节点文献
陕西优秀竞走选手20公里比赛中关键技术特征分析
An Analysis of Key Technical Characteristics of Shaanxi Excellent Race Walkers in the 20KM Race
【摘要】 目的:分析陕西优秀竞走运动员吴全明、杨柳静和马丽在2023年全国竞走冠军赛暨青少年锦标赛中的技术动作特征及其优缺点,进而为其提高竞走技术动作提供数据参考。研究方法:(1)通过中国知网查阅分析竞走运动文献;(2)使用两台JVC GC-PX100型摄像机,在距比赛场地起始点400米与500米处进行平面定点摄像;(3)利用瑞士Dartfish运动视频技战术分析系统进行运动学特征分析。研究结论:(1)吴全明技术特征:左右步长及步频数据存在差异;支撑腿垂直期间膝关节出现屈膝;身体重心浮动过大,上肢躯干角出现前倾现象,重心速度较慢。(2)杨柳静技术特征:左右步长及步频数据存在差异;身体重心浮动过大,上肢躯干角出现前倾现象,重心速度较慢。(3)马丽技术特征:左右步长及步频数据存在差异;支撑腿垂直期间膝关节出现屈膝;腾空时间及距离过长;身体重心浮动过大,上肢躯干角出现前倾现象,重心速度较慢。因此,建议:(1)吴全明、杨柳静、马丽三人需减少左右步长、步频差异;(2)加强支撑腿膝关节练习;(3)缩短左右腿轮换时间,减少腾空时间;(4)加强上肢躯干直立以及身体协调性练习;(5)提高整体技术动作的规范性与实效性。
【Abstract】 This paper aims to analyze the technical movement characteristics of Shanxi elite race walkers Wu Quanming, Yang Liujing and Ma Li in the 2023 National Race Walking Championships and Youth Championships, find out the advantages and disadvantages of the athletes, and provide data reference for their improvement of technical movement.Main research methods: Using CNKI to consult related literature and read books to understand the technology of race walking; Two JVC GC-PX100 cameras were selected 400 meters and 500 meters away from the starting point of the competition venue and plane fixed point shooting was carried out.The kinematic characteristics were analyzed using the Swiss Dartfish movement video technique and tactics analysis system.Conclusions:(a) For Wu Quanming, the data of left and right step length and step frequency were different; The knee joint appears to bend during vertical support leg; The center of gravity of the body floats too much, and the upper limb trunk Angle tilts forward, and the center of gravity speed is slow.(b) For Yang Liujing, there are differences in the data of left and right step length and step frequency; The center of gravity of the body floats too much, and the upper limb trunk Angle tilts forward, and the center of gravity speed is slow.(c) For Ma Li, there are differences in the data of left and right step length and step frequency; The knee joint appears to bend during vertical support leg; The air time and distance are too long; The center of gravity of the body floats too much, and the upper limb trunk Angle tilts forward, and the center of gravity speed is slow.Suggestions:(a)Wu Quanming, Yang Liujing and Ma Li, as outstanding athletes in Shanxi, are also national reserve talents.There are advantages and disadvantages in technical movements, and the difference between left and right step length and step frequency should be reduced.(b)Strengthen support leg knee joint exercises;(c) Shorten the left and right leg rotation time, reduce the air time;(d)Strengthen the upper limb trunk upright and body coordination exercises;(e)Improve the standardization and effectiveness of the overall technical action.
【Key words】 race walking; Shaanxi excellent athlete; technical characteristics;
- 【文献出处】 体育科技文献通报 ,Bulletin of Sport Science & Technology , 编辑部邮箱 ,2023年10期
- 【分类号】G821
- 【下载频次】3