척주 기립자세와 굽힌자세에서 어깨관절 외전각도 변화에 따른 어깨뼈 주위 근 활성도 분석

• 영문명: Analysis of Muscle Activity of the Scapular Rotators With Changes of Shoulder Abduction Angle in Both Erect and Slouched Trunk Position
• 발행기관: 한국전문물리치료학회
• 저자명: 김덕화(Kim Duck-hwa) 최종덕(Choi Jong-duk) 오재섭(Oh Jae-seop)
• 간행물 정보: 『한국전문물리치료학회지』한국전문물리치료학회지 제11권 제1호, 45~52쪽, 전체 8쪽
• 주제분류: 의약학 > 의학일반
• 파일형태: PDF
• 발행일자: 2004.03.31

영문 초록

Altered scapular kinematics in the scapular joint is commonly believed to be a factor contributing to trunk posture. The purpose of this study was to analyze the muscle activity with several changes of the shoulder angle. Tests were performed on 10 male subjects by repeated measures. Each subject was measured while sitting in both erect and slouched trunk positions. In each sitting posture, a three-dimensional motion analysis measurement was used to measure thoracic angle and shoulder abduction angle. Measurements were taken with the shoulder abdcution angle at 0°, 30°, 60°, 90°, 120°, and 150°. By using surface Electromyography (EMG) electrodes, we recorded the activity of the upper trapezius, middle trapezius, lower trapezius, middle deltoid, and serratus anterior muscle while the subject held a 4 ㎏ weight at each angle. The mean of root mean square (RMS) of EMG activity was calculated. The middle trapezius, lower trapezius, and middle deltoid muscle activity showed significantly higher results but serratus anterior muscle activity showed significantly lower results (p<.05). With the shoulder angle increased, the muscle activity was also significantly increased (p<.05). In conclusion, the thoracic spine posture significantly affects the scapular muscle during scapular plane abduction, and the slouched posture is associated with increased trapezius muscle activity and with decreased serratus anterior muscle activity.

목차

Abstract

Ⅰ. 서론

Ⅱ. 연구방법

Ⅲ. 결과

Ⅳ. 고찰

Ⅴ. 결론

인용문헌

키워드

Muscle activity Shoulder abdcution angle Trunk position