Assessment of upper extremity stability, GIRD (Glenohumeral internal rotation deficit)/GERG (Glenohumeral external rotation gain) ratio and strength of internal rotators (IR) and external rotators (ER) in badminton players

Abstract

Racquet sports have gained increasing popularity in Asia. In the current study performed on 25 district level male badminton players aging between 18-25 years assessment of GIRD/GERG ratio, strength of internal, external rotators and of upper extremity stability was done on the dominant and non-dominant side. On statistical analysis using paired t-test.The internal and external rotators were stronger on dominant side when compared to the non-dominant side. The internal rotators were stronger than the external rotators on both dominant and non-dominant side. The external rotation range of motion was more than the internal range of motion on the dominant and non-dominant side. GIRD/GERG ratio was significant in badminton players (p>0.0001). Correlational statistics using Spearman’s test showed that the strength of the dominant side external rotators correlated with the CKCUEST.The strength of the non-dominant side external rotators, both side internal rotators and GIRD/GERG ratio did not have any significant correlation with the CKCUEST.