Joint Torque and Mechanical Power of Lower Extremity and Its Relevance to Hamstring Strain during Sprint Running.
Joint Torque and Mechanical Power of Lower Extremity and Its Relevance to Hamstring Strain during Sprint Running.
复制标题
冲刺跑时下肢关节扭矩、机械功率及其与腘绳肌拉伤的相关性
DOI：
10.1155/2017/8927415
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发表时间：
2017
影响因子：
--
通讯作者：
Liu Y
中科院分区：
文献类型：
--
作者：
Zhong Y;Fu W;Wei S;Li Q;Liu Y
本研究的目的是量化腿部关节扭矩的贡献和腿部肌群的机械力量，以进一步阐明腿部肌腱的负荷及其损伤机制。八名国家级男子短跑运动员在合成赛道上进行了最快速度的短跑。同步采集三维运动学数据和地面反作用力。采用节间动力学方法分析各关节肌群的扭矩和功率变化。在短跑过程中，站立阶段的GRF和摆动阶段的运动相关力矩(MDT)对腿部运动和肌肉群有重要影响。具体地说，在站立阶段，髋部和膝部肌肉产生的扭矩和所做的功通常被用来抵消GRF。在摆动阶段，肌肉扭矩的作用转变为主要抵消MDT对控制肢体运动方向的作用。同时，在初始姿势和摆动后期，被动力矩，即GRF产生的地面反作用力矩和MDT，以及腿部各节段的惯性运动，对腿筋肌施加了更大的应力。
The aim of this study was to quantify the contributions of lower extremity joint torques and the mechanical power of lower extremity muscle groups to further elucidate the loadings on hamstring and the mechanics of its injury. Eight national-level male sprinters performed maximum-velocity sprint running on a synthetic track. The 3D kinematic data and ground reaction force (GRF) were collected synchronously. Intersegmental dynamics approach was used to analyze the lower extremity joint torques and power changes in the lower extremity joint muscle groups. During sprinting, the GRF during the stance phase and the motion-dependent torques (MDT) during the swing phase had a major effect on the lower extremity movements and muscle groups. Specifically, during the stance phase, torque produced and work performed by the hip and knee muscles were generally used to counteract the GRF. During the swing phase, the role of the muscle torque changed to mainly counteract the effect of MDT to control the movement direction of the lower extremity. Meanwhile, during the initial stance and late swing phases, the passive torques, namely, the ground reaction torques and MDT produced by the GRF and the inertial movement of the segments of the lower extremity, applied greater stress to the hamstring muscles.
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影响因子：
2.8
作者：
Schache, Anthony G.;Brown, Nicholas A. T.;Pandy, Marcus G.
通讯作者：
Pandy, Marcus G.
影响因子：
2.4
作者：
Slawinski, J.;Bonnefoy, A.;Dumas, R.
通讯作者：
Dumas, R.
影响因子：
2.4
作者：
JACOBS, R;SCHENAU, GJV
通讯作者：
SCHENAU, GJV
DOI：
10.1519/jsc.0b013e3181ad3448
发表时间：
2010-04-01
影响因子：
3.2
作者：
Slawinski, Jean;Bonnefoy, Alice;Cheze, Laurence
通讯作者：
Cheze, Laurence
DOI：
10.1249/mss.0b013e318162d162
发表时间：
2008-04-01
期刊：
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
影响因子：
--
作者：
Bezodis, Ian N.;Kerwin, David G.;Salo, Aki I. T.
通讯作者：
Salo, Aki I. T.