A Study on Evaluation of Neck Muscle Workload in Static Work Using EMG

정적인 자세에서 근전도를 이용한 목 근육의 작업부하 평가

  • Kim, Yu-Chang (Department of Industrial Management Engineering, Dongeui University) ;
  • Jeong, Hyun-Wook (Daewoo Shipbuilding & Marine Engineering Co,, LTD.) ;
  • Jang, Seong-Rok (Division of Safety Engineering, Pukyong National University)
  • Published : 2005.12.31

Abstract

Computer dominated jobs and industrial automation have rapidly created work-related musculoskeletal disorders(WMSDs) and WMSDS are expanding to employee of other general industry. Specific risk factors associated with WMSDs include repetitive motion, heavy lifting, forceful exertion, contact stress, vibration awkward posture and rapid hand and wrist movement. The purpose of this paper is to analyze the effects of the neck muscle workload according to posture(joint angle) and load weight. Seven male students participated in this study. To analyze neck muscle workload was studied on electromyographic(EMG) activity for sternocleidomastoid and trapezius, was subjectively rated using a Borg's CR-10 scale. ANOVA showed that the CR-10 ratings and most EMG root-mean-square (RMS) value were statistically significant improvement according to posture(joint angle) and load weight. The results of this study indicate the joint angle and weight of neck muscle workload to provide safe working conditions. To reduce the large number and severity of WMSDs employees have been experiencing, we need to redesign the job in workplace to identify and control hazards that are reasonably likely to be causing or contributing to the WMSDs.

Keywords

References

  1. 김유창, 정현욱, '미국의 인간공학 프로그램과 한국에서의 적용 방안', 한국산업안전학회 추계학술대회, 2000
  2. 김유창, 최용환, '전화번호 안내원의 근골격계질환 실태에 관한 연구', 대한인간공학회 추계학술대회 논문집, 2000
  3. 김유창, 이태현, 정현욱, '맨홀작업의 근골격계질환 실태에 관한 연구', 안전경영과학회 춘계학술대회 논문집, 2001
  4. 김철홍, 김승남, 이준엽, 윤덕기, 조성애, '자동차공장 작업자의 근골격계질환 실태에 관한 연구 : Part I', 대한인간공학회 춘계학술대회 논문집, 2000
  5. 노동부, ''99 산업재해분석', 2000
  6. 이유정, 정민근, '유통 운수업 종사자들의 생리부하 평가', 대한인간공학회 추계학술대회 논문집, 1998
  7. 정민근, 최경임, 송영웅, 이인석, 이명수, '정비작업에 대한 인체역학적 부하 및 작업자세 평가', 대한인간공학회지, 제16권, 제3호, 1997
  8. 기도형, '작업자세부하 평가를 위한 자세 분류체계의 연구 현황 - 관측법을 중심으로', 한국산업안전학회지, 제15권, 제4호, 2000
  9. National Institute for Occupational Safety and Health (NIOSH), 'Musculoskeletal Disorders and Workplace Factors : A Critical Rewiew of Epidemiologic Evidence for Work-Related Musculoskeletal Disorders of the Neck, Upper Extremity, and Low Back', DHHS(NIOSH) Publication, pp. 97-141, 1997
  10. S. Scutter, K. S. Turker, R. Hall, 'Headaches and neck pain in farmers', The Australian Journal of Rural Health, Vol. 5, No. 1, pp. 2-5, 1997 https://doi.org/10.1111/j.1440-1584.1997.tb00226.x