| Muscle Activity during Rehabilitation Exercise in Subjects with or without Scapular Winging |
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Yun-A Shin |
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Dankook University |
Correspondence:
Yun-A Shin,
Email: shinagel@empal.com
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Received: 31 August 2013 • Accepted: 19 October 2013 |
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| Abstract |
INTRODUCTION
The purpose of this study is to investigate muscle activity during rehabilitation exercise in subjects with or without scapular winging.
METHODS
40 male college students in their 20s to 30s, were divided into normal group(24.70±1.38years) and scapular winging group(26.88±1.73years). The subjects performed SSUP, SSTP, LSST2, LSST3 of clinical test for determine the asymmetry. Muscle activity of the upper trapezius, lower trapezius, and anterior serratus during 6 rehabilitation exercise were measured using surface electromyography.
RESULTS
There were significant differences between groups on SSUP, SSTP, LSST2, LSST3. Lower trapezius activity and UT/LT showed significant differences between groups on standing dynamic hug, external rotation, press-up with scapular retraction. Anterior serratus activity showed significant differences between group on push-up plus and UT/SA showed significant differences between groups on push-up on the ball. The exercises of standing dynamic hug, external rotation, press-up with scapular retraction were found to be the effective on UT/LT ratio and dynamic hug, push-up plus, push-up on the ball were found to be the effective on UT/SA ratio.
CONCLUSION
The subjects with scapular winging showed higher muscle activity in the upper trapezius and lower in the lower trapezius and anterior serratus. Therefore, we suggested that rehabilitation exercise is needed to improve for muscle balance and trainer should have a preference for exercise with high activation of the LT and SA and low activity of the UT. |
| Keywords:
rehabilitation exercise, scapular wining, muscle activity |
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