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A Study on the Push and Pull Strength for the Design of Cart Handle
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 Title & Authors
A Study on the Push and Pull Strength for the Design of Cart Handle
Woo, Dong-Pil; Lee, Dong-Choon;
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Objective: Product design process without considering the strength of the user can cause the excessive burden on musculoskeletal system of human body. Since the muscle strength will vary depending on the body posture, the design of product should consider the characteristics of body posture. This study was performed to investigate the effects of forearm postures on the push and pull strength. Background: Overexerted force has been identified to cause musculoskeletal disorders. It is important to know the push and pull strength exerted by human when designing so that exerted force does not exceed the safety limits. Method: Maximum isometric push and pull strength of left, right and both hands were measured according to forearm postures with pronation, neutral and supination. For the study, 66 male and 30 female undergraduate students were participated as subjects. All subjects were normal and healthy with no clinical history. Results: The results showed that the push strength of male and female were 93.3% and 85.4% of pull strength. It showed that the strength of one-hand was 72.1~81.0% of the strength of two-hands, and the strength of left hand was 93.1~95.8% of the strength of right hand. The strength of female was 62% of the one of male. It was found that the strength with pronation was reduced up to 20% compared to the strength with neutral posture. Conclusion: Push and pull strength of male and female were reduced when forearm was rotated extremely. Application: The results of this study will be used for the prevention of work related musculoskeletal disorders and design of industrial equipment.
Strength;Exerted force;MVC;Forearm posture;Pronation;Supination;
 Cited by
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대한안전경영과학회지, 2014. vol.16. 4, pp.371-378 crossref(new window)
견인곡사포용 이동대차형 포탄 이송장치의 인간공학적 적합성 검증,박성호;

대한산업공학회지, 2016. vol.42. 3, pp.165-172 crossref(new window)
Agrawal, K.N., Singh, R.K.P. and Satapathy, K.K., Isometric strength of agricultural workers of Meghalaya: A case study of an Indian population, International Journal of Industrial Ergonomics, 39(6), 919-923, 2009. crossref(new window)

Ayoub, M.M. and Mital, A., Manual Materials Handling, Taylor & Francis, 1989.

Chaffin, D.B., Andres, R.O. and Garg, A., Volitional postures during maximal push/pull exertions in the sagittal plane, Human Factors, 25(5), 541-550, 1983. crossref(new window)

Chung, M.K., Kee, D. and Kim, T.B., A study of maximum voluntary strength evaluation for Korean workers, Journal of the Ergonomics Society of Korea, 18(1), 141-153, 1992.

Cirello, V.M., "The effects of distance on psychophysically determined pushing and pulling tasks for female industrial workers", Proceedings of the Human Factors Society 48th Annual Meeting, New Orleans, LA, 1402-1406, 2004.

Daams, B.J., Static force exertion in postures with different degrees of freedom, Ergonomics, 36(4), 397-406, 1993. crossref(new window)

Das, B. and Wang, Y., Isometric pull-push strength in workspace: 1. Strength profiles, International Journal of Occupational Safety and Ergonomics, 10(1), 43-58, 2004. crossref(new window)

Garg, A. and Bellar, D., One-handed dynamic pulling strength with special reference speed, handle height and angels of pulling, International Journal of Industrial Ergonomics, 6, 231-240, 1990. crossref(new window)

Grandjean, E., Fitting the Task to the man, Taylor & Francis, 1980.

KATS, Size Korea, 2007.

Kim, H.K., Comparison of muscle strength for one-hand and two-hands lifting activity, Journal of the Ergonomics Society of Korea, 26(2), pp.35-44, 2007. crossref(new window)

Kim, J.H., Park, S.J. and Kim, C.J., A study on muscular strength of Korean young males, Journal of the Ergonomics Society of Korea, 9(2), 37-46, 1990.

Klein, B.P., Jensen, R.C. and Sanderson, L.M., Assessment of worker's compensation claims for back strains/sprains, Journal of Occupational Medicine, 26 (6), 443-448, 1984. crossref(new window)

KOSHA, Occupational injuries and illnesses statistics, 2010.

KOSHA, Occupational injuries and illnesses statistics, 2011.

Kumar, S., Upper body push-pull strength of normal young adults in sagittal plane at three heights, International Journal of Industrial Ergonomics, 15(6), 427-436, 1995. crossref(new window)

Kumar, S., Narayan, Y. and Bacchus, C., Symmetric and asymmetric twohanded pull-push strength of young adults, Human Factors, 37(4), 854-865, 1995. crossref(new window)

Mital, A., Nicholson, A.S. and Ayoub, M.M., A Guide to Manual Materials Handling, Taylor & Francis, London, 1997.

Moon, M.K. and Kim, C.H., "A study for the measure and application of maximum push strengths for Korean male/female at different working positons and handle types", Proceedings of the Ergonomics Society of Korea, 177-180, 2006.

Snook, S.H., The design of manual handling tasks, Ergonomics, 21(12), 963-985, 1978. crossref(new window)

Tiwari, P.S., Gite, L.P., Majumder, J., Pharade, S.C. and Singh, V.V., Push/pull strength of agricultural workers in central India, International Journal of Industrial Ergonomics, 40(1), 1-7, 2010. crossref(new window)

US Department of Health and Human Services, Work Practices Guide for Manual Lifting, DHHS (NIOSH), Publication No. 81-122, C.D.C., NIOSH. Cincinnati, OH, 1981.

Warwick, D., Novak, G. and Schultz, A., Maximum voluntary strengths of male adults in some lifting, pushing and pulling activities. Ergonomics, 23(1), 49-54, 1980. crossref(new window)

Yoon, H.Y. and Kim, E.S., Muscle strength measurement using shoulder and upper joint for Korean young-aged, Journal of the Ergonomics Society of Korea, 28(3), 125-134, 2009. crossref(new window)