Volume 11, Issue 3 (9-2014)                   ioh 2014, 11(3): 10-21 | Back to browse issues page

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Khani Jazani R, Saremi M, Rasouli Kahaki Z, Sanjari M A, Kavousi A. Effect of flooring and footrest on muscle fatigue and discomfort in prolonged standing activities . ioh. 2014; 11 (3) :10-21
URL: http://ioh.iums.ac.ir/article-1-1069-en.html
Faculty of Health, Safety and Environment Shahid Beheshti University , ergoshams@gmail.com
Abstract:   (5447 Views)

  Background and aims: prolongedstanding without significantmoving is a requirement of many jobs and is a known factor of causing musculoskeletal disorders that cause pain and discomfort in lower extremitiesand back discomfort.The purposeofthisstudy was to comparethe effects of cerami c surface,flooring andfootreston discomfort and muscle fatigue lower extremities during long- standing activities.

  Methods : Thiscross-sectional study was carried out on15 student s with mean(SD) age of 21.5 ± (2.3 ) andmean height of 163± (2.8). Participants attended 3 sessions each lasting one hours. They stood on threedifferentsurfaces: ceramic, rubber flooringandfootrest.Surfaceelectromyographywas usedto assess themuscle fatigue. Body map and visual analog scale were employed to evaluate discomfort ratings of the lower extremitiesand the back . Dataanalyzseswere performedusingANOVA -R.

  Results: Based onthe results ofelectromyography, there was no significant difference between soleus and lateral gastrocnemius muscles fatigue and type of surfaces.

  There wasa significant differencebetween thesurfaces(p<0.05) and different areas of the body discomfort level so that the ceramic had the highest discomfort rating, while the lowest ratings were related to footrest.

  Conclusion : The resultsindicatethat usingthefootrest and standing on rubberflooringare effective solutionsfor reducinglegdiscomfort.Further investigations are recommended onthe properties of ergonomicflooring and footrest .

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Type of Study: Applicable | Subject: Ergonomics
Received: 2013/09/30 | Accepted: 2013/12/8 | Published: 2014/09/15

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