계단 오르고 내리기시 엉덩관절 내회전이 무릎관절 폄근과 엉덩관절 벌림근 근활성도에 미치는 영향

• 영문명: Effects of Hip Internal Rotation on Knee Extensor and Hip Abductor Electromyographic Activity During Stair Up and Down
• 발행기관: 한국전문물리치료학회
• 저자명: 오재섭(Jae-seop Oh) 권오윤(Oh-yun Kwon) 이충휘(Chung-hwi Yi) 전혜선(Hye-seon Jeon)
• 간행물 정보: 『한국전문물리치료학회지』한국전문물리치료학회지 제15권 제2호, 54~63쪽, 전체 10쪽
• 주제분류: 의약학 > 의학일반
• 파일형태: PDF
• 발행일자: 2008.05.30

영문 초록

  The purpose of this study was to examine the effect of the hip internal rotation on knee extensor and hip abductor electromyographic (EMG) activity during stair up and stair down mobility. Eighteen healthy subjects were recruited. All subjects performed stair up and down movements on a step of 30㎝ height while maintaining the hip in neutral (condition 1) and hip in internal rotation (condition 2). Surface EMG activity was recorded from five muscles (gluteus maximus, vastus lateralis (VL), vastus medialis oblique (VMO), posterior gluteus medius (Gmed), and tensor fascia latae (TFU) and hip internal rotation angle was measured using a three dimensional motion analysis system The time period for stair up and down was normalized using the MatLab 6.5 program, and EMG activity was normalized to the value of maximal voluntary isometric contraction (%MVIC). The EMG activities according to the hip rotation (neutral or internal rotation) during the entire time period of stair up and down in each phase were compared using a paired t-test. During the entire period of stair up, the EMG activities of VL and TFL in condition 2 were significantly greater than in condition 1 (p<.05). During the entire period of stair down, the EMG activities of VL and TFL in condition 2 were significantly greater than in condition 1 (p<.05). However, the EMG activities of the other muscles were not significantly different between the conditions (p>.05). These results suggest that the stair up and down maintaining hip internal rotation was could be a contributing factor on patellar lateral tracking.

목차

Abstract
Ⅰ. 서론
Ⅱ. 연구방법
Ⅲ. 결과
Ⅳ. 고찰
Ⅴ. 결론
인용문헌

키워드

Hip internal rotation Patellofemoral pain syndrome Stair up and down Tensor fascia latae Vastus lateralis Vastus medialis oblique EMG activity