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KMID : 1035420180060010007
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Journal of The Korean Society of Integrative Medicine
2018 Volume.6 No. 1 p.7 ~ p.14
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Changes of Muscle Activity of the Quadriceps Femoris with the Change of Ankle and Hip joint Angles during Sit to Stand
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Yoon Sang-Hyuk
Rhee Min-Hyung
Kim Jong-Soon
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Abstract
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Purpose : The purpose of this study was to confirm the changes of muscle activity of the quadriceps femoris with changes of ankle and hip joint angles during sit to stand.
Method : Twenty-five healthy 20s to 30s year old women were participated in the study. the subjects performed standing up movements in 4 positions(standard posture; hip=90° / ankle=0°, posture on decline board; hip>90° / ankle<0°, posture on footboard; hip>90° / ankle=0° and posture on decline board with higher chair; hip=90° / ankle<0°). After then the muscles activity of rectus femoris, vastus medialis and vastus lateralis was measured with surface electromyography.
Result : The muscles activity of rectus femoris, vastus medialis and vastus lateralis at footboard application was measured statistically higher than at decline board with higher chair.
Conclusion : This study confirms that the flexion of hip joint had greater effect on the muscle activity of the quadriceps than plantar flexion of the ankle joint during sit-to-stand movement.
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KEYWORD
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ankle joint, high heel, hip joint, quadriceps, sit-to-stand
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