A Randomized Controlled Trial on Posture Improvement and Trunk Muscle Strength by Round Shoulder Posture Improvement Exercise

The aim of this article was to examine investigates the effects of posture-improving exercises on round shoulder posture (RSP) and back muscle strength. 35 college students participated in this study and were measured for both shoulder height and muscle strength. After pretest, participants were divided into shoulder stabilization exercise group (SSEG, n1=12), antagonist strength exercise group (ASEG, n2=12), and control group (CG, n3=11). SSEG and ASEG exercised with a trainer 3 times a week for 30 minutes during 4 weeks. After completion of intervention, there was a significant difference in both shoulders and trunk muscle strength is significant difference for SSEG, ASEG and CG. This study has found that strengthening exercise is more effective in RSP reduction. However, it is the opinion of the researchers that the 4 week exercise period was not long enough to achieve significant results for other measurements. Further comparative studies related to the effects of strength exercises on RSP reduction, lung capacity, and trunk muscle strength is necessary.