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首页> 外文期刊>Journal of athletic training >Strength asymmetry of the shoulders in elite volleyball players
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Strength asymmetry of the shoulders in elite volleyball players

机译：优秀排球运动员的肩膀力量不对称

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Context: Volleyball players are reported to have shoulder strength imbalances. Previous authors have primarily investigated small samples of male players at a single skill level, without considering playing position, and with inconsistent findings. Objective: To evaluate shoulder strength asymmetry and a history of shoulder injury in a large sample of professional volleyball players of both sexes across different playing positions and skill levels. Design: Descriptive laboratory study. Patients or Other Participants: A sample of 183 volleyball players (99 men, 84 women). Main Outcome Measure(s): We assessed shoulder internal- rotator and external-rotator concentric strength at 608/s using an isokinetic dynamometer and dominant-nondominant differences in shoulder strength and strength ratios using repeatedmeasures analyses of variance. Peak torque was normalized for body mass and external-rotation/internal-rotation concentric strength. Results: Internal-rotation strength was asymmetric in favor of the dominant side in both sexes, regardless of previous shoulder injury status. Male volleyball players had a lower shoulder strength ratio on the dominant side, regardless of previous shoulder injury status. However, this finding was valid only when hand dominance was taken into account. Female volleyball players playing at a higher level (ie, first versus second division) were 3.43 times more likely to have an abnormal strength ratio. Playing position was not associated with an abnormal shoulder strength ratio or strength asymmetry. Conclusions: In male volleyball players, the externalrotation/ internal-rotation strength ratio of the dominant shoulder was lower, regardless of playing position, skill level, or a previous shoulder injury. In female players, the ratio was less only in those at a higher skill level. Although speculative, these findings generally suggest that female volleyball players could have a lower risk of developing shoulder-related problems than male volleyball players. Isokinetic shoulder testing may reveal important information about the possible risk factors for shoulder injuries, so we recommend including it in the functional screening of volleyball players.
机译：背景：据报道，排球运动员的肩膀力量不平衡。先前的作者主要是在单一技能水平上调查了少量男性球员样本，而没有考虑比赛位置，并且得出的结论不一致。目的：评估大量不同性别和职业水平的专业排球运动员的肩膀力量不对称性和肩膀受伤的历史。设计：描述性实验室研究。患者或其他参与者：183名排球运动员的样本（99名男性，84名女性）。主要观察指标：我们使用等速测功机评估了肩部内转子和外转子同心强度在608 / s的情况，并通过重复测量方差分析评估了肩部力量和力量比的显性差异。峰值扭矩针对体重和外旋转/内旋转同心强度进行了标准化。结果：无论先前的肩部受伤状态如何，内旋强度在男女两性中均偏向优势侧。男性排球运动员的显性一侧的肩部力量比较低，而与先前的肩部受伤状态无关。但是，只有考虑到手的优势时，此发现才有效。较高水平（即第一分区与第二分区）比赛的女排球运动员具有异常力量比率的可能性高3.43倍。演奏位置与异常的肩膀力量比或力量不对称无关。结论：在男性排球运动员中，无论比赛位置，技能水平或先前的肩部受伤如何，优势肩部的外旋/内旋强度比均较低。在女性运动员中，该比率仅在技能水平较高的运动员中较小。尽管是推测性的，但这些发现通常表明，与男排球运动员相比，女排球运动员出现肩部相关问题的风险较低。等速肩膀测试可能会揭示有关肩部受伤可能危险因素的重要信息，因此我们建议将其包括在排球运动员的功能检查中。

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