Evaluation of Upper Limb Musculoskeletal Loads due to Posture, Repetition, and Force by Rapid Upper Limb Assessment in a Textile Factory

Abstract

Please cite this paper as: Moussavi Najarkola SA, Mirzaei R. Evaluation of Upper Limb Musculoskeletal Loads due to Posture, Repetition, and Force by Rapid Upper Limb Assessment in a Textile Factory. J Health Scope. 2012:1(1): 18-24. DOI: 10.5812/JHS.4532 Implication for health policy/practice/research/medical education: This article pays attention to the application of an ergonomic risk factors assessment technique so-called “Rapid Upper Limbs Assessment (RULA)” for evaluation of the upper limb musculoskeletal loads due to posture, repetition and force in textile factory. It introduces a practical topic in ergonomics field that can be useful for ergonomists, occupational hygienists, occupational therapists, industrial designers, physiotherapists, rehabilitation specialists, and anthropologists. 1. Background Musculoskel et al. disorders are among the most prevalent occupational ailments in industrialized and industrializing countries. These disorders are common in industrial jobs requiring awkward postures, repeated motion, and heavy lifting. Work-related musculoskeletal disorders (WMSDs) arise when work activities and conditions contribute significantly to their development or exBackground: In the last 15 or 20 years, upper extremity musculoskeletal disorders have been recognized as a cause of major medical problems among industrial workers. Objectives: The aim of this study was conducted to assess risk factors for upper limb musculoskeletal disorders on workers performing various tasks in a textile factory. Ergonomic interventions and solutions may be developed on the basis of the assessment results. Patients and Methods: Rapid Upper Limb Assessment (RULA) was used to evaluate upper limb musculoskeletal loads, and the Nordic Musculoskeletal Questionnaire (NMQ) was used to measure the prevalence of upper limb disorders in workers at the Qaem Shahr textile factory. A target population sample included 566 subjects (404 males [71.4%] aged 23–51 years, mean age 32.9 [SD = 6.3 years]; 161 females [28.6%] aged 21–37 years, mean age 25.6 [SD = 8.6 years]). Results: Prevalence data on disorders to the upper arms, lower arms, wrists, neck, trunk, and legs were obtained in 497 (87.8%), 255 (45.1%), 318 (56.2%), 383 (67.7%), 436 (77%), and 163 (28.8%) workers, respectively. Recommended action as a result of the assessment varied according to prevalence and s verity of the disorders. Tasks involving spinning, direct wrapping, pirn wrapping, Gard machine operating, yarn combing, weaving, and fold counting were revealed to be the most hazardous. The results of the NMQ confirmed the results of the RULA. Conclusions: Preventive measures at the structural, organizational, and personnel levels must be taken for the safety of industrial workers performing tasks categorized as action levels 2–4 in this study. RULA is a useful and practical tool for evaluation of musculoskeletal disorders resulting from working in a textile factory. Copyright c 2012 Kowsar Corp. All rights reserved. * Corresponding author: Seyyed Ali Moussavi Najarkola. Department. of Occupational Health, School of Medical Sciences, Shahid Beheshti University of Medical (SBMU), Tehran, IR Iran. Tel: +98-2122432040, Fax: +982122432040, E-mail: mosavi58@gmail.com DOI: 10.5812/JHS.4532 Copyright c 2012 Kowsar Corp. All rights reserved. www.SID.ir