Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments.
Limited hip and knee flexion during landing is associated with increased frontal plane knee motion and moments.
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DOI：
10.1016/j.clinbiomech.2009.10.005
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发表时间：
2010-02
期刊：
影响因子：
--
通讯作者：
Powers CM
中科院分区：
文献类型：
--
作者：
Pollard CD;Sigward SM;Powers CM
有观点认为，在运动任务中限制膝关节和髋关节屈曲的女运动员更多地依靠额面上的被动约束来减速身体重心。这种生物力学模式被认为增加了前十字韧带损伤的风险。到目前为止，矢状面运动学与膝关节前平面运动和力矩之间的关系还没有被探索过。受试者包括58名没有膝伤病史的女子俱乐部足球运动员(年龄范围：11-20岁)。在每个受试者执行降落任务时，收集运动学、地面反作用力和表面肌电图。受试者在着陆减速阶段(高屈曲和低屈曲)，根据矢状面膝关节和髋关节的综合屈曲角度分为两组。与高屈曲组相比，低屈组受试者膝关节外翻角度增加(P=0.02，效应值0.27)，膝关节内收肌力矩增加(P=0.03，效应值0.24)，膝关节和髋部能量吸收降低(P=0.02，效应值0.25；P<；0.001，效应值0.59)，股外侧肌电增加(P=0.005，效应值0.35)。在着陆过程中有有限矢状面运动的女运动员表现出的生物力学特征可能会使这些人面临更大的前十字韧带损伤风险。
It has been proposed that female athletes who limit knee and hip flexion during athletic tasks rely more on the passive restraints in the frontal plane to deceleration their body center of mass. This biomechanical pattern is thought to increase the risk for anterior cruciate ligament injury. To date, the relationship between sagittal plane kinematics and frontal plane knee motion and moments has not been explored. Subjects consisted of fifty-eight female club soccer players (age range: 11 to 20 years) with no history of knee injury. Kinematics, ground reaction forces, and surface electromyography were collected while each subject performed a drop landing task. Subjects were divided into two groups based on combined sagittal plane knee and hip flexion angles during the deceleration phase of landing (high flexion and low flexion). Subjects in the low flexion group demonstrated increased knee valgus angles (P = 0.02, effect size 0.27), increased knee adductor moments (P = 0.03, effect size 0.24), decreased energy absorption at the knee and hip (P = 0.02, effect size 0.25; and P< 0.001, effect size 0.59), and increased vastus lateralis EMG when compared to subjects in the high flexion group (P = 0.005, effect size 0.35). Female athletes with limited sagittal plane motion during landing exhibit a biomechanical profile that may put these individuals at greater risk for anterior cruciate ligament injury.
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影响因子：
4.8
作者：
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通讯作者：
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影响因子：
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作者：
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DOI：
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发表时间：
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期刊：
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
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作者：
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通讯作者：
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DOI：
10.1097/00005768-199907000-00007
发表时间：
1999-07-01
期刊：
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
影响因子：
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作者：
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通讯作者：
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