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Int. J. Environ. Res. Public Health 2016, 13(5), 464;

The Impact of an Ergonomics Intervention on Psychosocial Factors and Musculoskeletal Symptoms among Thai Hospital Orderlies

College of Public Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
Faculty of Nursing, Chiang Mai University, Chiang Mai 50200, Thailand
Department of Patient Transfer Service, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ 08901, USA
Author to whom correspondence should be addressed.
Academic Editor: Andrew Watterson
Received: 9 November 2015 / Revised: 15 March 2016 / Accepted: 28 April 2016 / Published: 3 May 2016
(This article belongs to the Special Issue Occupational Safety and Related Impacts on Health and the Environment)
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(1) Background: Musculoskeletal disorders have a multifactorial etiology that is not only associated with physical risk factors, but also psychosocial risk factors; (2) Objective: This study evaluated the effects of an ergonomic intervention on musculoskeletal disorders and psychosocial risk factors; (3) Material and Methods: This study took a participatory ergonomic (PE) approach with a randomized controlled trial (RCT) conducted at tertiary care hospitals during July to December 2014. A group of hospital orderlies in Thailand were randomly selected for examination. Fifty orderlies were placed in a case group and another 50 orderlies were placed in the control group. The Nordic Musculoskeletal Disorders Questionnaire (NMQ) and the Copenhagen Psychosocial Questionnaire (COPSOQ) were used for data collection before and after the intervention program; (4) Results: The most commonly reported problem among hospital orderlies was found to be lower back symptoms (82%). The study found significant differences in prevalence rates of reported musculoskeletal conditions in the arm, upper back, and lower back regions before and after intervention. Findings showed that psychosocial risk factors were affected by the intervention. COPSOQ psychosocial risk factors were significantly different pre/post intervention. These variables included: work pace, influence at work, meaning of work, predictability, rewards, role conflicts, and social support from supervisors. No other psychosocial risk factors were found to be significant; (5) Conclusions: Positive results were observed following the intervention in the work environment, particularly in terms of reducing physical work environment risk factors for musculoskeletal disorders and increasing promotion factors of the psychosocial work environment. View Full-Text
Keywords: musculoskeletal disorders; physical job demands; psychological perceived job; Thai hospital orderlies musculoskeletal disorders; physical job demands; psychological perceived job; Thai hospital orderlies
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Chanchai, W.; Songkham, W.; Ketsomporn, P.; Sappakitchanchai, P.; Siriwong, W.; Robson, M.G. The Impact of an Ergonomics Intervention on Psychosocial Factors and Musculoskeletal Symptoms among Thai Hospital Orderlies. Int. J. Environ. Res. Public Health 2016, 13, 464.

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