Volume 2, Number 4 (Journal of Occupational Hygiene Engineering, Winter 2016)                   johe 2016, 2(4): 25-34 | Back to browse issues page


XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Mahdavi N, Motamedzade M, Moghim Beygi A, Jamshidi A A, Heydari Moghaddam R. Effect of One Carpet Weaving Workstation on Upper Trapezius Fatigue . johe. 2016; 2 (4) :25-34
URL: http://johe.umsha.ac.ir/article-1-140-en.html

full professor, Department of Ergonomics Hamadan university of medical sciences , motamedzade@yahoo.com
Abstract:   (1195 Views)

Introduction: This study aimed to investigate the effect of carpet weaving at a proposed workstation on Upper Trapezius (UTr) fatigue during a task cycle. Fatigue in the shoulder is one of the most important precursors for upper limb musculoskeletal disorders. One of the most prevalent musculoskeletal disorders between carpet weavers is disorder of the shoulder region.

Methods: This cross-sectional study, included eight females and three males. During an 80-minute cycle of carpet weaving, Electromyography (EMG) signals of right and left UTr were recorded by the surface EMG, continuously. After raw signals were processed, MPF and RMS were considered as EMG amplitude and frequency parameters. Time series model and JASA methods were used to assess and classify the EMG parameter changes during the working time.

Results: According to the JASA method, 58%, 16%, 8% and 8% of the participants experienced fatigue, force increase, force decrease and recovery, respectively in the right UTr. Also, 50%, 25%, 8% and 16% of the participants experienced fatigue, force increase, force decrease and recovery, respectively in the left UTr.

Conclusions: For the major portion of the weavers, dominant status in Left and right UTr was fatigue, at the proposed workstation during a carpet weaving task cycle. The results of the study provide detailed information for optimal design of workstations. Further studies should focus on fatigue in various muscles and time periods for designing an appropriate and ergonomics carpet weaving workstation

Full-Text [PDF 938 kb]   (684 Downloads)    
Type of Study: Research Article | Subject: Special

Add your comments about this article : Your username or email:
Write the security code in the box

Send email to the article author


© 2015 All Rights Reserved | Journal of Occupational Hygiene Engineering

Designed & Developed by : Yektaweb