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This paper uses infrared light spot Qualisys acquisition and analysis system for our excellent table tennis player Wang Hao , Ma Lin, Wang hit a backhand down Pen spin a 3D motion capture technology and parsing , access the entire movement cycle of the kinematic parameters , then use Qualisys Track Manager, Q-Tools software and EXCEL and other points of the photograph to identify, select Done good quality, clear action points resulting analysis and processing , from the upper and lower extremities and trunk characteristics of each joint angle and in every moment variation of phase , size and direction of the swing speed , hitting some parameters on the tempo of time and other aspects , combined with the sports biomechanics , sports anatomy , exercise physiology knowledge of the use of an objective description of the real data topspin backhand down the kinematics technology and law . Thereby helping athletes more rational and effective use of this technology , while taking action teaching, training , evaluation, diagnosis provide a theoretical basis . This paper presents Hold Backhand spin backhand down the racket technology start time in the physical preparation Bima Lin Wang Hao more fully , the result is the argument Wang Hao beat more rapidly, and its swing position reached earlier , it is beneficial for swing movement adjustments ; during the swing start time to prepare Bima Lin Wang Hao 's body more fully , Wang Hao fuller body \support the body and maintain body balance , in conjunction with upper limb flexion and extension . But overall the whole swing ball stage action, the two sides of the lower limbs kicking force action is not obvious , and its kicking in with the play action and subsequent reduction stage ; entire duo -handed swing phase upper limb movement meet the technical characteristics of whipping action . This paper also proposes the same time , compared to two of the technical movements , Wang Hao, Ma Lin is better than in most indicators , particularly in the batting moment of choice, in future training, batting Marlene should pay attention to adjust the time in order to improve ball moment racket speed.
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