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通过对我国优秀标枪运动员 2 9人次投掷步技术纪录影片的解析 ,并与世界优秀运动员投掷步有关环节运动学参数变化的对比分析发现 ,我国男子标枪运动员投掷步第 1、2步躯干后倾角过大 ,使第 2～ 3步躯干后倾角变化量相对较小 ,影响了交叉步的动作幅度。我国女子标枪运动员交叉步存在的主要问题是下肢前移幅度不够。男女运动员都存在着投掷步第 4步左膝弯屈程度较大 ,左侧支撑无力的现象。
Through the analysis of the documentary records of 29 throwing steps of outstanding javelin throwers in China and the comparison with the change of kinematics parameters of the throwing steps of the elite athletes in the world, it is found that the jerks of the Chinese javelin throwers in steps 1 and 2 Large, so that the second to third-step torso camber change is relatively small, affecting the cross-step range of motion. The main problem existing in the crossover step of female javelin throwers in our country is that the lower extremities move forward insufficiently. Both male and female athletes have the phenomenon that the left knee flexion is larger in the fourth step of the throwing step, and the weakness in the left support.