Simplest tasks have greatest dual task interference with balance in brain injured adults

Brauer, SG, Broome, A, Stone, C, Clewett, S and Herzig, P (2004) Simplest tasks have greatest dual task interference with balance in brain injured adults. Human Movement Science, 23 3-4: 489-502. doi:10.1016/j.humov.2004.08.020

Author Brauer, SG
Broome, A
Stone, C
Clewett, S
Herzig, P
Title Simplest tasks have greatest dual task interference with balance in brain injured adults
Journal name Human Movement Science   Check publisher's open access policy
ISSN 0167-9457
Publication date 2004
Sub-type Article (original research)
DOI 10.1016/j.humov.2004.08.020
Volume 23
Issue 3-4
Start page 489
End page 502
Total pages 14
Editor P..J. Beek
Place of publication Amsterdam
Publisher Elsevier
Collection year 2004
Language eng
Subject C1
321024 Rehabilitation and Therapy - Occupational and Physical
730303 Occupational, speech and physiotherapy
Abstract Attention difficulties and poor balance are both common sequel following a brain injury. This study aimed to determine whether brain injured adults had greater difficulty than controls in performing a basic balance task while concurrently completing several different cognitive tasks varying in visuo-spatial attentional load and complexity. Twenty brain injured adults and 20 age-, sex- and education level-matched controls performed a balance-only task (step stance held for 30s), five cognitive-only tasks (simple and complex non-spatial, visuo-spatial, and a control articulation task), and both together (dual tasks). Brain injured adults showed a greater centre of pressure (COP) excursion and velocity in all conditions than controls. Brain injured adults also demonstrated greater interference with balance when concurrently performing two cognitive tasks than control subjects. These were the control articulation and the simple non-spatial task. It is likely that distractibility during these simple tasks contributed to an increase in COP motion and interference with postural stability in stance. Performing visuo-spatial tasks concurrently with the balance task did not result in any change in COP motion. Dual task interference in this group is thus unlikely to be due to structural interference. Similarly, as the more complex tasks did not uniformly result in increased interference, a reduction in attentional capacity in the brain injured population is unlikely to be the primary cause of dual task interference in this group. (C) 2004 Elsevier B.V. All rights reserved.
Keyword Neurosciences
Sport Sciences
Psychology, Experimental
Brain Injury
Postural Control
Attentional Demands
Cognitive Tasks
Body Sway
Q-Index Code C1

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Created: Wed, 15 Aug 2007, 03:53:28 EST