THE EFFECT OF TRANSFER DISTANCE TO LOWER BACK TWISTING AND BENDING PATTERNS IN MANUAL TRANSFER TASK
DOI:
https://doi.org/10.11113/jurnalteknologi.v83.14559Keywords:
Transfer distance, lower back posture, ergonomics, manual material handling, palletizing taskAbstract
Manual material handling (MMH) activities utilize human’s effort with minimal aid from mechanical devices. MMH is typically associated with poor lower back posture which can lead to lower back injury. The likelihood to develop musculoskeletal disorders (MSDs) increases when poor working posture exist in combination with repetition and/or forceful exertion. In manual transfer activity, the distance between lifting origin and destination could affect workers’ exposure on poor lower back working posture. An experimental study was conducted to investigate the effect of transfer distance to lower back twisting and bending pattern in manual transfer activity. Positional body joints data of 26 male subjects were captured using the combination of motion capture (MOCAP) system with MVN studio software. Calculated data were plotted against time to track subjects’ lower back twisting and bending behavior. In general, longer the transfer distance would result in smaller twisting angle but higher bending angle. Statistical analysis in this study suggests 0.75m to 1.00m as the optimum transfer distance to balance lower back twisting and bending exposure on workers. This study is envisioned to provide insights for practitioners to consider space requirements for MMH activity to minimize lower back twisting and bending, and consequently the development of MSDs.
References
Snook, S. H., Campanelli, V., and Hart, J. W. 1978. A study of three preventive approaches to low back injury. Journal of Orthopaedic Medicine. 20: 478-481.
DOI : https://doi.org/10.1097/00043764-197807000-00009
Bigos, S. J., Spengler, D. M., Martin, N. A., Zech, J., Fischer, L., Nachemson, A., and Wamg, M. H. 1986. Back injury in industry: a retrospective study II injury factors. Spine. 11: 246-251.
DOI : https://doi.org/10.1097/00007632-198604000-00011
Canadian Center of Occupational Health and Safety (CCOHS). 2016. Retrieved from: https://www.ccohs.ca/oshanswers/ergonomics/mmh/mmhintro.html
Shamsuddin, K. A., Ani, M. N. C., Ab-Kadir, A. R., and Osman, M. H. 2014. Analysis on the Work-Related Musculoskeletal Disorders (WMSD’s) Based on Ergonomic Study in Case of Industry Study. International Journal Engineering Research. 3(4): 190-195.
Yahya, N. M. and Zahid, M. N. O. 2018. Work-related musculoskeletal disorders (WMDs) risk assessment at core assembly production of electronic components manufacturing company. IOP Conference Series: Materials Science and Engineering. 319: 1-7.
DOI : https://doi.org/10.1088/1757-899X/319/1/012036
Zein, R. M., Halim, I., Azia, N. A. Saptari, A., and Kamat, S. R. 2015. A Survey on Working Postures Among Malaysian Industrial Workers. 2nd International Materials, Industrial, and Manufacturing Engineering Conference, MIMEC2015. 2: 450-459.
DOI : https://doi.org/10.1016/j.promfg.2015.07.078
Jaffar, N. A. and Abdol Rahman, M. N. 2017. Review on risk factors related to lower back disorders at workplace. IOP Conference Series: Mater in Science Engineering. 226: 12-35.
DOI : https://doi.org/10.1088/1757-899X/226/1/012035
Rahman, M. N. A., Zakaria, N. H., Masood, I., Adzila, S., and Nasir, N. F. 2016. Risk assessment for assessing the subjective occupant seating discomfort related office works. Information. 19(7B): 3025-3030.
Jaffar, N., Abdul-Tharim, A., and Mohd-Kamar. 2011. A literature review of ergonomics risk factors in construction industry. Procedia Engineering. 20: 89-97.
DOI : https://doi.org/10.1016/j.proeng.2011.11.142
Wang, D., Dai, F., and Ning, X. 2015. Risk Assessment of Work-related Musculoskeletal Disorders in Construction: State-of-the-Art Review. Journal of Construction Engineering and Management. 141(6): 1-15.
DOI : https://doi.org/10.1061/(ASCE)CO.1943-7862.0000979.
Social Security Organisation. 2014. Annual Report. Retrieved March 15, 2018, from https://www.perkeso.gov.my/images/laporan_tahunan/Laporan_Tahunan_2014.pdf
Halim, I., Abdullah, R., and Ismail, A. R. 2012. A Survey on Work-related Musculoskeletal Disorder (WMSDs) among Construction Workers. Journal of Occupational Safety and Health. 9:1-6.
Marras, W. S. and Granata, K. P. 1997. The development of an EMG-assisted model to assess spine loading during whole-body free-dynamic lifting. Journal of Electromyography and Kinesiology. 7(4): 259-268.
DOI : https://doi.org/10.1016/S1050-6411(97)00006-0
Radin Umar, R. Z., Ahmad, N., Halim, I., Lee, P. Y., and Hamid, M. 2019. Design and Development of an Ergonomic Trolley-Lifter for Sheet Metal Handling Task: A Preliminary Study. Safety And Health At Work. 10(3): 327-335.
DOI : https://doi.org/10.1016/j.shaw.2019.06.006
Suryoputro, M. R., Wildani, K., and Sari, A. D. 2018. Analysis of Manual Handling Activity to Increase Work Productivity (Case study: Manufacturing company). MATEC Web of Conferences. 154: 1-5.
DOI : https://doi.org/10.1051/matecconf/201815401085
Dul, J. and Neumann, W. P. 2009. Ergonomic Contributions to Company Strategies. Applied Ergonomics. 40(4): 745-752.
DOI : https://doi.org/10.1016/j.apergo.2008.07.001
Kjaer-Hansen, J. 1999. Human Factors Module: A Business Case for Human Factor Investment (Industry report HUM.ET1.ST13.4000-REP-02). Retrieved August 20, 2018, from European Organisation for the Safety of Air Navigation.
Haslegrave, C. M. 2007. What do we mean by a ‘working posture’?. Ergonomics. 37: 781-799.
DOI : https://doi.org/10.1080/00140139408963688
Ozkaya, K., Polat, O., and Kalinkara, V. 2018. Physical Workload Assessmemt of Furniture Industry Workers by Using OWAS Method. The Ergonomics Open Journal. 11: 11-19.
DOI : https://doi.org/10.2174/1875934301811010011
Mehta, J. P., Kim, T. H., Weiler, M. R., and Lavender, S. A. 2013. Effects of transfer distance on spine kinematics for de-palletizing tasks. Journal of occupational and environmental hygiene. 11(1): 1-8.
DOI : https://doi.org/10.1080/15459624.2013.839878
Plamondon, A., Delisle, A., Bellefeuille, S., Denis, D., Gagnon, D., Larivière, C., and IRSST MMH Research Group. 2014. Lifting Strategies of Expert and Novice Workers During a Repetitive Palletizing Task. Applied Ergonomics. 45: 471-481.
DOI : https://doi.org/10.1016/j.apergo.2013.06.008
Plamondon, A., Gagnon, M., and Gravel, D., 1995. Moments at the L5/S1 joint during asymmetrical lifting: effects of different load trajectories and initial load positions. Clinical Biomechanics. 10: 128-136.
DOI : https://doi.org/10.1016/0268-0033(95)93702-U
Granata, K. P. and Marras, W. S. 1995. An EMG-assisted model of trunk loading during free-dynamic lifting. Journal of Biomechanics. 28: 1309-1317.
DOI : https://doi.org/10.1016/0021-9290(95)00003-Z
Kingma, I., Van Dieen, J. H., Looze, M. D., Toussaint, H. M., Dolan, P., and Baten, C. T. M., 1998. Asymmetric low back loading in asymmetric lifting movements is not prevented by pelvic twist. Journal of Biomechanics. 31: 527-534.
DOI : https://doi.org/10.1016/S0021-9290(98)00045-1
Lavender, S. A. and Johnson, M. 2009. Is there a transfer distance that minimizes twisting and bending motions of the spine?. Proceedings of the Human Factors and Ergonomics Society Annual Meeting. 53: 882-882.
DOI : https://doi.org/10.1177/154193120905301404
Driver, C. B. 2018. “Spondylosis†in e-medicinehealth. Retrieved from: https://www.emedicinehealth.com/spondylosis/article_em.htm#spondylosis_facts
Chen, Y. L. 2000. Changes in Lifting Dynamics after Localized Arm Fatigue. Industrial Ergonomics. 25: 611-619.
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