| 优秀男子标枪运动员胡海龙最后用力技术的运动学研究 |
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| 引用本文： | 项丽静.优秀男子标枪运动员胡海龙最后用力技术的运动学研究[J].西安体育学院学报,2012,29(4):501-505. |
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| 作者姓名： | 项丽静 |
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| 作者单位： | 西安工业大学体育学院,西安,710032 |
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| 摘 要： | 通过运用三维运动学分析的方法,对陕西省优秀男子标枪运动员胡海龙和国内优秀的选手的最后用力技术研究发现,胡海龙最后用力时间严重偏长,特别是双支撑时间过长,过渡阶段技术差,右脚着地瞬间身体重心的速度大,身体移动的速度快,"交叉步"速度快,过渡阶段对身体重心的控制能力减弱,增加了缓冲的时间,右腿蹬伸不积极、左脚着地速度慢。过渡阶段下肢移动速度较快,不利于超越器械动作的形成,用力顺序存在着问题,器械出手瞬间右髋速度较低,下肢向投掷方向蹬伸不积极,转动速度慢。
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| 关 键 词： | 标枪运动员 最后用力技术 运动学 |
The Kinematic Research on Technique Executed by Javelin Thrower HuHaiLong at the Moment of the Release |
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| XIANG Li-jing.The Kinematic Research on Technique Executed by Javelin Thrower HuHaiLong at the Moment of the Release[J].Journal of Xi'an Institute of Physical Education,2012,29(4):501-505. |
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| Authors: | XIANG Li-jing |
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| Institution: | XIANG Li-jing(School of Physical Education,Xi′an Technological University,Xi′an 710032,China) |
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| Abstract: | The method employed in this research is kinematics analysis,by which the technique executed by Javelin Thrower HuHaiLong at the Moment of the Release was compared that of other elite throwers domestic and abroad.It is found that time spent during Hu’s release is severely prolonged as time consumed during double-support phase is over-extended.Meanwhile,techniques in transional period is poorly performed with a huge velocity of centre of gravity at the moment of right foot contact.Enormous speed of body with quickened cross-steps makes the control of C.G.poor and inadequate,which in turn overstretches the buffering time.It is accompanied by inactive extending of right leg and delayed attacking of left foot.The quickened pace of lower limbs during supporting phase lead to unfulfilled technique of "surmount of apparatus".This disorder of application of force,specifically,less desirable speed of right hip would hindered its rotating speed and further produce a forward extending of lower limbs. |
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| Keywords: | athletes technique of the moment of release kinematics |
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