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[摘要] :
請在此輸入摘要The purpose of this study was to investigate the different of dominant arm shoulder rotation torque between the baseball pitchers, infielders, and outfielders. Participants were 27 first-level collegiate baseball players, including 9 pitchers, 10 infielders, 8 outfielders. A Biodex Isokinetic Dynamometer was used for estimation of shoulder muscle strength. This system’s test velocity was set at 60 °/s and the range of motion of dominant arm shoulder in flexion, abduction, 90° of abduction with external rotation, and 90° abduction with internal rotation. The results indicated that there was no significant different in internal rotation peak torque and ER/IR ratio between pitchers, infielders, and outfielders. There was significantly different in external rotation peak torque. The infielders and outfielders possess greater external rotation peak torque than pitchers.
[英文摘要] :
The purpose of this study was to investigate the different of dominant arm shoulder rotation torque between the baseball pitchers, infielders, and outfielders. Participants were 27 first-level collegiate baseball players, including 9 pitchers, 10 infielders, 8 outfielders. A Biodex Isokinetic Dynamometer was used for estimation of shoulder muscle strength. This system’s test velocity was set at 60 °/s and the range of motion of dominant arm shoulder in flexion, abduction, 90° of abduction with external rotation, and 90° abduction with internal rotation. The results indicated that there was no significant different in internal rotation peak torque and ER/IR ratio between pitchers, infielders, and outfielders. There was significantly different in external rotation peak torque. The infielders and outfielders possess greater external rotation peak torque than pitchers.
[參考文獻] :
Noffal G.J. (2003). Isokinetic eccentric-to-concentric strength ratios of the shoulder rotators muscles in throwers and nonthrowers. American Journal of Sports Medicine, 31, 537-541.
Dauty M., Delbrouck C. & Huguet D.(2003). Reproducibility of concentric and eccentric isokinetic strength of the shoulder rotators in normal subjects 40 to 55 years old. Isokinet Exercise Science. 11, 95-100.
Waner J. J., Micheli L. J. & Arslanian L. E.(1990). Patterns of flexibility, laxity, and strength in normal shoulders and shoulders with instability and impingement. American Journal of Sports Medicine, 18, 366-375.
Ellenbecker T. S. & Davies G. J.(2000). The application of isokinetics in testing and rehabilitation of the shoulder complex. Journal of Athletic Training, 35, 338-350.
Dillman C. J., Fleising G. S. & Andrews J. R. (1993). Biomechanics of pitching with emphasis upon shoulder kinematics. Journal of Orthopaedic & Sports Physical Therapy, 18, 402-408.
Ellenbecker T. S. & Mattalino A. J. (1997). Concentric isokinetic shoulder internal and external rotation strength in professional baseball pitchers. Journal of Orthopaedic & Sports Physical Therapy, 25(5), 323-328.
Alderink G. J. & Kuck D. J. (1986). Isokinetic shoulder strength of high school and college-age pitchers. Journal of Orthopaedic & Sports Physical Therapy. 7, 163-172.
Lin H. T., Ko H. T., Lee K. C., Chen Y. C. & Wang D. C. (2015). The change in shoulder rotation strength ratio for various shoulder positions and speeds in the scapular plane between baseball players and non-players. Journal of Physical Therapy Science. 27, 1559-1563.