Reduction of work-related musculoskeletal risk factors following ergonomics training and exercise practices in a mechanised underground copper mine

Abstract

Background: Work-related musculoskeletal disorders (WrMSDs) are a major hazard for miners. Objectives: This study aimed to assess the effect of an ergonomics training and exercise practices in reducing the exposure the risk factors for WrMSDs among underground mining operators. Methods: This quasi experimental research was carried out in two phases in a mechanised copper mine. Data obtained pre-post the intervention program were collected as follows using the the Extended Nordic Musculoskeletal Scale (E-NMQ), the Quick Exposure Check (QEC) method, Minnesota Job Satisfaction Questionnaire (MJSQ), variables of physical fitness components were evaluated with the Body Mass Index (BMI), ‘Sit and Reach Test’, ‘Modified Biering Sorensen’ test. Results: The results in the first stage revealed that the prevalence of musculoskeletal disorders was reported 78% (n = 109). According to McNemar test, significant differences between the pre-post comparison in neck, lower back, shoulder, back and knee were observed (p < 0.005) after ergonomics interventions. Conclusions: Ergonomics training and exercise practices can reduce workplace exposure to risk factors for WrMSDs, as well as improve physical fitness and job satisfaction. Better health and safety conditions for mine employees can be created by using low-cost methods such as ergonomics training and exercise practices in mine workplaces.