Indian Journal of Occupational and Environmental Medicine   Official publication of Indian Association of  0ccupational  Health  
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 ORIGINAL ARTICLE
Year : 2021  |  Volume : 25  |  Issue : 3  |  Page : 138-146

The relationship of grip and pinch strength to musculoskeletal disorders in female carpet weavers in Southeastern Iran, 2019


1 Departments of Occupational Health, Faculty of Health, Kerman University of Medical Sciences, Kerman, Iran
2 Department of Occupational Health, Faculty of Health, Kerman University of Medical Sciences, Kerman; Department of Occupational Health, Faculty of Health, Jiroft University of Medical Sciences, Jiroft, Iran
3 Department of Biostatistics and Epidemiology, Faculty of Health, Kerman University of Medical Sciences, Kerman, Iran
4 Department of Environment Health Engineering, Faculty of Health, Jiroft University of Medical Sciences, Jiroft, Iran

Correspondence Address:
Dr. Mostafa Mohammadian
Kerman University of Medical Sciences, Haft Bagh-e-Alavi Road, Kerman
Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijoem.IJOEM_223_20

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Background: The repetitive and prolonged exertion of grip and pinch strength are current among carpet weaver tasks. The three objectives of this study were (1) to investigate the relationship between symptoms of musculoskeletal disorders and grip and pinch strength of carpet weavers in carpet weaving workshops in Kerman province, (2) to compare the grip and pinch strength of carpet weavers with normal values, and (3) to identify the relationship between hand postures of carpet weavers during work and force exertion. Methods: In this cross-sectional study, grip strength and key, tip and palmar pinch strengths of 101 female carpet weavers aged 20 to 71 years were measured in Kerman province, in 2018. Nordic Musculoskeletal Questionnaire (Extended version) was also used to evaluate musculoskeletal disorders. Results: Bivariate and multivariate linear regression analyses showed that participants who suffered from musculoskeletal disorders had lower grip and pinch strength than others and this decrease was statistically significant in upper back, wrists/hands, and knees. Moreover, there was a significant difference between grip and three types of pinch strength of carpet weavers and normal values. Furthermore, for both hands, the grip strength in the position recommended by American Society of Hand Therapists was significantly greater than that in the normal position carpet weavers usually adopt. Conclusion: Based on the results, the high prevalence of musculoskeletal disorders has led to a significant decrease in the grip and pinch strength of carpet weavers. Therefore, it is necessary to undertake ergonomic interventions in designing the carpet weaving workstation.






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