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KMID : 1211620120070030275
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Journal of the Korean Society of Physical Medicine
2012 Volume.7 No. 3 p.275 ~ p.282
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Effect of Hip Adductor Co-contraction on Trunk Muscle Activation during Bridge Exercise in Healthy Young Individuals
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Na Sun-Wang
Oh Duck-Won
Park Hyun-Ju
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Abstract
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Purpose: Bridge exercise has been commonly used in clinical rehabilitation settings to improve trunk control, and hip adductor muscles were a related muscle that may affect trunk muscle activation. The aim of this study was to investigate whether the co-contraction of hip adductor muscles may affect trunk muscle activation during bridge exercises.
Methods: Thirty-eight healthy young subjects (19 men and 19 women) performed bridge exercises (with and without hip adduction movement). Surface electromyography (EMG) data were collected from the dominant-side internal oblique (IO), rectus abdominis (RA), multifidus (MF) and erect spine (ES) during bridge exercises to compare trunk muscles activation patterns.
Result: The EMG activities of IO and RA appeared to be significantly higher during bridge exercise with hip adductor co-contraction than during bridge exercise alone (p<.01), but there were no significant differences in those of MF and ES. Furthermore, there were significant differences in the IO:RA EMG ratio during bridge exercise with hip adductor co-contraction (p<.05).
Conclusion: These findings suggest that integration of hip adduction during bridge exercise may be beneficial in increasing deep muscles’ activity for trunk stabilization.
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KEYWORD
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Bridge exercise, Electromyography, Hip adductor, Trunk muscle
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