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首页> 外文期刊>Journal of athletic training >Internal rotation and scapular position differences: a comparison of collegiate and high school baseball players.
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Internal rotation and scapular position differences: a comparison of collegiate and high school baseball players.

机译：内旋和肩cap骨位置差异：大学和高中棒球运动员的比较。

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CONTEXT: Conditions such as labral and rotator cuff injuries have been linked with decreases in glenohumeral internal-rotation and increases in external-rotation motion. Also, decreased glenohumeral internal rotation is strongly associated with scapular dyskinesis. OBJECTIVE: To compare healthy collegiate and high school baseball players' glenohumeral joint range of motion and scapular position. DESIGN: Cross-sectional study. SETTING: Institutional research laboratory. PATIENTS OR OTHER PARTICIPANTS: Thirty-one male National Collegiate Athletic Association Division I collegiate (age = 20.23 +/- 1.17 years, height = 186.24 +/- 5.73 cm, mass = 92.01 +/- 7.68 kg) and 21 male high school baseball players (age = 16.57 +/- 0.76 years, height = 180.58 +/- 6.01 cm, mass = 79.09 +/- 11.51 kg). MAIN OUTCOME MEASURE(S): Glenohumeral internal and external rotation and scapular upward rotation were measured with a digital inclinometer. Scapular protraction was measured with a vernier caliper. All variables except scapular upward rotation were calculated as the difference between the dominant and nondominant sides. RESULTS: Collegiate baseball players had more glenohumeral internal-rotation deficit (4.80 degrees, P = .028) and total motion deficit (5.73 degrees, P = .009) and less glenohumeral external-rotation gain (3.00 degrees, P = .028) than high school players. Collegiate baseball players had less scapular upward rotation than high school players at the 90 degrees (4.12 degrees, P = .015, versus 3.00 degrees, P = .025) and 120 degrees (4.00 degrees, P = .007, versus 3.40 degrees, P = .005) positions. The scapular protraction difference was greater in collegiate baseball players than in high school players in the hands-on-hips and 90 degrees positions (0.77 cm, P = .021, and 1.4 cm, P = .001). CONCLUSIONS: When comparing high school with collegiate baseball players, these data suggest that glenohumeral internal-rotation deficit and scapular position change as the level of competition increases.
机译：背景：唇唇和肩袖损伤等状况与盂肱内旋的减少和外旋运动的增加有关。而且，盂肱内旋的减少与肩cap运动障碍密切相关。目的：比较健康的大学和高中棒球运动员的盂肱关节的运动范围和肩cap骨位置。设计：横断面研究。地点：机构研究实验室。患者或其他参与者：美国国家大学体育协会一三十一男（年龄= 20.23 +/- 1.17岁，身高= 186.24 +/- 5.73厘米，体重= 92.01 +/- 7.68公斤）和21个男高中棒球（年龄= 16.57 +/- 0.76岁，身高= 180.58 +/- 6.01厘米，体重= 79.09 +/- 11.51公斤）。主要观察指标：Glenohumeral的内部和外部旋转以及肩cap骨向上旋转是通过数字测斜仪测量的。用游标卡尺测量肩cap骨前伸。除肩cap骨向上旋转外，所有变量均按优势侧和非优势侧之差计算。结果：大学生棒球运动员的盂肱内旋转不足（4.80度，P = .028）和总运动赤字（5.73度，P = .009）以及较少的盂肱外旋转增益（3.00度，P = .028）比高中生在90度（4.12度，P = .015，相对于3.00度，P = .025）和120度（4.00度，P = .007，相对于3.40度）时，大学棒球运动员的肩cap向上旋转次数少于高中球员P = .005）位置。在大学篮球运动员中，在手握姿势和90度位置时，肩cap骨突出差异大于高中球员（0.77 cm，P = .021和1.4 cm，P = .001）。结论：将高中与大学棒球运动员进行比较时，这些数据表明，随着竞争水平的提高，肩肱内旋转缺损和肩cap骨位置改变。

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