Eagles Alexander N, Sayers Mark G, Lovell Dale I
Faculty of Science, Health, Education, and Engineering, University of the Sunshine Coast, Maroochydore, Queensland, Australia -
Faculty of Science, Health, Education, and Engineering, University of the Sunshine Coast, Maroochydore, Queensland, Australia.
J Sports Med Phys Fitness. 2017 May;57(5):514-520. doi: 10.23736/S0022-4707.16.06281-2. Epub 2016 Mar 9.
The purpose of this study was to examine how hip, knee and ankle kinetics and kinematics influence effective impulse production during countermovement jumps.
Eighteen semi-professional soccer players (22.8±2.2 years) volunteered to participate in the study. Participants completed three maximal countermovement jumps on two force platforms (1000 Hz) that were linked to a nine camera infrared motion capture system (500 Hz).
Kinetic and kinematic data revealed jumpers who fail to achieve uniform ground reaction force curves that result in optimal impulse production during their jump always display hip adduction and or hip internal rotation during the concentric phase of the countermovement jump. The variation of hip adduction and or internal rotation likely represents failed joint transition during the concentric phase of the countermovement jump and appears to account for a non-uniform force trace seen in these jumpers.
The findings suggest rehabilitation and conditioning exercises for injury prevention and performance may benefit from targeting frontal and transverse plane movement.
本研究的目的是探讨髋、膝和踝关节的动力学和运动学如何影响反向运动跳跃过程中的有效冲量产生。
18名半职业足球运动员（22.8±2.2岁）自愿参与本研究。参与者在与九台摄像机红外运动捕捉系统（500Hz）相连的两个测力平台（1000Hz）上完成三次最大反向运动跳跃。
动力学和运动学数据显示，在反向运动跳跃的向心阶段未能获得导致最佳冲量产生的均匀地面反作用力曲线的跳跃者，总是表现出髋关节内收和/或髋关节内旋。髋关节内收和/或内旋的变化可能代表反向运动跳跃向心阶段关节过渡失败，并且似乎解释了这些跳跃者中看到的不均匀力轨迹。
研究结果表明，针对预防损伤和提高运动表现的康复和体能训练可能受益于针对额面和横断面运动。
