Effect of an Exercise Program on Glenohumeral Rotator Cuff Muscles Strength in Overhead Athletes with Scapular dyskinesis

Aims: Scapula Dyskinesis (SD) and reduction the strength of glenohumeral External rotator muscles (ER) are shoulder risk factors. While performing high-intensity repetitive throwing movements in overhead athletes can gradually affect the stabilizing mechanisms of the shoulder joint, which are mainly the glenohumeral rotator muscles. This can cause a decrease in the strength of the ER, imbalance of the rotator cuff muscles and SD. Therefore, the purpose of this study was to investigate the effect of an exercise program on SD and the strength of glenohumeral rotator cuff muscles in overhead athletes.Methods: The present quazi experimental study with control group and pre and post-test plan was conducted on ۶۲ female handball players (club-level, ۱۸–۲۵ years old) with SD. The Lateral scapular slide test and Hand dynamometers were used to measure SD and the strength of Glenohumeral rotator cuff muscles, respectively. The participants in the intervention group participated in eight weeks of three sessions of exercise program. DataWere measured before and after the intervention and were analyzed using Mann-Whitney U test.Findings: According to this test, there is a significant difference between the strength of ER (p<۰.۰۰۱) in the intervention and control groups after exercises, So that the strength of ER and the strength of External rotator muscles to Internal rotator muscles ratio (ER:IR) (p< ۰.۰۰۱) has increased after exercises. Also, SD (p= ۰.۰۱۳) after exercises has decreased significantly.Conclusion: exercises program can increase the strength of ER and ER:IR ratio, and improves SD in overhead athletes

کلیدواژه ها:

shoulder” ، “Exercises” ، “Scapular dyskinesia