TY - JOUR T1 - Shoulder Girdle Muscles Endurance in Subjects with and without Impingement Syndrome TT - مقایسه استقامت عضلات کمربند شانه‌ای در بیماران مبتلا به سندرُم گیرافتادگی و افراد سالم JF - USWR JO - USWR VL - 12 IS - 2 UR - http://rehabilitationj.uswr.ac.ir/article-1-965-en.html Y1 - 2011 SP - 56 EP - 63 KW - Impingement syndrome KW - Shoulder girdle muscles KW - Muscle endurance KW - Muscle imbalance N2 - Objective: Any minimal alteration in performance and coordination of scapular and glenohumeral muscles has the potential to lead to shoulder joint dysfunction. The impingement syndrome has been reported as is the most common diagnosis of shoulder pain. The purpose of this study was to determine whether endurance deficits could be detected in patients with shoulder impingement. Materials & Methods: By convenient sampling 15 patients with impingement syndrome at average of 45.3 years of age and 15 healthy persons (age 45.8 years) through a case–control design participated in the study. Endurance of glenohumeral and scapulothoracic muscles were tested with a hand held dynamometer. Independent t–test was used to statistically analyze different groups. Results: Compared to non–impaired subjects, those with impingement syndrome demonstrated a significantly lower endurance of external rotation, scaption and scapular abduction and upward rotation movements (P M3 ER -