我国优秀女子标枪运动员刘诗颖投掷技术的生物力学分析

发布时间：2018-03-26 02:13

本文选题：女子运动员　切入点：标枪　出处：《中国体育科技》2017年04期

【摘要】：目的:对我国优秀女子青年标枪运动员刘诗颖多次试投的技术数据进行分析,并与美国优秀选手数据进行对比,了解刘诗颖技术特点和影响她成绩的技术因素,希望能够为她的训练提供针对性建议。方法:通过三维拍摄方法,获得刘诗颖2013~2016年19次试投技术数据,同时收集美国女子标枪记录保持者Patterson近8次试投技术数据(60 m以上)进行分析比较。结果:相关性分析结果显示,刘诗颖的成绩与标枪的实际飞行距离(r=0.997,P0.001)以及真空飞行距离(r=0.828,P0.001)呈显著正相关。刘诗颖的成绩与出手水平速度(r=0.700,P=0.001)和出手垂直速度(r=0.472,P=0.041)呈显著正相关。出手水平速度与右脚着地时重心前移速度(r=0.558,P=0.013)和左脚着地时刻髋-肩扭转角呈显著正相关(r=0.457,P=0.049),与单支撑期重心前移损失速度(r=-0.579,P=0.009)呈显著负相关。而且以上指标都与Patterson有显著差距。结论:刘诗颖的成绩主要决定于真空飞行距离,目前刘诗颖应进一步提高助跑速度,另外,左脚着地时躯干仍要保持良好的后倾状态,以加长力作用于标枪的距离,并尽量增加肩髋扭转的幅度,增加"超越器械"的效果。在保持出手时刻标枪姿位的同时注重发展纵轴用力,提高出手时向前向上的速度,避免侧向拉枪。
[Abstract]:Objective: to analyze the technical data of Liu Shiying, an outstanding female javelin athlete in China, and compare it with that of American elite athletes, to understand the technical characteristics of Liu Shiying and the technical factors that affect her performance. It is hoped that she can provide specific suggestions for her training. Methods: through the three-dimensional photography method, we can obtain 19 technical data of Liu Shiying's 19 tests from 2013 to 2016. At the same time, the technical data of American female javelin record holder Patterson were collected for more than 60 m. Results: correlation analysis showed that, Liu Shiying's achievement was positively correlated with the actual flying distance of javelin 0.997g / P0.001) and vacuum flight distance (r = 0.828 / P0.001). Liu Shiying's achievement was positively correlated with the horizontal speed of the javelin and the vertical velocity of the javelin (r = 0.472P0.041), respectively. There was a significant positive correlation between the forward moving velocity of the center of gravity and the angle of torsion between hip and shoulder when the left foot landed on the ground. There was a significant negative correlation between the velocity of forward shift loss of the center of gravity in the single support period and the velocity of the forward shift of the center of gravity, r-0.579, P0. 009. The above indexes were significantly different from the Patterson. Liu Shiying's achievements are mainly determined by the vacuum distance. At present, Liu Shiying should further improve the run-up speed. In addition, the trunk of the left foot should remain in a good backward position when landing on the ground, in order to increase the distance between the javelin and the shoulder and hip, and to increase the range of shoulder and hip torsion as far as possible. Increase the effect of "beyond the instrument". Pay attention to the development of longitudinal force while maintaining the position of javelin at the time of release, increase the speed of forward and upward when shooting, avoid sideways pulling the gun.
【作者单位】：北京体育大学;烟台体育运动学校;美国北卡罗来纳大学教堂山分校;
【基金】：国家体育总局科研课题(2013B033)
【分类号】：G824.3

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