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一,前言通过观摩和查阅中外体育科技资料了解到,在掷铅球、铁饼、标枪技术理论中有五个重要问题应进一步研究:(一)当前对三项投掷运动助跑的作用,有两种观点:一是使器械在投掷之前获得速度;二是在投出器械之前取得良好的超越器械姿势。(二)关于三项投掷最后用力阶段的划分,在阅读过的所有资料共同的论述是,掷铅球滑步、掷铁饼旋转、掷标枪交叉步后,右脚落地到左脚落地投出器械,称为最后用力阶段。(三)最后用力时人体发力的时间,有两种不同的观点,其主要区别在于三项投掷运动
I. Introduction By observing and reviewing the information of Chinese and foreign sports science and technology, we learned that there are five important issues in throwing shot, discus and javelin technical theories that should be further studied: (1) Currently there are two views on the role of three throwing athletes The first is to get the instrument speed before it is thrown. The second is to make a good move beyond the instrument position before putting it out. (B) Regarding the division of the final stages of the three throws, all the materials read have been read in common as a throw-and-drop shot, a discus throw, a javelin cross-step, a right foot landing to the left foot and dropping equipment, Known as the last stage of force. (C) There are two different points of view when the last exertion of the human body exerting force. The main difference lies in the three throwing movements