Local Assessment of Statokinesigram Dynamics in Time: An in-Depth Look at the Scoring Algorithm
Ioannis Bargiotas, Julien Audiffren, Nicolas Vayatis, Pierre-Paul Vidal, Alain P. Yelnik, Damien Ricard
⚠ This is a preprint. It may change before it is accepted for publication.

Abstract

In this work we discuss the multidimensional scoring approach proposed by Bargiotas and al. [I. Bargiotas, J. Audiffren, N. Vayatis, P-P. Vidal, S. Buffat, A.P. Yelnik and Damien Ricard, On the importance of local dynamics in statokinesigram: a multivariate approach for postural control evaluation in elderly, PloS one, 13 (2018)] which locally characterizes statokinesigrams - the trajectory of the center of pressure, which is highly correlated with static balance quality - on small time intervals, or blocks. This approach highlights the local dynamics of the trajectories, and we show that the resulting characterization can be used to provide a global score in order to evaluate the postural control. We evaluate our approach using the statokinesigram of 126 community-dwelling elderly, and show that it provides an efficient tool to discriminate between fallers and non-fallers.

Download