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首页> 外文期刊>Journal of athletic training >Active Stiffness and Strength in People-With Unilateral Anterior Shoulder Instability: A Bilateral Comparison
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Active Stiffness and Strength in People-With Unilateral Anterior Shoulder Instability: A Bilateral Comparison

机译：人-单侧前肩不稳的人的主动刚度和力量：双边比较

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Context; Active muscle stiffness might protect the unstable shoulder from recurrent dislocation. Objective: To compare strength and active stiffness in participants with unilateral anterior shoulder instability and to examine the relationship between active stiffness and functional ability. Design: Cross-sectional study. Setting: University research laboratory. Patients or Other Participants: Participants included 16 males (age range, 16-40 years; height = 179.4+-6.1 cm; mass = 79.1 +-6.8 kg) with 2 or more episodes of unilateral traumatic anterior shoulder instability. Main Outcome Measure(s): Active stiffness and maximal voluntary strength were measured bilaterally in participants. In addition, quality of life, function, and perceived instability were measured using the Western Ontario Stability Index, American Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form, and Single Alpha Numeric Evaluation, respectively. Results: We found less horizontal adduction strength (t_(15)=-4.092, P=.001) and less stiffness at 30% (t_(14)=-3.796, P= .002) and 50% (t_(12)=-2.341, P= .04) maximal voluntary strength in the unstable than stable shoulder. Active stiffness was not correlated with quality of life, function, or perceived instability (r range, 0.0-0,25; P>,05). Conclusions: The observed reduction in stiffness in the unstable shoulder warrants inclusion of exercises in the rehabilitation program to protect the joint from perturbations that might lead to dislocation. The lack of association between active stiffness and quality of life, function, or perceived instability might indicate that stiffness plays a less direct role in shoulder stability.
机译：上下文;主动的肌肉僵硬可以保护不稳定的肩部免于反复脱位。目的：比较单侧前肩不稳参与者的力量和活动僵硬，并检查活动僵硬与功能能力之间的关系。设计：横断面研究。地点：大学研究实验室。患者或其他参与者：参与者包括16名男性（年龄范围：16-40岁;身高= 179.4 + -6.1厘米;体重= 79.1 + -6.8公斤），并伴有2次或更多次单侧外伤性前肩不稳。主要观察指标：从参与者的两侧进行主动僵硬和最大自愿力量的测量。此外，生活质量，功能和感觉上的不稳定性分别使用西安大略省稳定性指数，美国肩膀和肘部外科医生标准化肩膀评估表和单个字母数字评估来衡量。结果：我们发现较少的水平内收强度（t_（15）=-4.092，P = .001）和较小的刚度，分别为30％（t_（14）=-3.796，P = .002）和50％（t_（12）） = -2.341，P = .04）不稳定肩部比稳定肩部的最大自愿力量。活动性僵硬与生活质量，功能或感知的不稳定性无关（r范围，0.0-0,25; P> 0.05）。结论：观察到的不稳定肩部僵硬程度的减少，需要在康复计划中进行锻炼，以保护关节免受可能导致脱臼的干扰。活动性僵硬与生活质量，功能或感知的不稳定性之间缺乏关联可能表明，僵硬在肩部稳定性中的作用不那么直接。

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