Jayakody, O and Breslin, M and Stuart, K and Vickers, JC and Callisaya, ML, The associations between dual-task walking under three different interference conditions and cognitive function, Gait and Posture, 82 pp. 174-180. ISSN 0966-6362 (2020) [Refereed Article]
Copyright 2020 Elsevier B.V. All rights reserved.
Methods: Participants (n = 91) were adults aged between 56-83 years (mean 68.8, SD 6.7). Under single- and dual-task, gait speed was obtained using a computerized mat. For the dual-task there were three conditions: 1) reciting alternate letters of the alphabet (DT-alpha); 2) counting backwards in 3 s (DT-counting); and 3) recalling words from a shopping list (DT-recall). Dual-task interference in gait and cognition were calculated as: (dual task-single task)/single task×100 and summed to obtain total interference. The cognitive domains of executive function, processing speed, working memory, verbal fluency, visuospatial function and verbal memory (recall and recognition) were assessed using a battery of neuropsychological tests. Raw test scores were subjected to principal component analysis to derive a global cognition score. Partial correlations were used to determine the strength of associations between single- and dual-task measures and cognitive scores, adjusting for age, sex and education.
Results: The strongest significant associations for each cognitive outcome variable were between greater total interference under DT-alpha and lower global cognition (r = 0.25), working memory (r = 0.28) and verbal memory [recognition] (r = 0.21), greater gait interference under DT-alpha and slower processing speed (r = 0.43) and single-task gait speed and verbal fluency (r = 0.23). Associations between dual-task measures and cognition were generally weaker under the DT-counting and DT-recall.
Significance: Calculating total and gait interference during DT-alpha may be the most useful in order to identify adults with poorer cognition.
|Item Type:||Refereed Article|
|Keywords:||cognition, dementia, dual-task walking, gait, primary health care|
|Research Division:||Health Sciences|
|Research Group:||Health services and systems|
|Research Field:||Primary health care|
|Objective Group:||Specific population health (excl. Indigenous health)|
|Objective Field:||Health related to ageing|
|UTAS Author:||Jayakody, O (Ms Shanika Jayakody Arachchige Dona)|
|UTAS Author:||Breslin, M (Dr Monique Breslin)|
|UTAS Author:||Stuart, K (Miss Kimberley Stuart)|
|UTAS Author:||Vickers, JC (Professor James Vickers)|
|UTAS Author:||Callisaya, ML (Dr Michele Callisaya)|
|Web of Science® Times Cited:||2|
|Deposited By:||Menzies Institute for Medical Research|
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