Wang H K, Cochrane T
Department of Sports Science-Balls, Taipei Physical Education College, Taipei, Taiwan, ROC.
J Sports Med Phys Fitness. 2001 Sep;41(3):403-10.
The aim of this study was to evaluate the relationship between shoulder mobility, rotator muscles' strength and scapular symmetry, and shoulder injuries and/or pain in elite volleyball athletes.
An isokinetic shoulder muscle strength test, which was performed at speeds of 60/sec and 180/sec, and shoulder mobility and scapula lateral slide tests were conducted bilaterally on 16 subjects, who represented the England elite volleyball players. The subjects also prospectively completed monthly questionnaires during the competition season to report on their shoulder condition.
The results showed that the active range of shoulder internal rotation and concentric external rotators' strength in the dominant arm were significantly less, than in the non-dominant arms, but the internal rotators were significantly stronger in both concentric and eccentric tests at both testing speeds. Seven of 16 subjects indicated overt shoulder injury or pain during their training season, nine subjects had shoulder mobility impairment, seven had muscle imbalance, 13 had relative muscle weakness and five had scapular asymmetry. The association between shoulder muscle strength imbalance (eccentric external < concentric internal) of rotators in the dominant arm and shoulder injuries was statistically significant (Fisher's exact test, p<0.05).
We conclude that rotator muscle strength imbalance may play an important role in shoulder injuries in high-level volleyball players.
本研究旨在评估精英排球运动员的肩部活动度、旋转肌力量和肩胛骨对称性与肩部损伤和/或疼痛之间的关系。
对16名代表英格兰精英排球运动员的受试者双侧进行等速肩部肌肉力量测试（测试速度为60°/秒和180°/秒）、肩部活动度测试和肩胛骨外侧滑动测试。受试者还在比赛赛季前瞻性地每月填写问卷，报告其肩部状况。
结果显示，优势侧手臂的肩部内旋活动范围和向心外旋肌力量明显小于非优势侧手臂，但在两种测试速度下，内旋肌在向心和离心测试中均明显更强。16名受试者中有7名在训练赛季表示有明显的肩部损伤或疼痛，9名受试者有肩部活动度受损，7名有肌肉失衡，13名有相对肌肉无力，5名有肩胛骨不对称。优势侧手臂旋转肌的肩部肌肉力量失衡（离心外旋＜向心内旋）与肩部损伤之间的关联具有统计学意义（Fisher精确检验，p＜0.05）。
我们得出结论，旋转肌力量失衡可能在高水平排球运动员的肩部损伤中起重要作用。
