How performing a mental arithmetic task modify the regulation of centre of foot pressure displacements during bipedal quiet standing |
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Authors: | Nicolas Vuillerme Hervé Vincent |
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Institution: | (1) Laboratoire de Modélisation des Activités Sportives, Université de Savoie, Domaine Universitaire, 73 376 Le Bourget du Lac cédex, France;(2) Laboratoire des Techniques de l’Imagerie, de la Modélisation et de la Cognition, Institut des Mathématiques Appliquées de Grenoble, Grenoble, France |
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Abstract: | We investigated the effect of performing a mental arithmetic task with two levels of difficulty on the regulation of centre
of foot pressure (COP) displacements during bipedal quiet standing in young healthy individuals. There was also a control
condition in which no concurrent task was required. A space-time-domain analysis showed decreased COP displacements, along
the antero–posterior axis, when participants concurrently performed the most difficult mental arithmetic task. Frequency-domain
and stabilogram-diffusion analyses further suggested these decreased COP displacements to be associated with an increased
stiffness and a reduction of the exploratory behaviours in the short term, respectively. |
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Keywords: | Postural control Mental task Centre of foot pressure |
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