Article

Dyslexic children show impaired in postural stability.
The aim of our study was
to test the influence of foot soles and visual information on the postural
control of dyslexic children, compared to non-dyslexic children. Postural
stability was evaluated with TechnoConcept(R) platform in twenty-four dyslexic
children (mean age: 9.3+/-0.29years) and in twenty-four non-dyslexic children,
gender- and age-matched, in two postural conditions (with and without foam: a
4-mm foam was put under their feet or not) and in two visual conditions (eyes
open and eyes closed). We measured the surface area, the length and the mean
velocity of the center of pressure (CoP). Moreover, we calculated the Romberg
Quotient (RQ). Our results showed that the surface area, length and mean velocity
of the CoP were significantly greater in the dyslexic children compared to the
non-dyslexic children, particularly with foam and eyes closed. Furthermore, the
RQ was significantly smaller in the dyslexic children and significantly greater
without foam than with foam.
All these findings suggest that dyslexic children
are not able to compensate with other available inputs when sensorial inputs are
less informative (with foam, or eyes closed), which results in poor postural
stability. We suggest that the impairment of the cerebellar integration of all
the sensorial inputs is responsible for the postural deficits observed in
dyslexic children.
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Langue : ANGLAIS