Journal
SAFETY AND HEALTH AT WORK
Volume 3, Issue 1, Pages 31-42Publisher
ELSEVIER SCIENCE BV
DOI: 10.5491/SHAW.2012.3.1.31
Keywords
Prolonged standing; Muscle fatigue; Questionnaire survey; Surface electromyography; Metal stamping industry
Categories
Funding
- Ministry of Higher Education of Malaysia
- Universiti Teknikal Malaysia Melaka (UTeM)
- Ministry of Science, Technology and Innovation (MOSTI) of Malaysia
- Mechanical Engineering of Universiti Teknologi MARA
Ask authors/readers for more resources
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 (r(s) = 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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available