Volume 6, Issue 1 (Spring 2019)                   johe 2019, 6(1): 17-25 | Back to browse issues page

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omari shekaftik S, vosoughi S, sedghi noushabadi Z, Aboulghasemi J, mohammadi S. Relationship of Musculoskeletal Discomforts with the Permissible Levels of Manual Load Lifting and Postural Assessment Score (Case Study of a Printing Industry). johe 2019; 6 (1) :17-25
URL: http://johe.umsha.ac.ir/article-1-488-en.html
1- Department of Occupational Health Engineering, Faculty of Health, Iran University of Medical Sciences, Tehran, Iran
2- Department of Occupational Health Engineering, Faculty of Health, Iran University of Medical Sciences, Tehran, Iran , vosoughi.sh@iums.ac.ir
3- Department of biostatistics, Faculty of Health, Iran University of Medical Sciences, Tehran, Iran
4- Department of Biostatistics, Faculty of Public Health, Iran University of Medical Sciences, Tehran, Iran
Abstract:   (4325 Views)
Background and Objective: Musculoskeletal discomforts are one of the main problems in all occupations and industries. Printing industry workers are involved in tasks that increase the risk of musculoskeletal discomforts. Therefore, the present study aimed to investigate the relationship of musculoskeletal discomforts with manual load lifting and workers’ postures in a printing industry.
Materials and Methods: In the current study, the prevalence of musculoskeletal discomforts among the workers in the printing industry was investigated using the Cornell questionnaire. Manual load lifting tasks in the industry were also assessed in three methods of Snook tables, WISHA, and KIM-LHC. Workers’ postures were assessed using the REBA method. Data were analyzed using SPSS (version 22) through Mann-Whitney U test and Kruskal-Wallis non-parametric tests.
Results: The results of the Cornell questionnaire showed that the most common complaints were related to pain in the lower extremities, including feet, legs, and knees. The comparison of the results of Cornell questionnaire and the results of WISHA method using Kruskal-Wallis test showed that the neck (P=0.016), right shoulder (P=0.028), left shoulder (P=0.031), back (P=0.022), and right forearm (P=0.045) had a significant relationship with WISHA results.
Conclusion: The association of the prevalence of some musculoskeletal discomforts with the results of WISHA method indicated the superiority of this method to KIM-LHC and Snook tables methods for the assessment of manual load lifting tasks in printing industries. Moreover, the lack of correlation between musculoskeletal discomforts and posture assessment using the REBA method revealed that the reasons for the prevalence of these discomforts in the industry should be sought in cases other than inappropriate postures.
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Type of Study: Research Article | Subject: Ergonomics

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