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The effects of obesity and standing time on postural sway during prolonged quiet standing.

Authors
Singh-D; Park-W; Levy-MS; Jung-ES
Source
Ergonomics 2009 Aug; 52(8):977-986
NIOSHTIC No.
20035987
Abstract
This study examined the effects of obesity level, standing time and their interaction on postural sway during a prolonged quiet upright standing task. Ten extremely obese (BMI > 40 kg/m(2)) and 10 non-obese (18.5 kg/m(2) < BMI < 24.9 kg/m(2)) participants performed quiet upright standing on a force plate for over 18 min. Eleven postural sway measures were computed for each 1-min time interval based on the centre-of-pressure data from the force plate. ANOVA and regression analyses showed that for all the 11 postural sway measures, the extremely obese group had higher postural sway than the non-obese at the beginning of the prolonged standing task and postural sway increased significantly faster for the extremely obese group than the non-obese over time. The results suggest that obesity may impair postural control and may be a risk factor of balance loss and falls, especially during prolonged physical work activities. The research findings are relevant to identifying and reducing risks of balance loss and falls in various workplace settings for a wide variety of workers.
Keywords
Biological-effects; Biological-function; Biological-monitoring; Biomechanics; Ergonomics; Physiological-effects; Physiological-function; Physiological-measurements; Physiological-response; Physiological-stress; Posture; Statistical-analysis; Stress; Weight-factors; Weight-measurement; Work-analysis; Work-operations; Work-performance; Author Keywords: obesity; postural sway; functional reach; balance loss; fall; prolonged standing
Contact
W. Park, Department of Industrial and Systems Engineering, Auburn University - 3301 Shelby Center, AL 36849-5346, USA
CODEN
ERGOAX
Publication Date
20090801
Document Type
Journal Article
Email Address
wzp0006@auburn.edu; woojinp72@gmail.com
Funding Type
Grant
Fiscal Year
2009
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-T42-OH-008432
Issue of Publication
8
ISSN
0014-0139
Source Name
Ergonomics
State
OH; AL
Performing Organization
University of Cincinnati
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