Document Detail

Effects of simulated occupational task parameters on balance.
MedLine Citation:
PMID:  19926072     Owner:  NLM     Status:  MEDLINE    
The effects of single-handed load holding, length of the base of support, and standing surface condition (narrow and wide construction beams) on balance were investigated in twenty-three healthy men between the ages of 18 and 55 years old. Balance during quiet standing was evaluated from postural sway measurements derived from center of pressure (COP) displacement. These measurements included the range or maximal displacement of the COP in the anteroposterior (AP) and mediolateral (ML) directions, the elliptical area, and mean sway velocity. Holding a load in the hand did not significantly affect postural sway measures (p > 0.05), although the effect of surface condition was significant on all COP measures (p < 0.001). Lengthening the base of support did not affect the ranges or elliptical area, but increased the mean velocity of sway (p = 0.001). Changes in the dimensional characteristics of the surface condition and length of base of support affected postural sway, possibly by requiring adjustments to balance and motor control strategies. Further research is required to determine if these changes are detrimental to maintaining balance and increase the risk of falls for workers in similar environments.
Angela DiDomenico; Krystyna Gielo-Perczak; Raymond W McGorry; Chien-Chi Chang
Publication Detail:
Type:  Journal Article     Date:  2009-11-18
Journal Detail:
Title:  Applied ergonomics     Volume:  41     ISSN:  1872-9126     ISO Abbreviation:  Appl Ergon     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-02-15     Completed Date:  2010-05-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0261412     Medline TA:  Appl Ergon     Country:  England    
Other Details:
Languages:  eng     Pagination:  484-9     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2009 Elsevier Ltd. All rights reserved.
Liberty Mutual Research Institute for Safety, 71 Frankland Road, Hopkinton, MA 01748, USA.
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MeSH Terms
Accidental Falls / prevention & control
Facility Design and Construction
Middle Aged
Occupational Exposure / analysis*
Postural Balance / physiology*
United States
Walking / physiology
Weight-Bearing / physiology
Young Adult

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