我国女子链球项目备战2016年里约奥运会重点队员投掷技术的研究

来源 :北京体育大学学报 | 被引量 : 0次 | 上传用户:playmud
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
女子链球是我国田径的优势项目,为了进一步探索项目的内在规律和对运动员技术完善提供帮助,推动该项目在我国的可持续发展。通过运动生物力学拍摄和三维解析的方法,对我国2名最优秀女子链球选手的投掷技术进行研究,发现:我国2名选手普遍存在对器械持续加速能力偏弱现象,特别是第4圈和最后用力阶段,整个旋转中第4圈技术有待进一步完善(都存在球体力量向身体方向转移的拉球、左肩回撤现象)。同时存在器械斜面角偏大以及右腿上腿不积极现象,右脚有延迟着地和速度慢的现象。其中王峥旋转技术中第3圈存在的问题比较大,双支撑阶段左膝关节伸展幅度过大,肩带多余肌肉参与用力,上肢的放松和舒展程度较差,造成器械运行轨迹缩短,以上是王峥技术改进和完善的方向。张文秀的技术主要问题是进旋转速度慢、第4圈向身体方向拉球等问题,造成第4圈双支撑阶段加速距离的缩短,以上问题是张文秀技术完善的方向。通过对比研究发现我国运动员的优势和存在问题,为技术运动员改进和提高运动成绩提供帮助和参考。 Women’s hammer throwing is the superiority item of our country’s track and field. In order to further explore the inherent law of the project and help improve the technical skills of athletes, the women’s tennis ball is promoting the sustainable development of this project in our country. Through the method of sports biomechanics shooting and three-dimensional analysis, the study on the throwing skills of the two most excellent women’s chain throwers in China found that: the two players in our country generally have the weakening ability to continuously accelerate the equipment, especially on the 4th lap and the last Force period, the entire rotation in the first 4 laps technology needs to be further improved (there are ball power transfer to the body direction of the pull ball, left shoulder retracement phenomenon). In the meantime, the bevel angle of the instrument is too large and the right leg does not have a positive phenomenon on the upper leg, and the right foot has a delay in landing and a slow speed. Which Wang Zheng rotation technology in the first three problems there is a big problem, double support phase of the left knee joint extension is too large, shoulder strap muscles involved in the force, lower limbs to relax and stretch to a lesser extent, resulting in shortening the trajectory of the instrument, the above is Wang Zheng technical improvement and perfect direction. Zhang Wenxiu’s main technical problems are slow rotation, the first 4 laps to the body pull the ball and other issues, resulting in the first four laps double support stage to accelerate the shortening of the above problems is Zhang Wenxiu technology perfect direction. By comparing the study found that the advantages and problems of athletes in China, technical athletes to improve and improve the performance of sports to provide help and reference.
其他文献
高职院校的动漫摄影课程因为专业器材的严重缺乏,导致无法更好地完成所制定的教学目标。随着智能手机在摄影硬件上的不n断升级,手机摄像头的光圈、快门、白平衡、iso以及画面像
连续剧《都挺好》的热播,引起了人们对于原生家庭教育的重视。并且在微博上掀起了一拨对于原生家庭讨论的热潮,多个有n关话题登上热搜榜。在其中一个投票话题中,有 8.3 万人参与
在当前中职计算机教学的实践过程中,这一育人目标还没有完全实现,教师应抓住“创新”“创业”两大要素,探讨培养学生n创新创业能力的有效途径,希望可以真正培养出符合社会发展要
会议
高校学生大部分以完成基本的学分为目的,缺少与教师的主动交往,有问题不敢直接对老师提出来,对自己没有进一步发展、n提高的要求。这些学生刚从教师管束的高中解放出来,一下子接
职业教育在我国整个教育体系中发挥着重要的作用,已经得到社会的认可。随着社会对高技能型人才的需求不断扩大,国家也n越来越重视职业教育。为了加快现代职业教育体系,促进职业