An EMG Analysis Study of Grinding Work by Posture and Working Time

연삭작업시 작업자세와 작업시간에 따른 근전도 분석에 관한 연구

  • 배동철 (부경대학교 공과대학 안전공학과) ;
  • 장성록 (부경대학교 공과대학 안전공학과)
  • Published : 2001.03.01


Posture of the upper limbs in field works is known to be an important risk factor associated with CTD(Cumulative Trauma Disorders). In particular, uncomfortable posture and highly repetitive works in shipbuilding industry(for instance, sand blasting, grinding and blast painting, etc) made workers exposed to a great risk of injuries. The purpose of this paper is to analyze recruitment pattern of the muscles according to posture(joint angle displacement) during grinding. In this study, EMG signals of pectoralis major, latissimus dorsi, and posterior deltoid muscle were measured and analyzed from FlexComp EMG solution. And subjective ratings of perceived exertion were made using Borg's CR-10 rating scale.