Table Tennis Backhand Medial Screw Units Biomechanical Analysis

In this paper, use the ARIEL / APAS three-dimensional image analysis system, on the excellent table tennis backhand medial screw technology to table within for three-dimensional shooting action and analysis, access to the process of technical action related Kinematic parameters, use the Excel for statistics. Twists technical obtaining from top athlete's backhand table within, backhands the table within to the table tennis to twist the technical movement process the center of gravity, the lower limb various joints angle, the torso angle of torsion, the upper limb various joints angle, the upper limb link, the racket speed, wields pats the direction, hits a ball kinematics parameters and so on forcibly direction and racket path carries on the system the analysis, and unifies the movement biology mechanics, the physiology of exercise, the movement anatomy knowledge, the utilization objective data qualitative description backhands the table within to twist technical the kinematics characteristic and the rule.Thus instructs the athlete to be more reasonable effective utilization this technology, for the backhands medial screw technology for table within in to twist the movement technology teaching, the training, the appraisal, the diagnosis provides the theory basis.In this paper, table tennis backhand technique screw inside the body center of gravity is not about conversion, there is no obvious up and down; technical moves the process of buckling of the lower limb squat action, in order to swing at the ball in preparation for stretching leg, together with an explanation of the lower extremities the main force to the pin on the right side; in the whole course of action, as the basis of movement of the trunk link from the coordination of the stabilizing role; athletes cited shoot stage, the reference shoulder, upper arm adduction and internal rotation, elbow up, forearm internal rotation, flexion manual. Shake hand athletes this time than the pen-hold grip angle shoulder big athletes.Touch the ball phase pen-hold grip swing the wrist, elbow to do extension, forearm rotation, wrist Shake hand quickly do outreach and extension, elbow, wrist joint angle increased rapidly, shoulder, elbow, wrist, racket speed increased rapidly; hit play ball with the process after the shoulder, elbow, wrist speed decreases. Ying racket ball in the left pre-swing phase is the rapid movement to the left below the top of welcome before the ball, after ball into the top right before the campaign, with the play until close to the end of a short time after the top of the right movement. After the wave hit the stage with no significant changes in shoulder angle in order to maintain stability. Forearm and wrist swing the ball in the Face of the opportunity to build on the movement, elbow, wrist angle at the end of time with the wave reached its peak, hit mainly by the action aspect of the forearm and hand to complete the movement. With the swing to restore the end of time, the human body to relax, the rapid reduction in preparation for the next swing.This paper also proposed pen-hold grip backhand moves essentials inside screw, screw Shake hand backhand moves with the pen-hold grip the inside of the main difference between action and the implementation of the recommendations put forward.