Assessment of Muscle Fatigue Associated with Prolonged Standing in the Workplace

Isa, Halim (2012) Assessment of Muscle Fatigue Associated with Prolonged Standing in the Workplace. Safety and Health at Work, 3 (1). pp. 31-42. ISSN 2093-7911

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Abstract

Objectives: The objectives of this study were to determine the psychological fatigue and analyze muscle activity of production workers who are performing processes jobs while standing for prolonged time periods. Methods: The psychological fatigue experienced by the workers was obtained through questionnaire surveys. Meanwhile, muscle activity has been analyzed using surface electromyography (sEMG) measurement. Lower extremities muscles include: erector spinae, tibialis anterior, and gastrocnemius were concurrently measured for more than five hours of standing. Twenty male production workers in a metal stamping company participated as subjects in this study. The subjects were required to undergo questionnaire surveys and sEMG measurement. Results: Results of the questionnaire surveys found that all subjects experienced psychological fatigue due to prolonged standing jobs. Similarly, muscle fatigue has been identified through sEMG measurement. Based on the non-parametric statistical test using the Spearman’s rank order correlation, the left erector spinae obtained a moderate positive correlation and statistically significant (rs = 0.552, p < 0.05) between the results of questionnaire surveys and sEMG measurement. Conclusion: Based on this study, the authors concluded that prolonged standing was contributed to psychological fatigue and to muscle fatigue among the production workers.

Item Type: Article
Subjects: Q Science > QP Physiology
Divisions: Faculty of Manufacturing Engineering > Department of Manufacturing Management
Depositing User: Dr. Isa Halim
Date Deposited: 10 Jul 2012 01:32
Last Modified: 28 May 2015 02:38
URI: http://eprints.utem.edu.my/id/eprint/3937
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