Abstract
The aim of this study was to investigate the effect of a cognitive task on standing postural control of the injured and non-injured leg of athletes with chronic ankle instability. Postural stability was measured by center of pressure parameters while chronic ankle instability patients (n=8) randomly performed single and double leg standing in isolation or concurrently with a digit-backward cognitive task. After performing a concurrent cognitive task, anteroposterior sway significantly decreased in injured leg (P<0.05) and area significantly decreased in both injured and non-injured legs (P<0.05). There was no significant difference in all center of pressure parameters between injured and non-injured legs. The findings confirm the effect of a concurrent digit-backwards memory task on single leg standing balance in chronic ankle instability patients but the response to cognitive loading was not significantly different between the injured and non-injured legs.
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