alexa A Comparison between Static and Dynamic Stability in Po
ISSN-2165-7556

Journal of Ergonomics
Open Access

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Research Article

A Comparison between Static and Dynamic Stability in Postural Sway and Fall Risks

Hamideh Razavi*

Department of Industrial Engineering, Ferdowsi University of Mashhad, Azadi Square, Iran

*Corresponding Author:
Hamideh Razavi
Associate Professor
Department of Industrial Engineering
Ferdowsi University of Mashhad
Azadi Square, Iran
Tel: 00985138805126
E-mail: [email protected]

Received Date: December 30, 2016; Accepted Date: January 20, 2017; Published Date: January 27, 2017

Citation: Razavi H (2017) A Comparison between Static and Dynamic Stability in Postural Sway and Fall Risks. J Ergonomics 7:186. doi: 10.4172/2165-7556.1000186

Copyright: © 2017 Razavi H, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

The purpose of this study is to investigate the static stability of postural sway and compare it with dynamic stability by practical experiments. It can help the selection of appropriate personnel for highly exposed tasks and reduce fall risks and injuries. For static stability, index of COG% is defined regarding anthropometric specifications including height, BOS width and length and sway angles. Therefore, tabular guidelines can be developed so that balance status for each operator can be anticipated. In terms of dynamic stability, maximum Lyapanov exponents are calculated for time series data collected from gait analyzer tests and a written code in Matlab. The results reveal acceptable correlation between index of static and dynamic stability and hence can provide useful information for ergonomic concerns.

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