The Effects of Short Break Time and Mouse Clicks on the VDT Work by using Subjective Discomfort

VDT 작업시 짧은 휴식시간과 마우스 클릭이 주관적 불편도에 미치는 영향에 관한 연구

  • Kim, Yu-Chang (Department of Industrial Management Engineering, Dong-Eui University) ;
  • Lee, Jun-Pal (Department of Industrial Management Engineering, Dong-Eui University)
  • 김유창 (동의대학교 산업경영공학과) ;
  • 이준팔 (동의대학교 산업경영공학과)
  • Published : 2008.04.30

Abstract

This paper suggests the best work conditions, including short break time and number of mouse clicks on a computer, to prevent MSDs(Musculoskeletal Disorders) on VDT(Visual Display Terminal) work. Discomfort measures are calculated according to the Borg's CR-10 Scale. The short break time conditions are grouped into 7, 15, and 30 seconds after every 10-minute work period and the number of mouse clicks are divided into 10 clicks/min, 20clicks/min, and 30clicks/min. The result of the ANOVA on the shift value of subjective discomfort shows the following: 1) Regarding the break time and the number of mouse clicks, there are statistical differences between the measured values for the neck and the wrist(p<0.05). 2) Regarding the number of mouse clicks, there are statistical differences between the measured values for the shoulder and the forearm(p<0.1). 3) Regarding the break time and the number of mouse clicks, there are no statistical differences between the measures values for the eyes, upper arms and back(p<0.1).

Keywords

VDT;MSDs;short break time;the number of mouse clicks;subjective discomfort

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