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首页> 外文期刊>Journal of athletic training >Forward Shoulder Posture in Collegiate Swimmers: A Comparative Analysis of Muscle-Energy Techniques
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Forward Shoulder Posture in Collegiate Swimmers: A Comparative Analysis of Muscle-Energy Techniques

机译：高校游泳者的肩部前倾姿势：肌肉能量技术的比较分析

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Context: Empirical data for treating forward shoulder posture supports stretching the anterior shoulder musculature. Although muscle-energy techniques (METs) have been hypothesized to lengthen muscle, no data have described the usefulness of this technique among swimmers. Objective: To determine if an MET provides improvements in resting pectoralis minor length (PML), forward scapular position, and scapular upward rotation in female collegiate swimmers. Design: Controlled laboratory study. Setting: Athletic training room. Patients or Other Participants: Thirty-nine asymptomatic National Collegiate Athletic Association Division I women's swimmers (19 experimental, 20 control). Intervention(s): The experimental group received 2 treatment sessions per week for 6 weeks. The control group received no intervention during this 6-week period. Main Outcome Measure(s): We administered pretest and posttest measurements for PML, forward scapular position, and scapular upward rotation in positions of rest and 60°, 90°, and 120° of humeral elevation. The MET consisted of a 3-second stretch in the direction of the pectoralis minor fibers, followed by a 5-second isometric horizontal adduction contraction at 25% of maximum force. Immediately after this contraction, the entire sequence was repeated with the muscle being stretched to the new endpoint. A total of 4 cycles of MET were continuously applied per treatment session twice per week for 6 weeks. We conducted 1-way analyses of covariance to determine any between-groups postintervention test differences. Results: The MET group had a greater increase in PML postintervention (P = .001, effect size = 1.6) and a greater decrease in forward scapular position postintervention (P = .001, effect size = 1.07) compared with the control group. No differences were found for scapular upward rotation (P > .10). Conclusions: Our results indicate that 6 weeks of MET treatments applied to the pectoralis minor of asymptomatic female swimmers provided improvements in PML and forward scapular position compared with a control group.
机译：背景：治疗前肩姿势的经验数据支持伸展前肩肌肉。尽管已经假设肌肉能量技术（METs）可以延长肌肉，但尚无数据描述游泳者中该技术的有用性。目的：确定在女大学生游泳者中，MET是否可以改善胸大肌的短长度（PML），肩forward骨向前位置和肩cap骨向上旋转。设计：对照实验室研究。地点：运动训练室。患者或其他参与者：39名无症状的美国国家大学体育协会第一分会女子游泳运动员（19名实验人员，20名对照组）。干预措施：实验组每周接受2次治疗，共6周。对照组在这6周内未接受干预。主要观察指标：我们在休息和60°，90°和120°肱骨抬高位置进行了PML，肩forward骨前向位置和肩cap骨向上旋转的前测和后测。 MET包括在胸小纤维方向上拉伸3秒，然后在最大力的25％时进行5秒等距水平内收收缩。紧缩后，立即重复整个序列，将肌肉拉伸到新的终点。每个疗程每周连续两次共施用4个MET周期，持续6周。我们进行了协方差的单向分析，以确定干预后各组之间的测试差异。结果：与对照组相比，MET组干预后的PML增幅更大（P = .001，效果大小= 1.6），而肩后位置在干预后的前肩骨位置下降幅度更大（P = .001，效果大小= 1.07）。肩cap骨向上旋转没有发现差异（P> .10）。结论：我们的结果表明，与对照组相比，对无症状女性游泳者的胸小肌进行MET治疗6周可改善PML和肩骨向前位置。

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