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Cross-Sectional Survey of Musculoskeletal Disorders in Workers Practicing Traditional Methods of Underground Coal Mining

Author

Listed:
  • Madiha Ijaz

    (College of Earth and Environmental Sciences, New campus, University of the Punjab, Lahore 54590, Pakistan)

  • Sajid Rashid Ahmad

    (College of Earth and Environmental Sciences, New campus, University of the Punjab, Lahore 54590, Pakistan)

  • Muhammad M. Akram

    (College of Earth and Environmental Sciences, New campus, University of the Punjab, Lahore 54590, Pakistan)

  • Steven M. Thygerson

    (Department of Public Health, College of Life Sciences, Brigham Young University, Provo, UT 84604, USA)

  • Falaq Ali Nadeem

    (College of Statistical and Actuarial Sciences, University of the Punjab, Lahore 54590, Pakistan)

  • Waheed Ullah Khan

    (College of Earth and Environmental Sciences, New campus, University of the Punjab, Lahore 54590, Pakistan)

Abstract

Background: In subcontinental underground mines, coal mining is carried out manually and requires many laborers to practice traditional means of coal excavation. Each task of this occupation disturbs workers’ musculoskeletal order. In order to propose and practice possible ergonomic interventions, it is necessary to know what tasks (drilling and blasting, coal cutting, dumping, transporting, timbering and supporting, loading and unloading) cause disorder in either upper limbs, lower limbs, or both. Methods: To this end, R-programming, version R 3.1.2 and SPSS, software 20, were used to calculate data obtained by studying 260 workers (working at different tasks of coal mining) from 20 mines of four districts of Punjab, Pakistan. In addition, a Standard Nordic Musculoskeletal Questionnaire (SNMQ) and Rapid Upper Limb Assessment (RULA) sheet were used to collect data and to analyze postures respectively. Results: In multi regression models, significance of the five tasks for upper and lower limb disorder is 0.00, which means that task based prevalence of upper and lower limb disorders are common in underground coal mines. The results of the multiple bar chart showed that 96 coal cutters got upper limb disorders and 82 got lower limb disorders. The task of timbering and supporting was shown to be dangerous for the lower limbs and relatively less dangerous for the upper limbs, with 25 workers reporting pain in their lower limbs, and 19 workers reporting pain in their upper limbs. Documented on the RULA sheet, all tasks got the maximum possible score (7), meaning that each of these tasks pose a threat to the posture of 100% of workers. The majority of participants (182) fell in the age group of 26 to 35 years. Of those workers, 131 reported pain in the lower limbs and slight discomfort (128) in the upper limbs. The significance value of age was 0.00 for upper limb disorder and was 0.012 for lower limb disorder. Frequency graphs show age in direct proportion to severity of pain while in inverse proportion with number of repetitions performed per min. Conclusions: All findings infer that each task of underground coal mining inflicts different levels of disorder in a workers’ musculoskeletal structure of the upper and lower limbs. It highlighted the need for urgent intervention in postural aspects of each task.

Suggested Citation

  • Madiha Ijaz & Sajid Rashid Ahmad & Muhammad M. Akram & Steven M. Thygerson & Falaq Ali Nadeem & Waheed Ullah Khan, 2020. "Cross-Sectional Survey of Musculoskeletal Disorders in Workers Practicing Traditional Methods of Underground Coal Mining," IJERPH, MDPI, vol. 17(7), pages 1-18, April.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:7:p:2566-:d:343103
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    References listed on IDEAS

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