Cognitive stimulation and cognitive and functional decline in Alzheimer's disease: the cache county dementia progression study.

Published

Journal Article

OBJECTIVES: To examine the association of engagement in cognitively stimulating activities with cognitive and functional decline in a population-based sample of incident Alzheimer's disease (AD). METHOD: After diagnosis, 187 participants (65% females) were followed semiannually for a mean 2.7 (SD = 0.4) years. Mean age and education were 84.6 (SD = 5.8) and 13.2 (SD = 2.9) years. Caregivers enumerated cognitively stimulating leisure activities via the Lifestyle Activities Questionnaire. Cognition was assessed using the Mini-Mental State Examination and functional ability via the Clinical Dementia Rating sum of boxes. Linear mixed models tested the association between stimulating activities and change over time in each outcome. Covariates were demographic factors, estimated premorbid IQ, presence/absence of the APOE ε4 allele, duration of dementia, level of physical activity, and general health. RESULTS: At initial assessment, 87% of participants were engaged in one or more stimulating activities, with mean (SD) activities = 4.0 (3.0). This number declined to 2.4 (2.0) at the final visit. There was a statistical interaction between dementia duration and number of activities in predicting rate of cognitive decline (p = .02) and overall functional ability (p = .006). DISCUSSION: Active involvement in cognitively stimulating pursuits may be beneficial for persons with AD.

Full Text

Duke Authors

Cited Authors

  • Treiber, KA; Carlson, MC; Corcoran, C; Norton, MC; Breitner, JCS; Piercy, KW; Deberard, MS; Stein, D; Foley, B; Welsh-Bohmer, KA; Frye, A; Lyketsos, CG; Tschanz, JT

Published Date

  • July 2011

Published In

Volume / Issue

  • 66 / 4

Start / End Page

  • 416 - 425

PubMed ID

  • 21441386

Pubmed Central ID

  • 21441386

Electronic International Standard Serial Number (EISSN)

  • 1758-5368

Digital Object Identifier (DOI)

  • 10.1093/geronb/gbr023

Language

  • eng

Conference Location

  • United States