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首页> 外文期刊>American Journal of Sports Medicine >Knee joint laxity and neuromuscular characteristics of male and female soccer and basketball players.
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Knee joint laxity and neuromuscular characteristics of male and female soccer and basketball players.

机译：男女足球运动员和篮球运动员的膝关节松弛和神经肌肉特征。

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摘要

Anterior cruciate ligament injuries are occurring at a higher rate in female athletes compared with their male counterparts. Research in the area of anterior cruciate ligament injury has increasingly focused on the role of joint proprioception and muscle activity in promoting knee joint stability. We measured knee joint laxity, joint kinesthesia, lower extremity balance, the amount of time required to generate peak torque of the knee flexor and extensor musculature, and electromyographically assessed muscle activity in 34 healthy, collegiate-level athletes (average age, 19.6 +/- 1.5 years) who played soccer or basketball or both. Independent t-tests were used to determine significant sex differences. Results revealed that women inherently possess significantly greater knee joint laxity values, demonstrate a significantly longer time to detect the knee joint motion moving into extension, possess significantly superior single-legged balance ability, and produce significantly greater electromyographic peak amplitude and area of the lateral hamstring muscle subsequent to landing a jump. The excessive joint laxity of women appears to contribute to diminished joint proprioception, rendering the knee less sensitive to potentially damaging forces and possibly at risk for injury. Unable to rely on ligamentous structures, healthy female athletes appear to have adopted compensatory mechanisms of increased hamstring activity to achieve functional joint stabilization.
机译：与男性运动员相比，女运动员前十字韧带损伤的发生率更高。前十字韧带损伤领域的研究越来越集中在关节本体感受和肌肉活动在促进膝关节稳定性中的作用。我们测量了34名健康的大学水平运动员的膝关节松弛度，关节运动感觉，下肢平衡，产生膝屈肌和伸肌肌肉峰值扭矩所需的时间以及肌电图评估的肌肉活动（平均年龄，19.6 + / -1.5岁），曾踢足球，篮球或两者兼而有之。独立的t检验用于确定明显的性别差异。结果显示，女性固有地具有明显更大的膝关节松弛度值，展示出更长的时间来检测膝关节运动进入伸展状态，具有明显优越的单腿平衡能力，并产生明显更大的肌电图峰值幅度和外侧绳肌区域肌肉随后跳下。妇女过度的关节松弛似乎会导致关节本体感受的减弱，从而使膝盖对潜在的破坏力不太敏感，并有受伤的危险。健康的女运动员无法依靠韧带结构，似乎采用了增加绳肌活动的补偿机制来实现关节的功能稳定。

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