대퇴사두근 근력 운동 시 고관절 중립 자세와 내전 자세에 따른 내측광근과 외측광근의 근수축 개시 시간 차이 비교

• 영문명: Comparisons of Vastus Medialis and Vastus Lateralis EMG Onset Time During Quadriceps Strengthening Exercise in Neutral and Adducted Hip Positions
• 발행기관: 한국전문물리치료학회
• 저자명: 최보람(Bo-ram Choi) 김민희(Min-hee Kim) 전혜선(Hye-seon Jeon)
• 간행물 정보: 『한국전문물리치료학회지』한국전문물리치료학회지 제16권 제3호, 42~49쪽, 전체 8쪽
• 주제분류: 의약학 > 의학일반
• 파일형태: PDF
• 발행일자: 2009.09.30

영문 초록

This study examined the vastus medialis oblique (VMO) and the vastus lateralis (VL) onset time differences (OTD) during quadriceps contraction in different hip positions. Twelve healthy subjects were recruited (four men, eight women). Surface EMG activities of the VMO and VL were measured during a quadriceps strengthening exercise in a long sitting condition and in a sitting at a chair with feet hanging condition. For each condition, subjects were tested in two hip positions (neutral and adduction). The OTD between the two muscles was calculated for each condition, by subtracting the onset time of the VL from the VMO. Therefore, the negative value of OTD represent earlier EMG onset of the VMO compared to the VL. The OTD was not significantly different between the hip neutral and the hip adduction position in the long sitting condition (p=.064). However, the OTD was significantly different between the hip neutral position (15.83±109.51 ㎳) and hip adduction position (-5.58±121.08 ㎳) during the sitting at a chair with feet hanging condition (p=.047). The negative OTD value in the hip adduction condition during quadriceps strengthening exercises is the result of earlier onset of the VMO than VL. Therefore, quadriceps contraction in the hip adduction position can prevent the risk of patella lateral tracking. We expect that quadriceps strengthening exercise in the hip adduction position will be a safe way to prevent patellofemoral pain syndrome resulting from abnormal patella lateral tracking.

목차

Abstract

Ⅰ. 서론

Ⅱ. 연구방법

Ⅲ. 결과

Ⅳ. 고찰

Ⅴ. 결론

인용문헌

키워드

Onset time difference Patellofemoral pain syndrome Quadriceps strengthening exercise