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- Title
OMUZ NÖTRAL POZİSYONDA YAPILAN SKAPULAR RETRAKSİYON EGZERSİZLERİ SIRASINDA TRAPEZİUS KAS AKTİVASYONU: SUBAKROMİYAL SIKIŞMA SENDROMU VE SAĞLIKLI BİREYLERDE KARŞILAŞTIRMALI BİR ÇALIŞMA
- Authors
KARA, Dilara; HARPUT, Gülcan; DÜZGÜN, İrem
- Abstract
Purpose: The aim of this study was to investigate trapezius activity during scapular retraction exercises patients with SAIS and compare with healthy controls. Methods: Twenty-two patients with SAIS (age:31.8±10.7years, BMI:23.5±3.1 kg/m2) and 22 healthy controls (age:31.6±10.2 years, BMI:23.7±2.9 kg/m2) were included in this study. Surface electromyography was used to measure the upper (UT), middle (MT), lower(LT) trapezius activation during retraction exercises. Three resistive exercises at shoulder 0°abduction were performed (Exercise1: retraction with elbow flexed 90°; Exercise2: retraction with elbow full extension, Exercise3: retraction with bilateral shoulder external rotation). The electromyography signals were normalized maximum voluntary contraction (%MVC). UT, MT and LT activation levels and UT/LT ratio were calculated for each exercise. Pain level during exercises was assessed by visual analog scale. Repeated measures of ANOVA was used for statistical analysis. Results: Retraction exercises produced 15-26%MVC UT activity, 33-46%MVC MT activity, 18-30%MVC LT activity. There were no significant exercise by group interactions for UT (F(2,84)=0.73, p=0.48), MT (F(2,84)=0.28, p=0.75), LT (F(2,84)=1.14, p=0.33) activation and UT/LT ratio (F(2,84)=0.89, p=0.41). The exercise main effect was significant for UT, MT, LT activation and UT/LT ratio (p<0.05). UT, MT, LT activation were lower Exercise 1 while UT/LT ratio was lower Exercise3. The severity of pain was significantly higher (p=0.02) Exercise3 and similar and lower (p=0.89) Exercise1 and 2. Conclusion: Due to lower UT and greater LT activity, scapular retraction exercise with shoulder external rotation could be better for scapular rehabilitation. However, it should be considered that this exercise has the greatest risk of pain in SSS.
- Publication
Journal of Exercise Therapy & Rehabilitation, 2017, Vol 4, pS12
- ISSN
2148-8819
- Publication type
Article