부산대학교 도서관

The purpose of this study was to examine the isokinetic muscular strength of the shoulder muscles during different velocity movements from slow to fast and to investigate the effect of velocity of movement on the muscle strength of TUBS patients. Thirteen sports injured patients and 12 healthy volunteers were evaluated by use of a Biodex isokinetic dynamometer. Isokinetic measurements were performed at 60, 180 and 360 deg/sec in two planes: (1) internal rotation/external rotation in 90 degrees of shoulder abduction and 90 degrees of elbow flexion (2nd IR/ER), and (2) abduction and adduction in coronal plane. 2nd IR strength values of sports injured patients were lower than those of healthy volunteers at all velocities. The strength ratios between external rotation and internal rotation were not in normal range in the patients group. These results suggest a dysfunction of the rotator muscles in the patients group. Furthermore, abductor strength values of patients at 180 and 360 deg/sec were significantly lower, and the adductor strength value of patients at 360 deg/sec was also lower than that of healthy subjects. Our results showed that some of the injured sport players had insufficient muscular strength in abduction and adduction in the fast velocities while strength was normal in the slow or intermediate velocities.