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Physical Performance and Physical Activity in Older Adults: Associated but Separate Domains of Physical Function in Old Age

Author

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  • Rob C van Lummel
  • Stefan Walgaard
  • Mirjam Pijnappels
  • Petra J M Elders
  • Judith Garcia-Aymerich
  • Jaap H van Dieën
  • Peter J Beek

Abstract

Background: Physical function is a crucial factor in the prevention and treatment of health conditions in older adults and is usually measured objectively with physical performance tests and/or physical activity monitoring. Objective: To examine whether 1) physical performance (PP) and physical activity (PA) constitute separate domains of physical function; 2) differentiation of PA classes is more informative than overall PA. Design: Cross-sectional study to explore the relationships within and among PP and PA measures. Methods: In 49 older participants (83±7 years; M±SD), performance-based tests were conducted and PA was measured for one week. Activity monitor data were reduced in terms of duration, periods, and mean duration of periods of lying, sitting, standing and locomotion. The relation between and within PP scores and PA outcomes were analysed using rank order correlation and factor analysis. Results: Factor structure after varimax rotation revealed two orthogonal factors explaining 78% of the variance in the data: one comprising all PA variables and one comprising all PP variables. PP scores correlated moderately with PA in daily life. Differentiation of activity types and quantification of their duration, intensity and frequency of occurrence provided stronger associations with PP, as compared to a single measure of acceleration expressing overall PA. Limitations: For independent validation, the conclusions about the validity of the presented conceptual framework and its clinical implications need to be confirmed in other studies. Conclusions: PP and PA represent associated but separate domains of physical function, suggesting that an improvement of PP does not automatically imply an increase of PA, i.e. a change to a more active lifestyle. Differentiation of activity classes in the analysis of PA provides more insights into PA and its association with PP than using a single overall measure of acceleration.

Suggested Citation

  • Rob C van Lummel & Stefan Walgaard & Mirjam Pijnappels & Petra J M Elders & Judith Garcia-Aymerich & Jaap H van Dieën & Peter J Beek, 2015. "Physical Performance and Physical Activity in Older Adults: Associated but Separate Domains of Physical Function in Old Age," PLOS ONE, Public Library of Science, vol. 10(12), pages 1-16, December.
    • Handle: RePEc:plo:pone00:0144048
    DOI: 10.1371/journal.pone.0144048
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    Cited by:

    1. Eleftheria Giannouli & Otmar Bock & Wiebren Zijlstra, 2018. "Cognitive functioning is more closely related to real-life mobility than to laboratory-based mobility parameters," European Journal of Ageing, Springer, vol. 15(1), pages 57-65, March.
    2. Dawid Koźlenia & Jarosław Domaradzki, 2021. "The Impact of Physical Performance on Functional Movement Screen Scores and Asymmetries in Female University Physical Education Students," IJERPH, MDPI, vol. 18(16), pages 1-11, August.
    3. Heikki Hurri & Toni Vänni & Elli Muttonen & Fabrizio Russo & Sergio Iavicoli & Leena Ristolainen, 2023. "Functional Tests Predicting Return to Work of Workers with Non-Specific Low Back Pain: Are There Any Validated and Usable Functional Tests for Occupational Health Services in Everyday Practice? A Syst," IJERPH, MDPI, vol. 20(6), pages 1-16, March.
    4. Julia Seinsche & Wiebren Zijlstra & Eleftheria Giannouli, 2020. "Motility in Frail Older Adults: Operationalization of a New Framework and First Insights into Its Relationship with Physical Activity and Life-Space Mobility: An Exploratory Study," IJERPH, MDPI, vol. 17(23), pages 1-20, November.

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