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Comparing standing balance at real and virtual elevated environments.

Authors
Simeonov-P; Hsiao-H; Dotson-B; Ammons-D
Source
Proceedings of the Human Factors and Ergonomics Society 46th Annual Meeting, September 29 - October 4, 2002, Baltimore, Maryland, Bringing Fundamentals & New Opportunities. Santa Monica, CA: Human Factors and Ergonomics Society, 2002 Sep; 46(Virt Env):2169-2173
NIOSHTIC No.
20023144
Abstract
The study evaluated the efficacy of a surround-screen virtual reality (SSVR) system in simulating heights for studying human postural balance at elevation. Twenty four subjects performed standing tasks at 9-m elevation and ground level, on firm and deformable surfaces, in a real environment (RE) and a comparable virtual environment (VB). The RE was the interior of the high-bay laboratory at the National Institute for Occupational Safety and Health (NIOSH) in Morgantown, West Virginia; the VB simulated this environment in the SSVR system. Medial-lateral and anterior-posterior body sways and mean velocity of the human center-of-pressure displacement were collected using a force platform. The results indicated that the sway parameters were similar in VB and RE at elevation on both firm and deformable surfaces. At ground level, the sway parameters were significantly increased in the VB compared to the RE on a deformable surface, but not on a firm surface. It appears that visual simulation of elevated environments within a SSVR is adequate for studying the risk factors leading to losing balance and fall incidents.
Keywords
Posture; Environmental-factors; Risk-factors; Injuries; Height-factors; Simulation-methods; Sensory-perceptual-processes
CODEN
PHFSDQ
Publication Date
20020901
Document Type
Conference/Symposia Proceedings
Fiscal Year
2002
NTIS Accession No.
NTIS Price
ISBN No.
9780945289203
Issue of Publication
Virt Env
ISSN
1071-1813
NIOSH Division
DSR
Priority Area
Disease and Injury: Traumatic Injuries
Source Name
Proceedings of the Human Factors and Ergonomics Society 46th Annual Meeting, September 29 - October 4, 2002, Baltimore, Maryland, Bringing Fundamentals & New Opportunities
State
WV
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