Postural control and cognitive task performance in healthy participants while balancing on different support-surface configurations.
SourceGait & Posture, 14, 3, (2001), pp. 248--55
Article / Letter to editor
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Gait & Posture
SubjectBrain and Behaviour / Bioelectricity; Hersenen en Gedrag / Bio-elektriciteit
Postural control during normal upright stance in humans is a well-learned task. Hence, it has often been argued that it requires very little attention. However, many studies have recently shown that postural control is modified when a cognitive task is executed simultaneously especially in the elderly and in the presence of pathology. This study examined postural control modifications when a cognitive task of varying difficulty levels is added. Postural stance difficulty was also varied. Results from this study suggest that a generalized capacity interference may occur due to the larger interference found with the addition of a cognitive task in the more novel and difficult postural task. Because the performance of the cognitive task was tapered by a speed-difficulty trade-off, it was not possible to determine whether a change in the level of difficulty of the cognitive task occurred and if it would produce larger dual-task interference.
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