The Effects of Scapular Stabilization Exercises Accompanied by Spine Stabilization Exercises Using An Unstable Surface on Muscle Activities for Subjects with Scapular Winging

Abstract

This study was intended to inspect the influence of scapular stabilization exercises accompanied by spine stabilization exercises using an unstable surface on muscle activity in subjects with scapular winging. Thirty subjects with scapular winging participated in the experiment. The subjects were randomly divided into two groups. One group performed scapular stabilization exercises accompanied by spine stabilization exercises on an unstable surface, whereas the other group performed only scapular stabilization exercises. In order to study the influence of the intervention, the muscle activity around the shoulder was measured. According to the experimental results, the activation of the lower trapezius muscle and serratus anterior muscle increased significantly in both groups after intervention. The muscle activities of the lower trapezius and serratus anterior in the control group were not as high as those in the experimental group. Moreover, the muscle activities of upper trapezius and pectoralis major decreased significantly in both groups after the exercise interventions, but no significant difference was observed between the two groups. As a result, the scapular stabilization exercises that are widely used in clinical practice were shown to increase lower trapezius and serratus anterior activities. Moreover, a combination of such exercises with spine stabilization exercises on an unstable surface was shown to confer greater benefits than scapular stabilization exercises alone and is thus recommended.