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    Distinct Trajectories of Individual Physical Performance Measures Across 9 Years in 60-to 70-Year-Old Adults

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    Author
    Hoekstra, T; Rojer, AGM; van Schoor, NM; Maier, AB; Pijnappels, M
    Date
    2020-10-01
    Source Title
    Journal of Gerontology Series A: Biological Sciences and Medical Sciences
    Publisher
    OXFORD UNIV PRESS INC
    University of Melbourne Author/s
    Maier, Andrea
    Affiliation
    Medicine and Radiology
    Metadata
    Show full item record
    Document Type
    Journal Article
    Citations
    Hoekstra, T., Rojer, A. G. M., van Schoor, N. M., Maier, A. B. & Pijnappels, M. (2020). Distinct Trajectories of Individual Physical Performance Measures Across 9 Years in 60-to 70-Year-Old Adults. JOURNALS OF GERONTOLOGY SERIES A-BIOLOGICAL SCIENCES AND MEDICAL SCIENCES, 75 (10), pp.1951-1959. https://doi.org/10.1093/gerona/glaa045.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/251446
    DOI
    10.1093/gerona/glaa045
    Open Access at PMC
    http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7518554
    Abstract
    BACKGROUND: Physical performance is an important factor for successful aging. This study aimed to identify distinct trajectories of multiple physical performance measures over 9 years in individuals aged 60-70 years and to evaluate their characteristics and the overlap between measures. METHODS: Four physical performance measures were assessed in 440 participants of the Longitudinal Aging Study Amsterdam: tandem stand, gait speed, chair stand, and handgrip strength. Gender-specific latent class models were conducted to obtain distinct trajectories and their degree of overlap. RESULTS: Mean age at baseline was 67.9 (SD 1.7) years for males and 68.0 (SD 1.7) years for females. The optimal number of trajectories differed across measures. For tandem stand, no distinct trajectories were found (all 179 males, 198 females). For gait speed, three trajectories were identified, dependent on baseline speed: high-stable (47 males, 27 females), intermediate-stable (132 males, 130 females), and low-declining performance (6 males, 48 females). Two trajectories were identified for the chair stand: a stable (168 males, 150 females) and declining trajectory (10 males, 38 females). For handgrip strength, three declining trajectories were identified differing in baseline performance: high (55 males, 75 females), intermediate (111 males, 118 females), and low (17 males, 10 females). Overall, 11.9% of males and 5.7% of females were classified in similar trajectories across measures. CONCLUSIONS: Trajectories of physical performance were heterogeneous, but showed similar patterns for males and females. Little overlap between measures was shown, suggesting different mechanisms for decline. This study emphasizes the use of multiple domains to assess physical performance.

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