Surface Electromyography and Isokinetic Muscle Test for Aerobics Athletes with Exercise-Induced Rotator Cuff Injury based on Ecological Science Theory

Xiang Li, Jingya Qin

Ekoloji, 2019, Issue 108, Pages: 295-299

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Abstract

Objective: To observe and analyze the surface electromyography and isokinetic muscle test for aerobics athletes with exercise-induced rotator cuff injury. Methods: A total of 180 aerobics athletes with exercise-induced rotator cuff injury treated at our hospital were enrolled (research group). Meanwhile, 180 healthy athletes were selected as control group. Surface electromyography and isokinetic muscle test were performed on members in both groups. And the results were compared. Results: Results showed that the EMG value of supraspinatus and infraspinatus of the research group were significantly lowered than those of the control group, when the shoulder was abduced at an angular velocity of 60 °/s and 90 °/s. (P < 0.05); meanwhile, the EMG value of infraspinatus of the research group
were significantly lowered than those of the control group, when the angular velocity was 90 °/s and 120 °/s (P < 0.05); moreover, the peak torques of the research group at shoulder external/internal rotation as well as at shoulder abduction and adduction with an angular velocity of 60 °/s, 90 °/s and 120 °/s were significantly lowered than those of the control group (P < 0.05).Conclusion: When an athlete suffered from rotator cuff injury, it will be difficult to involve the supraspinatus and the infraspinatus muscles at shoulder abduction. And the combined force of the middle bundle of deltoid muscle and supra spinatus would be impaired due to rotator cuff injury, thus weakening the shoulder joint abduction ability.

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