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Longitudinal Associations between Physical and Cognitive Performance among Community-Dwelling Older Adults

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  • Magdalena I Tolea
  • John C Morris
  • James E Galvin

Abstract

To assess the directionality of the association between physical and cognitive decline in later life, we compared patterns of decline in performance across groups defined by baseline presence of cognitive and/or physical impairment [none (n = 217); physical only (n = 169); cognitive only (n = 158), or both (n = 220)] in a large sample of participants in a cognitive aging study at the Knight Alzheimer’s Disease Research Center at Washington University in St. Louis who were followed for up to 8 years (3,079 observations). Rates of decline reached 20% for physical performance and varied across cognitive tests (global, memory, speed, executive function, and visuospatial skills). We found that physical decline was better predicted by baseline cognitive impairment (slope = -1.22, p

Suggested Citation

  • Magdalena I Tolea & John C Morris & James E Galvin, 2015. "Longitudinal Associations between Physical and Cognitive Performance among Community-Dwelling Older Adults," PLOS ONE, Public Library of Science, vol. 10(4), pages 1-12, April.
    • Handle: RePEc:plo:pone00:0122878
    DOI: 10.1371/journal.pone.0122878
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