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KMID : 1211620180130040123
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Journal of the Korean Society of Physical Medicine
2018 Volume.13 No. 4 p.123 ~ p.129
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Comparison of Muscle Activity According to Hip Abduction Angle during Hip Extension Exercise in Prone Position
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Cho Youn-Ho
Lee Han-Suk
Park Sun-Wook
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Abstract
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PURPOSE: This study was conducted to investigate the influence of hip abduction angle on the muscle activity of the Gluteus Maximus (GM), Biceps Femoris (BF) and Tensor Fascia Lata (TFL) during Knee Flexed Prone Hip Extension exercise.
METHODS: The subjects of this study were 42 healthy individuals. All participant consented to participate in this study. Subjects performed exercise, using the Knee Flexed Prone Hip Extension exercise in three hip abduction position 0°, 15° and 30°. Subjects rested two minutes, between changing hip abduction position. Data were analyzed using a Noraxon MR-XP 1.08 Master Edition EMG to determine average amplitude, for each angle and muscle. All data were processed by Multivariate analysis of variance (MANOVA). There were a total of three groups. the GM muscle, BF muscle, TFL muscle.
RESULTS: GM muscle activity was greatest in the 30° hip abduction position (p<.05), followed by 0°. Between 0° and 30° has significant difference in muscle activity. However, the BF and TFL amplitude were greatest at 0° hip abduction position followed by 30°. Moreover, the TFL differed significantly between 0° and 30°, but, BF did not (p<.05).
CONCLUSION: Hip abduction at 30° was found to be the most appropriate position for GM muscle activity.
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KEYWORD
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Electromyography, Hamstring muscles, Prone position
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