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.