| 男子二级跳远运动员起跳阶段摆动腿技术的运动学分析 |
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| 引用本文： | 刘仕敏.男子二级跳远运动员起跳阶段摆动腿技术的运动学分析[J].四川体育科学,2014(5):59-63. |
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| 作者姓名： | 刘仕敏 |
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| 作者单位： | 兴义民族师范学院体育学院，贵州 兴义，562400 |
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| 摘 要： | 文章运用文献资料、数理统计和图像解析的研究方法，对二级跳远运动员的运动学指标进行研究。结果表明：（1）二级运动员起跳时间平均值是0.130s，缓冲时间平均值为0.048s，蹬伸时间平均值0.082s。缓冲时间、蹬伸时间与整个起跳时间过长。这与二级运动员本身身体素质和技术动作的优劣存在很大关系；（2）二级运动员着板瞬间，摆动腿的摆动角速度平均值为451.72°/s，膝关节角度平均为87.14°上板速度为8.58m/s，与前人的研究有出入；（3）二级运动员速度利用率为76.30%，速度利用率明显低于优秀运动的速度利用率。腾起角平均为26.66°，明显高于优秀运动员的18°-25°；（4）在蹬伸阶段摆动角速度的最大值与腾起角和成绩明显正相关。
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| 关 键 词： | 跳远 二级运动员 摆动腿 运动学 |
Kinematic Analysis of Take off Leg Technology of Men Second Level Long Jumpers |
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| LIU Shi-min.Kinematic Analysis of Take off Leg Technology of Men Second Level Long Jumpers[J].Sichuan Sports Science,2014(5):59-63. |
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| Authors: | LIU Shi-min |
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| Institution: | LIU Shi-min( Dept of EE., Xingyi Normal University for Nationalities, Guizhou Xingyi, 562400, China.) |
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| Abstract: | The use of literature, mathematical statistics and research methods of image analysis, two long jump kinematic studies. The results show that：（1）Second Level Jumpers average 0.130s buffer time average of 0.048s, kicking average time of 0.082s. Buffer time, kicking the time of the take-off time is too long. There is a great relationship with the two athletes physical fitness and the pros and cons of the action; （2）Second Level athletes with the board the moment, the swinging of the swinging leg angular velocity average of 451.72°/s to 87.14° knee angle on board speed of 8.58m/s, and is different from the previous studies;（3）Second Level athletes speed utilization rate of 76.30%, speed utilization is significantly lower than the rate of utilization of the excellent sports. The average flight angle to 26.66°, significantly higher than the elite athletes of the 18°-25°; （4）The maximum angular velocity swing kicking a significant positive correlation with the flight angle and achievements. |
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| Keywords: | Jump Second Level athletes Swinging leg Kinematics |
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