Kinematic Analysis Of Xi’an Physical Education University Sports School Athletes Li Xiang Of Pole Vault Techniques

Li Xiang as the Xi’an Physical Education University men’s pole vaulter in the multiple actions of pole vault to the technical movement all exist some problems, these problems affect the Li Xiang peacetime training to a large extent, and thus also affect its better performance in the game. In the technical moves in the pole vault, the follow-up action error is due to take off stage of approach to problems caused. Therefore, this article will approach jump technique of Xi’an Physical Education University men’s pole vault of reserve talents of Li Xiang.Hope that through this study can be found in Li Xiang’s error action, put forward the improvement measures of wrong technical movements, and guide the practice, at the same time, through this study is to provide some scientific theory reference for cultivation of reserve talents of China’s pole vault.This paper mainly uses the literature material law, biomechanical measurement method, observation method and mathematical statistics and other research methods of kinematics, kinematics analysis was carried out on the selected data.Research results show that:1. Li Xiang may improve run-up rhythm and improved, and the action of the last two step approach is more active, the last two steps of run-up speed loss rate reduced to 16.33%, from 19.35% before the problem of high speed loss rate for a certain degree of improvement.2. Li Xiang during take off on the forward direction ability improved, and its vertical velocity and level in the run-up speed also improved the ability to combine a reasonable to each other.3. Li Xiang during take off action is more active than before, on the arm shoulder joint for solid pole supporting capacity also increased. Its arm lift on positive, into the chest of consciousness also increased. Jump on the trunk from 92.8 ° Angle decreased to 88.4 °, moment the trunk from 98.5 ° Angle decreases from the ground to 92.3 °, the rod inserted hole consciousness distinct enhancement, coming up the trunk back problems have a certain degree of improvement.4. Li Xiang in takeoff time stretching movements more fully than before, moment jump landing takeoff leg knee joint Angle is increased from 157.2 ° to 157.2 °, jump off the ground moments takeoff leg knee joint Angle is increased from 162.5 ° to 171.5 °, its coming up more and more tend to jump straight leg, in line with the pole vault project during takeoff need explosive action requirements of rapid stretching in takeoff.5. Li Xiang during takeoff time shorten, from 0.14 s to 0.12 s. In the run-up in the last two steps of step length is also more hasten is reasonable, and its stability in his run-up and rhythmic also enhances unceasingly.