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首页> 外文期刊>Journal of electromyography and kinesiology: Official journal of the International Society of Electrophysiological Kinesiology >A comparison of muscle stiffness and musculoarticular stiffness of the knee joint in young athletic males and females
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A comparison of muscle stiffness and musculoarticular stiffness of the knee joint in young athletic males and females

机译：青年运动男女的膝关节肌肉僵硬和肌肉关节僵硬的比较

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The objective of this study was to investigate the gender-specific differences in peak torque (PT), muscle stiffness (MS) and musculoarticular stiffness (MAS) of the knee joints in a young active population. Twenty-two male and twenty-two female recreational athletes participated. PT of the knee joint extensor musculature was assessed on an isokinetic dynamometer, MS of the vastus lateralis (VL) muscle was measured in both relaxed and contracted conditions, and knee joint MAS was quantified using the free oscillation technique. Significant gender differences were observed for all dependent variables. Females demonstrated less normalized PT (mean difference (MD) = 0.4 N m/kg, p = 0.005, eta(2) = 0.17), relaxed MS (MD = 94.2 N/m, p < .001, eta(2) = 0.53), contracted MS (MD = 162.7 N/m, p < .001, eta(2) = 0.53) and MAS (MD = 422.1 N/m, p < .001, eta(2) = 0.23) than males. MAS increased linearly with the external load in both genders with males demonstrating a significantly higher slope (p = 0.019) than females. The observed differences outlined above may contribute to the higher knee joint injury incidence and prevalence in females when compared to males. (C) 2015 Elsevier Ltd. All rights reserved.
机译：这项研究的目的是调查年轻活跃人群中膝关节的峰值扭矩（PT），肌肉僵硬（MS）和肌肉关节僵硬（MAS）的性别差异。 22位男性和22位女性休闲运动员参加了比赛。在等速测力计上评估膝关节伸肌的PT，在松弛和收缩条件下测量股外侧肌（VL）的MS，并使用自由振荡技术对膝关节MAS进行定量。观察到所有因变量的显着性别差异。女性表现出较少的标准化PT（平均差异（MD）= 0.4 N m / kg，p = 0.005，eta（2）= 0.17），放松MS（MD = 94.2 N / m，p <.001，eta（2）= 0.53），男性收缩性MS（MD = 162.7 N / m，p <.001，eta（2）= 0.53）和MAS（MD = 422.1 N / m，p <.001，eta（2）= 0.23）。男性和女性的MAS均随着外部负荷的增加而线性增加，男性的斜率明显高于女性（p = 0.019）。与男性相比，上述观察到的差异可能导致女性膝关节损伤的发生率和患病率更高。 （C）2015 Elsevier Ltd.保留所有权利。

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