Nonlinear Analysis of Proprioceptive Training Induced Changes in Postural Control on a Dynamic Surface

by Haworth, Joshua Lewis

Abstract (Summary)
This research seeks to describe the postural sway performance of participants during quiet stance on a dynamic surface, longitudinally throughout a balance training program. A nonlinear method of data processing was presented, along with traditional linear statistics, as an effective movement descriptor. COP was measured on a compliant surface atop a force plate, during each laboratory visit. Results show no change in COP range, change in variability only in the anteroposterior direction, and reductions in both velocity and LyE in the mediolateral and anteroposterior directions. Reduced LyE values indicate a more periodic (self-similar) structure within the COP path. It appears that the participants were able to develop a more calculated approach to the maintenance of balance by moving both more slowly and with a more regular movement pattern. Support for the use of both a dynamic surface and a nonlinear analysis for the evaluation of postural sway has been provided.
Bibliographical Information:


School:Miami University

School Location:USA - Ohio

Source Type:Master's Thesis

Keywords:postural sway nonlinear analysis dynamic surface balance training proprioception center of pressure lyapunov exponent control emergent behavior


Date of Publication:01/01/2008

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