J Sport Rehabil. 2017 May;26(3):245-252. doi: 10.1123/jsr.2015-0153. Epub 2016 Aug 24.
Imbalance in shoulder-rotator muscles has been considered a risk factor for injuries in handball. Strength training programs (STPs) may play an important preventive role.
To verify the effects of an STP using elastic bands on shoulder muscles and ball-throwing speed.
Randomized and prospective controlled trial.
Exercise physiology laboratory.
Thirty-nine female handball players were randomly assigned to an experimental (EG, n = 21, 15.3 ± 1.1 y) or a control (CG, n = 18, 15.0 ± 0.8 y) group.
The EG performed the STP with elastic-band progressive exercises for 6 wk before regular handball training, and the CG underwent only their regular training.
Before and after the STP, both groups underwent a ball-throwing-speed test and isokinetic test to assess shoulder internal- (IR) and external-rotator muscle performance.
Average power values for IR muscles presented a significant group-vs-time interaction effect (F = 3.9, P = .05); EG presented significantly higher values after the STP (P = .03). Ball speed presented higher values in EG after the STP in standing (P = .04) and jumping (P = .03) throws. IR peak-torque values and balance in shoulder-rotator muscles presented no group-vs-time interaction effect.
STP using elastic bands performed for 6 wk was effective to improve muscle power and ball speed for young female handball players.
肩部旋转肌的失衡被认为是手球受伤的一个风险因素。力量训练计划（STP）可能发挥着重要的预防作用。
验证使用弹性带进行 STP 对肩部肌肉和投球速度的影响。
随机前瞻性对照试验。
运动生理学实验室。
39 名女性手球运动员被随机分配到实验组（EG，n = 21，15.3 ± 1.1 岁）或对照组（CG，n = 18，15.0 ± 0.8 岁）。
EG 在进行常规手球训练前进行了 6 周的弹性带渐进式力量训练，而 CG 仅进行常规训练。
STP 前后，两组均进行投球速度测试和等速测试，以评估肩部内（IR）和外旋肌的性能。
IR 肌肉的平均功率值呈现出显著的组间-时间交互效应（F = 3.9，P =.05）；EG 在 STP 后呈现出显著更高的值（P =.03）。在站立（P =.04）和跳跃（P =.03）投掷中，EG 在 STP 后投球速度呈现出更高的值。IR 峰值扭矩值和肩部旋转肌的平衡呈现出无组间-时间交互效应。
进行 6 周的弹性带 STP 对年轻女性手球运动员的肌肉力量和球速提高是有效的。
