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Cognitive function and walking velocity in people with dementia: a comparison of backward and forward walking
Umeå University, Faculty of Medicine, Department of Community Medicine and Rehabilitation, Physiotherapy.
Umeå University, Faculty of Medicine, Department of Community Medicine and Rehabilitation, Physiotherapy.
Umeå University, Faculty of Medicine, Department of Community Medicine and Rehabilitation, Physiotherapy. Umeå University, Faculty of Medicine, Department of Community Medicine and Rehabilitation, Geriatric Medicine.
Umeå University, Faculty of Medicine, Department of Community Medicine and Rehabilitation, Geriatric Medicine.
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2017 (English)In: Gait & Posture, ISSN 0966-6362, E-ISSN 1879-2219, Vol. 58, p. 481-486Article in journal (Refereed) Published
Abstract [en]

How forward and backward walking, both central to everyday life, relate to cognition are relatively unexplored in people with dementia. This study aimed to investigate if forward and backward walking velocity respectively, associated with global cognition and executive function in people with dementia, and whether the association differed according to walking aid use or dementia type. Using a cross-sectional design, 161 participants (77% women), a mean Mini-Mental State Examination (MMSE) score of 15, and mean age of 85.5 years and living in nursing homes were included. Self-paced forward walking (FW) and backward walking (BW) velocity over 2.4 m was measured. Global cognitive outcome measurements included MMSE and Alzheimer Disease Assessment Scale - Cognitive subscale (ADAS-Cog). Executive function was measured using Verbal Fluency (VF). In comprehensively adjusted multivariate linear regression analyses, FW was independently associated with VF (p = 0.001), but not MMSE (p = 0.126) or ADAS-Cog (p = 0.818). BW was independently associated with VF (p = 0.043) and MMSE (p = 0.022), but not ADAS-Cog (p = 0.519). Interaction analyses showed that the association between BW velocity and executive function were stronger in participants who walked without a walking aid. No associations differed according to dementia type. In conclusion, executive function appears important to walking velocity, both forward and backward, in people with dementia with mild to moderately severe cognitive impairment. Global cognitive function was associated with backward walking only, perhaps due to it being more challenging. The association between BW velocity and executive function differed according to use of walking aids, which appeared to attenuate the association.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 58, p. 481-486
Keywords [en]
Cognition, Walking aids, Frail elderly, Dementia, Walking speed, Nursing homes
National Category
Neurology Orthopaedics Sport and Fitness Sciences Geriatrics
Identifiers
URN: urn:nbn:se:umu:diva-142473DOI: 10.1016/j.gaitpost.2017.09.009ISI: 000415234200080PubMedID: 28926815OAI: oai:DiVA.org:umu-142473DiVA, id: diva2:1162442
Available from: 2017-12-04 Created: 2017-12-04 Last updated: 2018-06-09Bibliographically approved

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Lundin-Olsson, LillemorLittbrand, HåkanGustafson, YngveRosendahl, ErikToots, Annika

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Lundin-Olsson, LillemorLittbrand, HåkanGustafson, YngveRosendahl, ErikToots, Annika
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