극장식 계단강의실 의자와 일반강의실 의자에서 받아쓰기 과제 수행 시 등세모근육의 근 활성도 비교

• 영문명: A Comparison of Trapezius Muscle Activity While Performing a Dictation Task, Sitting in an Auditorium Chair and a Classroom Chair
• 발행기관: 한국전문물리치료학회
• 저자명: 김태진(Tae-jin Kim) 조상현(Sang-hyun Cho) 신헌석(Heon-seock Cynn)
• 간행물 정보: 『한국전문물리치료학회지』한국전문물리치료학회지 제19권 제1호, 46~55쪽, 전체 10쪽
• 주제분류: 의약학 > 의학일반
• 파일형태: PDF
• 발행일자: 2012.01.31

영문 초록

The purpose of this study was to investigate the effect of the two different types of chairs on trapezius muscle activation during dictation tasks. Seventeen university students, each of whom were within ±1 standard deviation of the mean Korean standard body size, voluntarily participated in this study. Surface electromyography was used to collect electrical signals from both the upper and lower trapezius muscles. Amplitude Probability Distribution Function (APDF) was performed to analyze the muscle activity. The findings of this study were 1) The backrest-point height of the auditorium chair and the height, length and width of the connected desk were shorter than what was suggested by the KS. Another difference was that the auditorium chair had a bigger angle of the backrest compared to the classroom chair. 2) Regarding within-subject effect the sole statistically significant difference was found between activation of the upper trapezius muscle. The upper trapezius muscle’s %RVC in the APDF 10th-50th-90th percentile was statistically higher for participants sitting in the auditorium chair than for participants sitting in the classroom chair (p＜.05). 3) There was an interaction effect between the ‘two chair-types’ and the ‘two muscle-sides’ in the APDF 10th-50th percentile (p＜.05). 4) There was an interaction effect between the ‘two chair-types’ and the ‘three gaze-direction’ in the APDF 90th percentile (p＜.05). The findings of this study indicated that maintaining a writing posture for a prolonged period of time in an auditorium chair significantly increased the left upper trapezius muscle activation compared to a classroom chair.

목차

Abstract

Ⅰ. 서론

Ⅱ. 연구방법

Ⅲ. 결과

Ⅳ. 고찰

Ⅴ. 결론

인용문헌

키워드

Amplitude Probability Distribution Function Chair Surface electromyography Trapezius muscle