Article

We compared the spatio-temporal postural organization between stroke patients and
healthy controls in a bipedal standing task where participants had to
intentionally produce two specific ankle/hip coordination patterns: in-phase and
anti-phase. The pattern to reproduce was visually represented by a ankle-hip
Lissajous figure, and a real-time biofeedback displayed the current coordination
sur-imposed to the expected coordination. Contrary to the healthy participants
who were successful at reproducing the two patterns, stroke patients were unable
to produce the in-phase pattern. In addition, when the anti-phase pattern was
required, a reduction of stability was observed for the stroke group. The impairment of postural capacities following stroke was thus accompanied by a disappearance of one of the two preferred patterns found in healthy participants,
a result that have consequences for understanding the etiology of postural
pattern formation and the elaboration of rehabilitation programs.
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Langue : ANGLAIS