Document Type : Research Paper

Author

Assistant Professor, Biosystems Engineering Department., Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran

Abstract

Introduction Currently, musculoskeletal disorders are one of the most common occupational diseases and one of the most common causes of absenteeism, which leads to a decrease in productivity. Postural assessment methods are considered pivotal in the investigation of the risks of developing job-related musculoskeletal disorders. Various approaches are presented to assess the risk of injury in inappropriate postures. Agriculture is one of the most crucial sectors in both the developing and the developed countries since it ensures the food security of the country. In the process of producing sugarcane, a significant part of the stages of cutting, planting, and harvesting is done manually. A low level of knowledge about the correct condition of the body during work is one of the problems of farmers. Therefore, body status assessment methods are considered as the basis for assessing the risk of musculoskeletal disorders associated with work.
Materials and Methods This research was carried out with the aim of analyzing the risk factors of occupational skeletal musculoskeletal injuries in sugar cane farmers using QEC method and Nordic questionnaire. The quick exposure checklist (QEC) quickly assesses the exposure to risks for work-related musculoskeletal disorders (WMSDs). QEC is based on the practitioners’ needs and research on major WMSD risk factors. The Nordic body map is given to the participants to be filled out with the assist of a student research assistant when needed. However, due to practical reasons, most participants are interviewed using the semi-structured method by a student research assistant. The Nordic body map consists of 28 parts of the body that must be rated based on the symptoms. Examples of the body parts are the right shoulder, upper arm, etc. The postures of 50 cutting workers, 200 planting workers, and 50 harvesting workers were selected by random sampling and analyzed using QEC2003 software.
Results and Discussion According to the results of the Nordic questionnaire in manual cutting sugarcane, the most prevalent signs of musculoskeletal disorders were in the waist (80%), wrists and hands (78%), knees (74%), and feet (70%). In manual planting sugarcane, the most prevalent signs of musculoskeletal disorders were in the areas of the waist (89%), back (86.5%), and knee (84.5%), respectively. The findings also indicate that in the manual harvesting operations, the most prevalent signs of musculoskeletal disorders were the wrist and hand (88%), waist (84%), and foot (80%). The results of the Nordic questionnaire show that most disadvantages of cutting, planting, and harvesting in workers are visible in the lower back (80%), lower back (89%), and wrist/hand (88%), respectively. The prevalence of skeletal musculoskeletal disorders, especially in the waist, was observed among a high number of sugarcane producers.
The results also showed that in the QEC method, in cutting, planting, and harvesting 44, 62, and 59 percent of workers’ postures were placed in the most critical group. In manual cutting of sugarcane, 30 percent of the workers were at the high-risk level and 44 percent of workers were at high risk, indicating the high risk of this operation, and that better preventive measures should begin as soon as possible. In the QEC method for manual planting of sugarcane, 7% of the postures of workers is acceptable and their risk is very low. Work posture for 9.5% of people requires more research and attention, and 21.5% of workers must be treated fairly fast. 62% of the postures of workers need to be corrected promptly. In the QEC method for manual harvesting of sugarcane, the posture requires 14% more research and attention, and 28% of workers should be treated fairly quickly. For 59% of postoperative workers, work should be promptly corrected. The QEC analysis showed that some of the work postures posed greater risks of MSDs to the workers with QEC scores. QEC helps to prevent many kinds of WMSDs from developing and educates users about WMSD risks in their workplaces.
Conclusion The study has identified the body parts and tasks of the workers exposed to ergonomic risks through the Nordic questionnaire and the QEC method, respectively. Results from the study showed that the majority of the workers were having WMSDs.The physical condition of sugar cane production workers needs to be corrected. The ergonomic training course can have an impact on improving the working conditions of workers, but it is not enough, and it is a must-have for the sugar agro-industry to move towards all mechanized operations.

Keywords

  1. Aabedini, R., Choobineh, A., Soltanzadeh, A., Ghiasvand, R., and Kazemhaghighi, M. 2012. Ergonomic evaluation of exposure to musculoskeletal disorders risk factors by Quick Exposure Check (QEC) technique in a metal structure manufacturing factory. Jentashapir Journal Health Science, 4(2): 13-20. (In Persian)
  2. Ajibade, B., and Alao, M.T. 2013. Prevalence of musculoskeletal disorders among nurses in Osun State, Nigeria. Journal Biology, Agriculture Healthcare, 3(7): 170-5.
  3. Alexopoulos, E. C., Tanagra, D., Konstantinou, E., and Burdorf, A. 2006. Musculoskeletal Disorders in Shipyard Industry: Prevalence, Health Care Use, and Absenteeism. BMC Musculoskelet Disord, 7(1): 88.
  4. Anap, D., Iyer, C., and Rao, K. 2013. Work related musculoskeletal disorders among hospital nurses in rural Maharashtra, India: a multi-center survey. International Journal of Research in Medical Sciences, 1(2): 101-107.
  5. Bakhshipoor, A., Kasraei, M., and Amoobeigi Jozei A. 2010. Evaluation of ergonomic status among tea harvest workers in the north of the country. Sixth National Congress on Agricultural Machinery and Mechanization. Campus of Agriculture and Natural Resources of Tehran University. [Persian]
  6. Barkhordari, A., Jafari Nodoushan, R., Vatani Shoaa, J., Halvani, G., and Salmani Nodoushan, M. 2011. Posture evaluation using OWAS, RULA, QEC method in FERO-ALEAGE factory workers of Kerman. Occupational Medicine Quarterly Journal, 2 (1): 14-19. [Persian]
  7. Bayatian, M., Bagheri, A., and Kawasi, A. 2008. Correlation between the results of both QEC and RULA methods in evaluating the risk of exposure to the factors affecting the musculoskeletal system. The First International Ergonomics Conference of Iran. Tehran. (In Persian)
  8. Bernard, B.P. 1997. Musculoskeletal disorders and workplace factors: A critical review of epidemiologic evidence for work-related musculoskeletal disorders of the neck, upper extremity, and low back. National Institute for Occupational Safety and Health. Ed. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention. DHHS (NIOSH) No. Cincinnati, OH: 97- 141.
  9. Choobineh, A. 2008. Posture Assessment Methods in Occupational Ergonomics. 2 nd ed, Fanavaran Publishers, Hamadan. (In Persian)
  10. Eydizadeh, M., Shaeikhdavoodi, M. J. and Salehi Sahl Abadi, A. 2014. Ergonomic evaluation of date’s packinghouse workers by REBA method. Journal of Agricultural Engineering, 37(1): 13-22. (In Persian)
  11. Gomez, M.I., Hwang, S., Stark, A.D., May, J.J., Hallman, E.M., and Pantea, C. I. 2003. An analysis of self-reported joint pain among New York Farmers. J Agric Journal of Agricultural Safety and Health. 9 (2):143-157.
  12. Hartman, E., and Huirne, H. 2005. Exposure to physical risk factor in Dutch agriculture: effect on sick leave due to musculoskeletal disorder. International Journal of Ergonomics, 35: 1031-1045.
  13. Hayati, A., Marzban, A., and Asoodar, M. A. 2015. Ergonomic evaluation of hand and mechanized milking in dairy farms. Journal of Ergonomics, 3 (3):65-75. (In Persian)
  14. Houshyar, A., and Kim, I.J. 2018. Understanding musculoskeletal disorders among Iranian apple harvesting laborers: Ergonomic and stop watch time studies. International Journal of Industrial Ergonomics, 67: 32-40.
  15. Hwang, S.A., Gomez, M.I., Stark, A.D., St John, T.L., May, J.J., and Hallman, E.M. 2001. Severe farm injuries among New York farmers. American Journal of Industrial Medicine, 40 (1):32-41.
  16. Jamshidi, H.R., Daneshmandi, H., and Haghayegh, A. 2015. Survey Prevalence of Musculoskeletal Disorders and Risk Assessment in Paddy Workers in Marvdasht in 2013. Journal of Neyshabur University Medical Science, 3 (1): 57-65. (In Persian)
  17. Marzban, A., and Hayati, A. 2018. Ergonomic evaluation of traditional date fruit harvesting. Iranian Journal of Ergonomics. 6 (3). URL: http://journal.iehfs.ir/article575-1-fa.html. (In Persian)
  18. Meyers, J., Miles, J., Faucett, J., Janowitz, I., Tejeda, D., Duraj, V., Kabashima, J., and Smith, R.W.E. 1998. High risk tasks for musculoskeletal disorders in agricultural field work. Paper presented at the American Public Health Association, Washington, DC.
  19. Mostaghaci, M., Davari, M., Mollaei, F., Salehi, M., and Mehrparvar, A. 2012. Evaluation of the frequency of musculoskeletal disorders and work posture analysis by RULA method in workers of an auto- part manufacturing compan. Occupational Medicine Journal, 3: 26-32.
  20. Parkes, K.R. 2015. Social support and musculoskeletal disorders (Literature Review and Data Analysis). England: HSE (Health and Safety Executive) Publication; Available from: URL http://www.hse.gov.uk/research/rrpdf/rr594.pdf/.
  21. Struttmann, T.W., and Reed, D.K. 2002. Injuries to tobacco farmers in Kentucky. The Southern Medical Journal, 95(8): 850-856.
  22. Walker-Bone, K., Palmer, K.T. 2002. Musculoskeletal disorders in farmers and farm workers. Occupational Medicine, 52 (8):441-450.