Assessment of Muscle Fatigue Associated with Prolonged Standing in the Workplace

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 quest...

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Main Authors: Isa Halim, Abdul Rahman Omar, Alias Mohd Saman, Ibrahim Othman
Format: Article
Language:English
Published: Elsevier 2012-03-01
Series:Safety and Health at Work
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2093791112310056
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author Isa Halim
Abdul Rahman Omar
Alias Mohd Saman
Ibrahim Othman
author_facet Isa Halim
Abdul Rahman Omar
Alias Mohd Saman
Ibrahim Othman
author_sort Isa Halim
collection DOAJ
description 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.
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spelling doaj.art-ae0436fcda804918938d6ceae1dd0dfb2023-09-02T22:52:11ZengElsevierSafety and Health at Work2093-79112012-03-0131314210.5491/SHAW.2012.3.1.31Assessment of Muscle Fatigue Associated with Prolonged Standing in the WorkplaceIsa Halim0Abdul Rahman Omar1Alias Mohd Saman2Ibrahim Othman3Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, MelakaFaculty of Mechanical Engineering, Universiti Teknologi MARA, Selangor, MalaysiaFaculty of Mechanical Engineering, Universiti Teknologi MARA, Selangor, MalaysiaFaculty of Art and Design, Universiti Teknologi MARA, Selangor, MalaysiaObjectives: 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.http://www.sciencedirect.com/science/article/pii/S2093791112310056Prolonged standingMuscle fatigueQuestionnaire surveySurface electromyographyMetal stamping industry
spellingShingle Isa Halim
Abdul Rahman Omar
Alias Mohd Saman
Ibrahim Othman
Assessment of Muscle Fatigue Associated with Prolonged Standing in the Workplace
Safety and Health at Work
Prolonged standing
Muscle fatigue
Questionnaire survey
Surface electromyography
Metal stamping industry
title Assessment of Muscle Fatigue Associated with Prolonged Standing in the Workplace
title_full Assessment of Muscle Fatigue Associated with Prolonged Standing in the Workplace
title_fullStr Assessment of Muscle Fatigue Associated with Prolonged Standing in the Workplace
title_full_unstemmed Assessment of Muscle Fatigue Associated with Prolonged Standing in the Workplace
title_short Assessment of Muscle Fatigue Associated with Prolonged Standing in the Workplace
title_sort assessment of muscle fatigue associated with prolonged standing in the workplace
topic Prolonged standing
Muscle fatigue
Questionnaire survey
Surface electromyography
Metal stamping industry
url http://www.sciencedirect.com/science/article/pii/S2093791112310056
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