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KMID : 1211620220170030001
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Journal of the Korean Society of Physical Medicine
2022 Volume.17 No. 3 p.1 ~ p.10
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Effects of the Abduction Resistance of the Hip Joint during Bridge Exercise in Patients with Chronic Back Pain: A Cross-Over Study
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Kim Dong-Hyun
Kim Kyu-Ryeong
Bae Chang-Hwan
Kim Myoung-Kwon
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Abstract
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PURPOSE: This study examined the effects of the resistance levels on the muscle activities around the hip and spine during bridge exercise with hip abduction resistance in patients with chronic back pain.
METHODS: A cross-over study design was used. Twenty subjects with low back pain were enrolled in this study. The subjects performed bridge exercises with hip abduction resistances (20 mmHg, 40 mmHg, and 60 mmHg). A Narrow Sling was used to provide resistance. Surface electromyography was used to measure the activity of the erector spinae, biceps femoris, gluteus maximus, and gluteus medius.
RESULTS: The muscle activity of the gluteus maximus and gluteus medius increased significantly with increasing resistance levels. There was a significant difference in the muscle activity of the biceps femoris with a resistance level between 20 mmHg and 40 mmHg, but there was no significant difference in the other resistance levels. There was no significant difference according to resistance level in the erector spinae. The muscle activity ratios of the gluteus medius/erector spinae and gluteus maximus/erector spinae increased significantly with increasing resistance strength.
CONCLUSION: The different levels of abduction resistance for hip abduction during bridge exercise will help activate the gluteus maximus selectively in patients with chronic back pain.
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KEYWORD
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Hip joint, Low back pain, Muscle strength
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