Shandong And The National Team Of Outstanding Man Volleyball Sport Assistant Power Jump Serve Technique Kinematics Research

Objective:Shandong men’s volleyball team as China’s PaiTan, a strong contingent League fourth success in two consecutive seasons. But the the Shandong team with the best players jump serve huge gap of quality, raise barriers to become one step closer to restricting the Shandong team score. Jump Serve domestic small, and most are stuck in theory, the relatively low level of the athletes studied. In this study, a high-speed camera (200frames/s) on the Shandong team, four members of the non Shandong team, four members of8the Jump Serve action analysis. The puipose is to identify the Shandong team of four players in the run-up jump serve, take-off, air lead arm, arm swing batting, landed technical movements with the outstanding players in the domestic gap, make the correct diagnosis proposed rationalization of the comments and suggestions provide strong theoretical support for the practice of Shandong volleyball training.Methods:2sets of the SONY high speed camera shooting frequency is25Hz/s synchronization of spiking action shooting athletes. Use the the APAS software. Trim program to synchronize digital video clips. Descriptive statistics, average, standard deviation (X±SD).Conclusion:Road Season1Shuai final step step step distance greater loss rate is smaller approach speed, kicking a shorter time and smaller right knee angular displacement, resulting in jump height insufficient. Recommended that he reduce the approach speed appropriate to reduce the horizontal direction of the velocity components, lengthened kicking time, increasing the flight angle. In the air hitting:phase, swivel magnitude smaller active muscle tension, elastic potential energy is small, making the ball speed is also smaller. Recommend future as much as possible to increase the the twist magnitude of training body backwards, stretching muscles working distance. Li Runming run-up stage and step smaller the distance, the takeoff right knee angular displacement is small. The takeoff air hitting stage the Li Runming hip angle and swivel magnitude is relatively small, it is recommended that in the process of Arm awareness increases torso stretched amplitude, and increase the training of the body backward twist amplitude, elongated muscles work distance. Arm instant hit elbow and shoulder angle is too large, is not conducive to the transfer of the joint velocity, reduces causing batting ball.3Micropropagated and in David takeoff flight angle is too small, resulting in excessive levels of speed, the ball easily out of bounds; same time lead to the jump height is too small, the point is too low batting tee greatly decreased the power, even lead to lower net, it is recommended that he increase the vertical component of the rooms, to increase the takeoff speed of the vertical component. Shandong team, four members are present batting timing bad, especially Micropropagated, is recommended usually pay more training, handle the toss, run-up, takeoff, hitting relationship. It is also recommended that extra whipping action Shandong team training, awareness batting in the fastest hand speed.