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 |
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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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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.</description><identifier>ISSN: 0003-6870</identifier><identifier>EISSN: 1872-9126</identifier><identifier>DOI: 10.1016/j.apergo.2008.11.007</identifier><identifier>PMID: 19100527</identifier><identifier>CODEN: AERGBW</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>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</subject><ispartof>Applied ergonomics, 2009-05, Vol.40 (3), p.353-361</ispartof><rights>2008</rights><rights>2009 INIST-CNRS</rights><rights>Copyright Elsevier Science Ltd. 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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.</description><subject>Accidental Falls - prevention & control</subject><subject>Adult</subject><subject>Applied physiology</subject><subject>Balance control</subject><subject>Biological and medical sciences</subject><subject>Biomechanical Phenomena</subject><subject>Construction industry</subject><subject>Effectiveness</subject><subject>Effectiveness studies</subject><subject>Ergonomics</subject><subject>Ergonomics. Work place. Occupational physiology</subject><subject>Facility Design and Construction</subject><subject>Fall prevention</subject><subject>Falls</subject><subject>Human physiology applied to population studies and life conditions. Human ecophysiology</subject><subject>Humans</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Middle Aged</subject><subject>Occupational Health</subject><subject>Orientation - physiology</subject><subject>Photic Stimulation</subject><subject>Postural Balance - physiology</subject><subject>Psychomotor Performance - physiology</subject><subject>Roof construction</subject><subject>Surface Properties</subject><subject>Task Performance and Analysis</subject><subject>Visual reference</subject><subject>Visual task performance</subject><subject>West Virginia</subject><subject>Workers</subject><issn>0003-6870</issn><issn>1872-9126</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkU2LFDEQhoMo7uzqPxAJgnvrtpJOJ-mLsCzrByx40XPIpCtLhp6kTboHFvzxZpxBwYOeijd5UlTqIeQVg5YBk-92rZ0xP6SWA-iWsRZAPSEbphVvBsblU7IBgK6RWsEFuSxlV6MWrH9OLtjAAHquNuTHnffolnDAiKXQ5OkB8xKcneghlLWWjB4zRofUp1zTuLoQH-icyrLmeh9iWew2TGF5pCnW6KYQcaQ2jtSl_TwFGxda1uytw0LtQnHCg11Cii_IM2-ngi_P9Yp8-3D39fZTc__l4-fbm_vG9UwsTSe8cJ0cB6m45r22zmpkg3Yatr2ywgkJ2EE991qg0LJXHXQjOs4HJZXrrsj1qe-c0_cVy2L2oTicJhsxrcVIOYhOgfovyEEwOfChgm_-AndpzbF-ojI914OQvELiBLmcSql7NHMOe5sfDQNzdGh25uTQHB0axgz8GuL1ufe63eP459FZWgXengFbqiifbXSh_OY440prJir3_sRh3e0hYDbFhaPJMeTq3Iwp_HuSn3qfvTI</recordid><startdate>20090501</startdate><enddate>20090501</enddate><creator>Simeonov, Peter</creator><creator>Hsiao, Hongwei</creator><creator>Hendricks, Scott</creator><general>Elsevier Ltd</general><general>Elsevier</general><general>Elsevier Science Ltd</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7T2</scope><scope>C1K</scope><scope>7U1</scope><scope>7U2</scope><scope>7X8</scope></search><sort><creationdate>20090501</creationdate><title>Effectiveness of vertical visual reference for reducing postural instability on inclined and compliant surfaces at elevation</title><author>Simeonov, Peter ; Hsiao, Hongwei ; Hendricks, Scott</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c514t-34f4c36d96728258aca8e198c80b57a4c460e308acf84e48657303dec229767c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Accidental Falls - prevention & control</topic><topic>Adult</topic><topic>Applied physiology</topic><topic>Balance control</topic><topic>Biological and medical sciences</topic><topic>Biomechanical Phenomena</topic><topic>Construction industry</topic><topic>Effectiveness</topic><topic>Effectiveness studies</topic><topic>Ergonomics</topic><topic>Ergonomics. Work place. Occupational physiology</topic><topic>Facility Design and Construction</topic><topic>Fall prevention</topic><topic>Falls</topic><topic>Human physiology applied to population studies and life conditions. 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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.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><pmid>19100527</pmid><doi>10.1016/j.apergo.2008.11.007</doi><tpages>9</tpages></addata></record> |
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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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