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KMID : 1206220210280010023
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Journal of Korean Academy of Physical Therapy Science
2021 Volume.28 No. 1 p.23 ~ p.32
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The effect of whether the lumbar is instable or not and pressure biofeedback application location during clam exercise on pelvic rotation and hip joint muscle activity
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Choi Yong-Gil
Lee Sang-Yeol
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Abstract
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Background: The purpose of this study was to find out how the lumbar instability during clam exercise causes changes in pelvic rotation and hip joint abductor muscle activity.
Design: Case-control study.
Methods: Twenty male participated in this study. The amount of pelvic rotation was measured using myomotion during the clam exercise in a normal group and a group of patients with low lumbar instability, and the muscle activity of the muscle gluteus medius and the tensor fasciae latae using an EMG device.
Results: The amount of pelvic rotation that occurred during the clam exercise was statistically significantly greater in the lumbar instability group than in the normal group (p<.05), and the ratio of muscle activity of the muscle gluteus medius/the tensor fasciae latae was statistically significantly higher in the normal group than in the lumbar instability group (p<.05).
Conclusion: In order to stabilize the lumbo-pelvic and strengthen the strength of the hip joints, it is believed that it is necessary to apply exercise while controlling the lumbo-pelvic movement during clam exercises, and various studies will be needed.
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KEYWORD
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Clam exercise, Hip joint, Lumbar instability, Lumbo-pelvic movement
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