Psychophysical Load for Females Depending on Arm Posture, Repetition of Wrist Motion and External Load

여성의 팔 자세, 손목 동작 반복과 외부 부하에 따른 심물리학적 부하

  • Kee, Do-Hyung (Department of Industrial and Systems Engineering, Keimyung University)
  • 기도형 (계명대학교 산업시스템공학과)
  • Published : 2006.06.30

Abstract

This study investigated effect of arm posture, wrist motion repetition and external load on perceived discomfort through an experiment. Eleven female college students participated in the experiment, where shoulder, elbow and wrist motion, wrist motion repetition, and external load were used as independent variables. The results showed that only external load had a significant effect on perceived discomfort. The perceived discomfort linearly increased with external load. Based on the results of this and the previous study for males, it was concluded that effect of external load on perceived discomfort was larger than that of other posture and motion repetition related variables. This implies that effect of external load is the most important factor considered in the first place when assessing postural load.

Keywords

perceived discomfort;external load;psychophysical load

References

  1. 기도형, '손목 동작의 반복과 외부 부하에 따른 심물리학적 부하', 한국안전학회지, 제19권, 제4 호, pp. 123-128, 2004
  2. D. E. Treaster, D. Burr, 'Gender differences in prevalence of upper extremity musculoskeletal disorders', Ergonomics, Vol. 47, No. 5, pp. 495-526, 2004 https://doi.org/10.1080/00140130310001638171
  3. M. L. Lin, R. G. Radwin, S. H. Snook, 'A single metric for quantifying biomechanical stress in repetitive motions and exertions', Ergonomics, Vol. 40, No. 5, pp. 543-558, 1997 https://doi.org/10.1080/001401397188026
  4. M. L. Lin, R. G. Radwin, 'Agreement between a frequency-weighted filter for continuous biomechanical measurements of repetitive wrist flexion against a load and published psychophysical data', Ergonomics, Vol. 41, No. 4, pp. 459-475, 1998 https://doi.org/10.1080/001401398186946
  5. D. Kee, 'Gender differences in rankings of joint motion stressfulness based on psychophysical scaling', International Journal of Industrial Ergonomics, Vol. 35, pp. 461-469, 2005 https://doi.org/10.1016/j.ergon.2004.11.001
  6. 기도형, '지각 불편도에 대한 외부 부하, 상지 자세의 영향', 산업안전학회지, 제17권, 제4호, pp. 178-183, 2002
  7. K.H.E. Kroemer, 'Cumulative trauma disorders: Their recognition and ergonomics measures to avoid them', Applied Ergonomics, Vol. 20, No. 4, pp. 274-2, 1989 https://doi.org/10.1016/0003-6870(89)90190-7
  8. J. Winkel, S. E. Mathiassen, 'Assessment of physical work load in epidemiologic studies: concepts, issuses and operational considerations', Ergonomics, Vol. 73, No. 6, pp. 979-988, 1994
  9. M. K. Chung, I. Lee, D. Kee, 'Assessment of postural load for lower limb postures based on perceived discomfort', International Journal of Industrial Ergonomics, Vol. 31, pp. 17-32, 2003 https://doi.org/10.1016/S0169-8141(02)00115-4
  10. B. Niebel, A. Freivalds, Methods standards & work design, McGraw-Hill, New York, 1999
  11. M. C. Miedema, M. Douwes, J. Dul, 'Recommended maximum holding times for prevention of discomfort of static standing postures', International Journal of Industrial Ergonomics, Vol. 19, pp. 9- 18, 1997 https://doi.org/10.1016/0169-8141(95)00037-2
  12. 한국산업안전공단, 산업재해원인조사, 2003
  13. W. S. Marras, 'Occupational low back disorders causation and control', Ergonomics, Vol. 43, No. 7, pp. 880-902, 2000 https://doi.org/10.1080/001401300409080
  14. E. J. Carey, T. J. Gallwey, 'Effects of wrist posture, pace and exertion on discomfort', International Journal of Industrial Ergonomics, Vol. 29, pp. 85-94, 2002 https://doi.org/10.1016/S0169-8141(01)00053-1
  15. S. H. Han, M. Song, J. Kwak, 'A systematic method for analyzing magnitude estimation data', International Journal of Industrial Ergonomics, Vol. 23, pp. 513-5249, 1999 https://doi.org/10.1016/S0169-8141(98)00017-1
  16. 동아일보, 여성 경제활동인구 급증, 2005. 7. 20
  17. G. A. Gescheider, Psychophysics: Method, theory, and application, Lawrence Erlbaum Associates, London, 1985