Article

The purpose of this study was to quantitatively and qualitatively assess dynamic
balance with accuracy in individuals with chronic ankle instability (CAI). To
this aim, a motion capture system was used while participants performed the Star
Excursion Balance Test (SEBT). Reached distances for the 8 points of the star
were automatically computed, thereby excluding any dependence to the
experimenter. In addition, new relevant variables were also computed, such as
absolute time needed to reach each distance, lower limb ranges of motion during
unipodal stance, as well as absolute error of pointing. Velocity of the center of
pressure and range of variation of ground reaction forces have also been assessed
during the unipodal phase of the SEBT thanks to force plates. CAI group exhibited
smaller reached distances and greater absolute error of pointing than the control
group (p<0.05). Moreover, the ranges of motion of lower limbs joints, the
velocity of the center of pressure and the range of variation of the ground
reaction forces were all significantly smaller in the CAI group (p<0.05). These
reduced quantitative and qualitative performances highlighted a lower dynamic
postural control. The limited body movements and accelerations during the
unipodal stance in the CAI group could highlight a protective strategy. The
present findings could help clinicians to better understand the motor strategies
used by CAI patients during dynamic balance and may guide the rehabilitation
process.
CI - Copyright (c) 2016 Elsevier B.V. All rights reserved.

Langue : ANGLAIS