Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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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
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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

References

  1. World Health Organization(WHO), 'Visual Display Terminal and Worker's Health', Geneva, pp. 85-158, 1987
  2. 노동부, '산업재해분석', 2001-2006
  3. M. Fagarasanu, S. Kumar, 'Carpal tunnel syndrome due to keyboarding and mouse tasks: a review', International Journal of Industrial Ergonomics, Vol. 31, No. 2, pp. 119-136, 2003 https://doi.org/10.1016/S0169-8141(02)00180-4
  4. Bureau of Labor Statistics, News United States Department of Labor 2000, 2002
  5. S. Konz, 'Work/rest: part I - Guidelines for the practitioner', International Journal of Industrial Ergonomics, Vol. 22, No. 1, pp. 67-71, 1998 https://doi.org/10.1016/S0169-8141(97)00068-1
  6. S. Konz, 'Work/rest: part II - The scientific basis (knowledge base) for the guide', International Journal of Industrial Ergonomics, Vol. 22, No. 1, pp. 73-99, 1998 https://doi.org/10.1016/S0169-8141(97)00069-3
  7. 7) T. Misawa, K. Yosino, S. Shigeta, 'An experimental study on the duration of a single spell of work on VDT(visual display terminal) performance', Sangyoigaku, Japanese Journal of Industrial Health, Vol. 26, No. 4, pp. 296-302, 1984 https://doi.org/10.1539/joh1959.26.296
  8. S.L. Sauter, N.G. Swanson, 'The effects of frequent rest breaks on performance and well-being in repetitive computer work', Work with Display Units '92, Technische Universitat Berlin, D-52, 1992
  9. N.G. Swanson, S.L. Sauter, 'The effects of exercise on the health and performance of data entry operators', Work with Display Units '92(Elsevier, Amsterdam), pp. 288-291, 1993
  10. R. Balci, F. Aghazadeh, 'The effect of work-rest schedules and type of task on the discomfort and performance of VDT users', Ergonomics, Vol. 46, No. 5, pp. 455-465, 2003 https://doi.org/10.1080/0014013021000047557
  11. Kong-King Shieh, Ming-Te Chen, 'Effects of screen color combination, work-break schedule, and workpace on VDT viewing distance', International Journal of Industrial Ergonomics, Vol. 20, No. 1, pp. 11-18, 1997 https://doi.org/10.1016/S0169-8141(96)00026-1
  12. R.A. Henning, E.A. Callaghan, A.M. Ortega, G.V. Kissel, J.I. Guttman, H.A. Braun, 'Continuous feedback to promote self-management of rest breaks during computer use', International Journal of Industrial Ergonomics, Vol. 18, No. 1, pp. 71-82, 1996 https://doi.org/10.1016/0169-8141(95)00032-1
  13. S. Pheasante, 'Ergonomics, Work and Health', pp. 245, 1991
  14. Niche Software Ltd., 'An Overview of the Research on RSI and the effectiveness of Breaks', Research on RSI prevention, Breaks and Micropauses, http://www.workpace.com
  15. 노동부, '영상표시단말기(VDT) 취급근로자 작업관리지침', 고시 제2004-50호, 2004
  16. M. Fogelman, G. Brogmus, 'Computer mouse use and cumulative trauma disorders of the upper extremities', Ergonomics, Vol. 38, No. 12, pp. 2465-2475, 1995 https://doi.org/10.1080/00140139508925280
  17. P.J. Keir, J.M. Bach, D. Rempel, 'Effects of computer mouse design and task on carpal tunnel pressure', Ergonomics, Vol. 42, No. 10, pp. 1350-1360, 1999 https://doi.org/10.1080/001401399184992
  18. C. Jensen, I. Finsen, K. Sogaard, H. Christensen, 'Musculoskeletal symptoms and duration of computer and mouse use', International Journal of Industrial Ergonomics, Vol. 30, No. 4, pp. 265-275, 2002 https://doi.org/10.1016/S0169-8141(02)00130-0
  19. B.A. Farris, H.R. Landwehr, J.E. Fernandez, R.K. Agarwal, 'Physiological evaluation of mouse pad placement', Advance in Occupational Ergonomics and Safety, IOS Press, 1998
  20. A. Cooper, L. Straker, 'Mouse versus keyboard use: A comparison of shoulder muscle load - Vol. 1. Work With Display Units '95', International Journal of Industrial Ergonomics', Vol. 22, No. 4, pp. 351-357, 1998 https://doi.org/10.1016/S0169-8141(97)00088-7
  21. L.K. Karlqvist, M. Hagberg, M. Koster, M. Wenemark, R. Anell, 'Musculoskeletal Symptoms among Computer-assisted Design(CAD) Operators and Evaluation of a Self-assessment Questionnaire', International Journal of Occupational and Environmental Health, Vol. 2, No. 3, pp. 185-194, 1996 https://doi.org/10.1179/oeh.1996.2.3.185
  22. G. Borg, 'Psychophysical scaling with applications in physical work and the perception of exertion', Scandinavian Journal of Work, Environment & Health, Vol. 16, No. 1, pp. 55-58, 1990 https://doi.org/10.5271/sjweh.1815
  23. Engineerlive, 'Implementing speech recognition technology can dramatically improve productivity for CAD operators and other computer users', www. engineerlive.com, 2007
  24. Niche Software Ltd., 'WorkPace Computer Use Analysis Report', pp. 7, 2004
  25. Pro/ENGINEER Wildfire, 'Pro/ENGINEER Wildfire Productivity Gains', www.ptc.com, pp. 2, 2003
  26. Engineerlive, Implementing speech recognition technology can dramatically improve productivity for CAD operators and other computer users, www. engineerlive.com, 2007