Quantitative Analysis Of The Difference Between Spiking And Jump Serving Action Structure

Research purpose:By average, individual analysis and independent samples T test for hair to jump and general technical movement, this paper compares and analyzes smash hit the ball out to jump serving and general spiking technique structure differences. Through correlation analysis,affecting spiking and vigorously jump serving the batter speed key of the techniques of kinematics parameters.research significance: in order to further improve the spiking and jump serving the batter speed to provide technical guidance.The research methods:Based on the strong jump serving and general drop shot action structure difference as the research object. In Beijing sports university education college volleyball players, graduate students and the school volleyball team volleyball players, a total of eight called experiment object. Using three dimensional high speed video and analytic system for athletes to jump serving and general spiking technique kinematic characteristics are studied, the main analysis of stroke phase jump in the air from moment to moment kinematics parameters of this process.The results of the study:Average drop shot vigorously take longer to jump serving strokes suspension, jump leaps Angle is bigger, the degree of the trunk and right hip Angle variation is more obvious. General smash and vigorously jump serving ball suspension phase in the knee Angle, upper limb Angle of each link, and upper limbs there is no significant difference of velocity of each link. Ball height, shoulder, hip torsional amplitude, maximum shoulder hip twist Angle, minimum right hip Angle, elbow point relatively most on the moment the body, the height of the elbow and shoulder, elbow and wrist joints velocity relay is one of the important factors that affect stroke eventually hand speed.Hitting moment arm buckling angular size and the location of the man and the ball is one of the important factors affecting the batter speed. The research conclusion:Based on the above analysis, we suggest that theathletes in the process of stroke, to follow the action principle, pay attention to the momentum transfer large joints drive the small joints in turn;Strongly jump serving and smash when combined with the practice,attention should be paid to the structural differences between the two;In the training of teaching, strengthen the lumbar muscles flexible and cutting power of practice, in order to increase pace after takeoff show abdomen lead arm, the torso torsional amplitude and improve the stroke speed; Strengthen the shoulder flexibility exercises, and increase the lead arm and forearm rotation Angle.