Effectiveness of vertical visual reference for reducing postural instability on inclined and compliant surfaces at elevation

Falls from elevation continue to be the most serious hazard for the workers in construction. Simple and cost effective technical approaches to improve workers' balance on sloped roofs and deformable/unstable platforms have potential to reduce the risk of falls. This study evaluated the effectiv...

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Veröffentlicht in:Applied ergonomics 2009-05, Vol.40 (3), p.353-361
Hauptverfasser: Simeonov, Peter, Hsiao, Hongwei, Hendricks, Scott
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container_title Applied ergonomics
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creator Simeonov, Peter
Hsiao, Hongwei
Hendricks, Scott
description Falls from elevation continue to be the most serious hazard for the workers in construction. Simple and cost effective technical approaches to improve workers' balance on sloped roofs and deformable/unstable platforms have potential to reduce the risk of falls. This study evaluated the effectiveness of simple vertical structures as visual references (cue) for balance improvement. Twenty-four construction workers were tested while standing on sloped and deformable surfaces at elevation and performing undemanding visual tasks with vertical structures positioned at different proximal locations. Workers' balance performance was assessed by sway parameters calculated from the center-of-pressure movement collected with a force platform. The study results indicate increased instability on the sloped and deformable surfaces at elevation, and show that a simple vertical structure, e.g., a narrow bar, can serve as a visual cue and assist workers' balance. Workers' balance improved linearly with cue proximity in the tested distance range both on the sloped and the deformable surfaces. At a moment of instability, workers can redirect their attention to a proximal structure, available in the line of sight, to assist balance control. These findings may be useful in modifying elevated work environments and construction procedures to improve workers' postural balance during various construction phases.
doi_str_mv 10.1016/j.apergo.2008.11.007
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subjects Accidental Falls - prevention & control
Adult
Applied physiology
Balance control
Biological and medical sciences
Biomechanical Phenomena
Construction industry
Effectiveness
Effectiveness studies
Ergonomics
Ergonomics. Work place. Occupational physiology
Facility Design and Construction
Fall prevention
Falls
Human physiology applied to population studies and life conditions. Human ecophysiology
Humans
Male
Medical sciences
Middle Aged
Occupational Health
Orientation - physiology
Photic Stimulation
Postural Balance - physiology
Psychomotor Performance - physiology
Roof construction
Surface Properties
Task Performance and Analysis
Visual reference
Visual task performance
West Virginia
Workers
title Effectiveness of vertical visual reference for reducing postural instability on inclined and compliant surfaces at elevation
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