Glenohumeral range of motion and lower extremity flexibility in collegiate-level baseball players.
Glenohumeral range of motion and lower extremity flexibility in collegiate-level baseball players.
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DOI：
10.1177/1941738111422336
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发表时间：
2012-01
期刊：
影响因子：
3.3
通讯作者：
Rubino LJ
中科院分区：
文献类型：
--
作者：
Anloague PA;Spees V;Smith J;Herbenick MA;Rubino LJ
投掷运动导致优势臂外旋（ER）运动范围（ROM）单侧增加。躯干前倾在球释放有关的球速度。下四分之一的灵活性和优势臂ROM之间的关系尚不清楚。下肢灵活性与优势臂ER ROM和总旋转ROM之间存在相关性。前瞻性队列研究。研究了42名大学棒球投手。测量人口统计学、优势臂、双侧盂肱ER和内旋（IR）ROM。通过坐位前伸测试评估下象限灵活性。总旋转运动（TRM）计算为ER + IR = TRM。配对t检验检查了优势臂和非优势臂之间ER、IR和TRM的差异; Pearson积矩相关系数、肩关节ROM和下肢灵活性变量（α = 0.05）。优势臂的ER平均值显著大于IR平均值，TRM平均值双侧无显著差异。坐前屈成绩与优势臂的TRM和ER密切相关，大学生棒球运动员的TRM向ER有显著的变化。下四分之一的灵活性与优势臂ER和总旋转ROM，但不是在nondominant arm. The坐和达到测试可能是有用的，以确定一个投手的潜力，以实现适量的躯干前倾。这可以最大化实现优势臂的最大ER和增加的球速度所需的滞后效应。
The throwing motion results in unilateral increases in dominant arm external rotation (ER) range of motion (ROM). Trunk forward tilt at ball release is related to ball velocity. The relationship between lower quarter flexibility and dominant arm ROM is not known. There is a relationship between lower extremity flexibility and dominant arm ER ROM and total rotation ROM. Prospective cohort study. Forty-two collegiate baseball pitchers were studied. Demographics, dominant arm, and bilateral glenohumeral ER and internal rotation (IR) ROM were measured. Lower quarter flexibility was assessed via sit-and-reach test. Total rotation motion (TRM) was calculated as ER + IR = TRM. Paired t tests examined differences between the dominant and nondominant arms for ER, IR, and TRM; Pearson product-moment correlation coefficients, shoulder ROM and lower extremity flexibility variables (α = 0.05). ER mean value was significantly greater, and IR mean value significantly less, in the dominant arm. TRM mean values were not significantly different bilaterally. Sit-and-reach results were strongly correlated with TRM and ER of the dominant arm. There was a significant shift in TRM toward ER in collegiate baseball players. Lower quarter flexibility was strongly correlated with dominant arm ER and total rotation ROM but not in the nondominant arm. The sit-and-reach test may be useful to identify a pitcher’s potential to achieve an appropriate amount of trunk forward tilt. This may maximize the lag effect necessary to achieve maximum ER of the dominant arm and increased ball velocity.