Analysis Of Technical Characteristics Of Run-up And Final Exertion Of Chinese Female Javelin Thrower Liu Shiying

As one of China’s outstanding female javelin throwers,Liu Shiying has a high technical level and can represent the highest level of Chinese female javelin throws.Through kinematic analysis,this article has certain reference value and practical significance for the coaches and athletes of the javelin project,and can provide reasonable training guidance for javelin athletes at all levels.This study uses literature data method,expert interview method,video observation method,mathematical statistics method,etc.,and takes Chinese female javelin thrower Liu Shiying’s approach and final force technique as the research object.The conclusion shows:1 The characteristics of Liu Shiying’s run-up afterwards are as follows: Liu Shiying’s countdown 4-step step length is increased first and then decreased;when the countdown 4-step step is accelerated first,after the second countdown becomes significantly slower,the last step takes the least time;First,it speeds up,and after the penultimate step becomes significantly slower,the last step is the fastest;Liu Shiying ’s cross-step action structure is more scientific and reasonable,and finally the hard working distance is far,which can effectively promote its force;Liu Shiying ’s run-up effect needs to be improved After the right foot hits the ground,it can’t push hard in time,and the left foot can’t actively touch the ground.The technique of connecting between running and the final force needs to be further strengthened.The advantage of running approach is that the last step takes less time,the speed is fast,the structure of the cross-step movement is scientific and reasonable,and the working distance of the final hard work is long.The disadvantage is that the pedaling is not timely,and the connection technology between the running and the last hard work needs to be strengthened.2 Liu Shiying’s countdown to the right foot immediately after 2 steps of the right foot is relatively small,and it is not enough to surpass the equipment.3 Liu Shiying ’s three-step countdown of the body ’s center of gravity speed is relatively stable.At the moment of the last shot,the body ’s center of gravity speed decreases rapidly,increasing the equipment ’ s shot speed;The hip joint has the lowest height above the ground.4 Liu Shiying’s final exertion is that the left and right knee joint angles are both large,and the left knee joint angle is large,the buffer angle is small,which can provide sufficient rigid support for the body,and the right knee joint angle is large,indicating that the runway speed loss is less,possible Both are converted into the final hard shot speed.5 Liu Shiying lacks in the control of the javelin shot angle.The angle is slightly larger and has a higher shot height.The javelin shot speed is close to the world’s best level.There is room for improvement.The javelin shot speed needs to be further improved.