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Effect of Abdominal Hollowing on Muscle Activity of Gluteus Maximus and Erector Spinae during Bridging Exercise  

Koh, Eun-Kyung (Department of Physical Therapy, Masan University)
Jang, Jin-Ho (Department of Physical Therapy, College of Tourism & Health Science, Joongbu University)
Jung, Do-Young (Department of Physical Therapy, College of Tourism & Health Science, Joongbu University)
Publication Information
The Journal of Korean Physical Therapy / v.24, no.5, 2012 , pp. 319-324 More about this Journal
Abstract
Purpose: This study examined the muscle activities of the erector spinae (ES) and gluteus maximus (GM) during bridging exercises with and without abdominal-hollowing. Methods: Nineteen healthy subjects with no medical history of low back pain or hip flexion contracture were enrolled in this study. The subjects performed bridging exercises with and without abdominal hollowing or with and without a one-leg lift. The muscle activities of the ES and GM were measured by surface electromyography during bridging exercises under each condition. A 2 (abdominal hollowing)X2 (one-leg lift) repeated ANOVA was used to compare the normalized muscle activities of the ES and GM. Results: The muscle activity of the ES during bridging exercise with abdominal-hollowing was significantly smaller than that without abdominal-hollowing (p=0.00). The muscle activities of the GM during bridging exercise with abdominal-hollowing were significantly greater than those without abdominal-hollowing (p=0.00). In addition, the muscle activities of the GM during bridging exercise with one-leg lifting was significantly greater than that without one-leg lifting (p=0.00). Conclusion: Bridging exercise with abdominal-hollowing appears to be more effective on activating the GM muscle than that without abdominal-hollowing minimizing the activation of the ES muscle.
Keywords
Abdominal hollowing; Bridging exercise; Erector spinae; Gluteus maximus;
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Times Cited By KSCI : 2  (Citation Analysis)
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