排序方式： 共有33条查询结果，搜索用时 0 毫秒
31.
探讨优秀女子背越式跳高运动员动作的运动学特点,比较健将(n.6)与一级组(n.8)在助跑、起跳阶段运动学参数差异,为运动员科学训练提供定量依据. 对身高、体重相配匹的健将和一级组成功完成的背越式跳高全过程进行三维录像拍摄,Simi Motion9. 01采集的运动学数据进行组间独立样本t检验,并与成绩进行person相关分析. 结果显示:( 1 )助跑阶段:健将组倒3步、2步、1步重心合速度显著大于一级组(P<0. 05),倒1步后倾角显著小于一级组(P<0. 05);(2)起跳阶段:健将组内倾角变化幅度、起跳腿髋关节蹬伸幅度、重心变化幅度非常显著大于一级组(P<0. 01),起跳腿着地时相重心垂直速度、离地时相重心高度显著大于一级组(P<0. 05);(3)倒1-3步重心合速度、起跳蹬伸过程髋、踝关节角度、内倾角和重心高度变化幅度与成绩显著正相关;倒1步后倾角、起跳时相摆动腿角速度、起跳腿着地时相内倾角与成绩显著负相关. 相似文献
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以四川省优秀跨栏运动员尹靖为研究对象对第13届亚洲田径大奖赛男子110m栏测试赛上的第5栏跨栏动作技术进行运动生物力学三维摄像解析,获得运动学参数进行分析探究其动作技术上存在的问题,为跨栏运动技术训练提供参考. 相似文献
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Craig A. Wassinger Joseph B. Myers Timothy C. Sell Sakiko Oyama Elaine N. Rubenstein Scott M. Lephart 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(2):98-109
By understanding the normal humeral and scapular kinematics during the kayak stroke, inferences about the relationship of kayaking technique and shoulder injury may be established. The purpose of this study was to describe scapular and humeral kinematics and to compare dominant versus non-dominant symmetry in healthy whitewater kayakers performing the forward stroke. Twenty-five competent whitewater kayakers (mean age: 34.1 ± 9.4 years, mean height: 1.768 ± 0.093 m, mean mass: 78.2 ± 13.0 kg) underwent humeral and scapular kinematic assessment, using an electromagnetic tracking device, while kayaking on a kayak ergometer. Paired t-tests were used to determine symmetry. Scapular and humeral kinematic means and standard deviations at six time points during the kayak stroke were described. Scapular and humeral kinematics were shown to be similar upon bilateral comparison. The greatest potential for injury during the forward stroke may be at thrust paddle shaft vertical when the humerus is maximally elevated in internal rotation and adduction as subacromial structures may be mechanically impinged. The relationship between scapulohumeral kinematics related to injury at other time points are also described. 相似文献