Article

We investigate the complementarities of several measures extracted from center of
pressure (COP) recordings during quiet standing, in older women. The selected
variables include classical stabilometric measures (SMs) and several dynamical
measures (DMs). The computed DMs quantify various features of the temporal
structure of COP signals, including predictability, regularity and smoothness of
the trajectories. The postural fluctuations of a group of 101 healthy older women
were recorded by means of a force platform. After estimating the SMs and DMs from
the COP data, we used principal components analysis (PCA) to quantify the
contribution of each measure. The results suggest that SMs and DMs are
complementary. In addition, the different DMs are globally not redundant. This
finding is a reinforcement argument in favor of the use of DMs as postural
signatures.
CI - Copyright (c) 2012 Elsevier B.V. All rights reserved.

Langue : ANGLAIS