compared to forehand fast loop drive, the movements of all joints go longer; trunk fully rotated and improves momentum growth. Swing maximum speed does not appear on the bat hitting moment instantly; It most appears in the swing process before the maximum speed; Forehand loop skills became more initiative, the hitting time was advanced. The hitting time of forehand high-spin loop is mainly in early decline,and forehand fast loop drive's hitting time is closer the peak time; when the chop player uses forehand cutting high crane and fast loop ,it is focused on hitting the ball down in front, while cutting fast loop than cutting high loop shot is relatively more toward the front.