Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
권호 표지

A study on coupling effect during lifting

들기 작업시 손잡이의 영향에 관한 연구

  • Published : 2003.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

Despite rapid technological advance and increased automation facilities, many jobs and activities in our living require manual materials handling(MMH). These include wide variety of activities such as moving things, lifting bags. boxes or cartons, etc. Many studies found that handle could affect on maximum acceptable weight of lifting, but there were few studies f3r the effects of work posture and coupling in lifting tote box. This study performed that ten male college students were required to lift a tote box with and without handle for three postures (bending, straight, right angle posture). From the experiment, following results were obtained. (1) MVC reduced maximum 23% by type of handle. (2) MVC was highest in straight posture, but was lowest in right angle posture. (3) As a result of ANOVA, MVC paid attention to posture and coupling. (p<0.01) (4) To all handle types, biceps brachii activity was increased in right angle posture. but reduced in straight posture. (5) To all posture, biceps brachii activity was most lively in no handle. The results of MVC measurement, subjective rating, EMG analysis, statistic analysis showed that maximum acceptable weight of lifting was influenced by type of handle and straight posture was more comfortable than other postures. Based on these results, it was concluded that acceptable weight of lifting has to differ for work posture and coupling.

Keywords

References

  1. Sanders, M. S. and E. J. McConnick. 'Human Factors in Engineeringand Design,' Seventh Edition, McGraw-Hili, Inc., New York, 1992
  2. 임종근, 근골격계질환 발생현황과 예방대책, 월간 무재해, 2002, 2
  3. U.S Department of Labor, Bureau of Labor Statistics, 1997. 3
  4. 노동부, 1999-2002 산업재해분석, 2003
  5. 장성록, 'Power surge tool line 의 인간공학적 평가에 관한 연구,' 산업안전학회지, 제13권, 제1호, 147-154,1998
  6. 장성록 '냉동창고 출하작업의 신체부담 분석에 관한 연구,' 산업안전학회지. 제14권, 제4호, 192-198, 1999
  7. 배동철, 장성록, '연삭작업시 작업자세와 작업시간에 따른 근전도 분석에 관한 연구,' 산업안전학회지, 제16권, 제1호, 79-83, 2001
  8. 박현진, 장성록, '허리비틀림 각도에 따른 근육활동 분석,' 산업안전학회지, 제16권, 제2호, 117-120, 2001
  9. 성창한, 배동철, 장성록,' 상자들기 작업시 자세 및 손잡이 형태가 발휘근력에 미치는 영향,'한국산업안전학회 추계학술 논문집, 371-376, 2002
  10. Garg, A. and Saxena, U. 1980, Container characteristics and maximum acceptable weight of lift, Human Factors, 22, 487-495 https://doi.org/10.1177/001872088002200409
  11. Lodge, M., Magnitude Scaling : Quantitative measurement of options, Beverly Hills, CA : Sage, 1981
  12. 장성록, '팔꿈치 관절 굽힘 동작에 동원되는 근육의 상호작용에 관한 연구,' 서울대, 박사학위논문, 1992
  13. Drury, C.G, Deeb, J.M., Hartman, B., Wooley, S., Drury, C.E. and Gallagher, S. Symmetric and asymmetric manual materials handling. Part 1. Physiology and Psychophysics, Ergonomics, Vol. 32, pp. 467-489, 1989
  14. Smith, J.L. and Jiang, B.C. A manual materials handling study of bag lifting, American Industrial Hygiene Association Journal, Vol. 45, pp. 505-508, 1984 https://doi.org/10.1080/15298668491400188
  15. Waters, T.R., Putz-Anderson, V., and Garg, A. Applications manual for the revised NIOSH lifting equation. Cincinati, OH: DHHS (NlOSH), 1994
  16. Davis, K.G., Marras, W.S. and Waters, T.R. Reduction of spinal loading through the use of handles, Ergonomics, Vol. 41, pp. 1155-1168, 1998 https://doi.org/10.1080/001401398186450