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Efficacy of throwing exercise with TheraBand in male volleyball players with shoulder internal rotation deficit: a randomized controlled trial

医学 肩袖 投掷 等长运动 运动范围 三角形曲线 物理疗法 物理医学与康复 运动医学 肩关节 随机对照试验 内旋 古怪的 无症状的 外科 工程类 物理 机械工程 量子力学
作者
Mohsen Moradi,Malihe Hadadnezhad,Amir Letafatkar,Zohre Khosrokiani,Julien S. Baker
出处
期刊:BMC Musculoskeletal Disorders [BioMed Central]
卷期号:21 (1) 被引量:35
标识
DOI:10.1186/s12891-020-03414-y
摘要

Abstract Background The Glenohumeral internal-rotation deficit (GIRD) is related to the altered eccentric external-rotator (ER), the concentric internal-rotator (IR), muscle strength, and the ER: IR ratio. GIRD has been documented as a risk factor for shoulder injuries. However, few studies have investigated the effect of an exercise training on these parameters in athletes with GIRD. Therefore, the purpose of this study was to evaluate the effects of an 8-week throwing exercise with a TheraBand for retraining the rotator cuff on Electromyography (EMG) activity of selected muscles, rotator cuff muscle strength, the glenohumeral (GH) joint IR range of motion (ROM) and GH joint position sense in asymptomatic male volleyball players with GIRD. Methods Sixty male volleyball players with GIRD were randomized into either a training group or a control group. The experimental group underwent an 8-week throwing exercise with a TheraBand including 5 sessions of stretching and 3 sessions of strengthening exercises per week. The control group received an active self-exercise program. EMG (onset time and muscle activation), shoulder range of motion (ROMs), strength and GH joint position sense were all assessed pre and post trainings. Results There were statistically significant within-group differences in the EMG activity of the anterior deltoid ( p = 0.005), middle deltoid ( p = 0.007), posterior deltoid ( p = 0.004), infraspinatus ( p = 0.001) and supraspinatus ( p = 0.001) muscles, IR ROM ( p = 0.001), rotator cuff muscle strength ratio ( p = 0.001), and GH joint position sense ( p = 0.033) in the experimental group. A 2 × 2 analysis of variance with a mixed model design and independent and paired t-tests were used for statistical analysis. Conclusions Throwing exercise with a TheraBand improved shoulder muscle activation, IR ROM, rotator cuff muscle strength ratio and GH joint position sense in participants with GIRD. These findings may improve the treatment of GIRD in a clinical setting. Although the results are significant, further studies should follow up the long-term effects of the Throwing exercise with a TheraBand on GIRD. Trial registration Current Controlled Trials using the UMIN-RCT website with ID number of, UMIN000038416 “Retrospectively registered” at 2019/10/29.
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