Department of Physical Medicine and Rehabilitation, Faculty of Medicine, University Hospital of Saint-Etienne, France.
Int J Sports Med. 2013 Jul;34(7):654-60. doi: 10.1055/s-0032-1312587. Epub 2013 Feb 26.
This study was conducted to analyze whether internal (IR) and external (ER) rotator shoulder muscles weakness and/or imbalance collected through a preseason assessment could be predictors of subsequent shoulder injury during a season in handball players. In preseason, 16 female elite handball players (HPG) and 14 healthy female nonathletes (CG) underwent isokinetic IR and ER strength test with use of a Con-Trex® dynamometer in a seated position with 45° shoulder abduction in scapular plane, at 60, 120 and 240°/s in concentric and at 60°/s in eccentric, for both sides. An imbalanced muscular strength profile was determined using -statistically selected cut-offs from CG values. For HPG, all newly incurred shoulder injuries were reported during the season. There were significant differences between HPG and CG only for dominant eccentric IR strength, ER/IR ratio at 240°/s and for IRecc/ERcon ratio. In HPG, IR and ER strength was higher, and ER/IR ratios lower for dominant than for nondominant side. The relative risk was 2.57 (95%CI: 1.60-3.54; P<0.05) if handball players had an imbalanced muscular strength profile. In youth female handball players IR and ER muscle strength increases on the dominant side without ER/IR imbalances; and higher injury risk was associated with imbalanced muscular strength profile.
本研究旨在分析在赛季前评估中收集的肩部内（IR）和外（ER）旋肌的强弱和/或不平衡是否可以预测手球运动员在赛季中随后发生的肩部损伤。在赛季前，16 名女精英手球运动员（HPG）和 14 名健康的非运动员女性（CG）在肩胛平面以 45°外展角进行了坐姿等速 IR 和 ER 力量测试，使用 Con-Trex®测力计，角速度分别为 60、120 和 240°/s（向心）和 60°/s（离心），双侧测试。通过从 CG 值中选择统计学上的切点来确定肌肉力量不平衡的特征。对于 HPG，所有新发生的肩部损伤都在赛季期间报告。HPG 与 CG 之间仅在优势侧的偏心 IR 力量、240°/s 时的 ER/IR 比值和 IRecc/ERcon 比值上存在显著差异。在 HPG 中，IR 和 ER 力量在优势侧高于非优势侧，ER/IR 比值较低。如果手球运动员存在肌肉力量不平衡特征，则相对风险为 2.57（95%CI：1.60-3.54；P<0.05）。在年轻女性手球运动员中，优势侧的 IR 和 ER 肌肉力量增加而没有 ER/IR 不平衡；肌肉力量不平衡特征与较高的受伤风险相关。
