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KMID : 0357220050170020038
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Journal of Korean Society Physical Therapy
2005 Volume.17 No. 2 p.38 ~ p.45
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The effect of Electromyographic activity of knee extensor during contralateral hip isometric adduction
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이윤섭
심영헌/임창훈/김명철/신형수/박은세/김진상
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Abstract
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This study was deigned to identify the effect of electromyographic activity of knee extensor during contralateral hip isometric adduction. six young adults who had not experienced any knee injuries were recruited. Their Q-angles were within a normal rage. They were asked to sit on the table. The EMG activities of the vastus lateralis (VL), vastus medialis oblique (VMO) were recorded in sitting by surface electrodes and normalized by MVC EMG values derived from manual muscle test. The EMG activity levels of the VL, RF, and VMO were the highest when foot was externally rotated. The EMG activity level of VMO/VL ratio did show significant differences(p<.05). The onset time of vastus lateralis (VL) and vastus medialis oblique (VMO) was similar in contralateral hip isometric adduction(p<.05).
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KEYWORD
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