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Role for Physical Fitness in the Association between Age and Cognitive Function in Older Adults: A Mediation Analysis of the SABE Colombia Study

Author

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  • Miguel Ángel Pérez-Sousa

    (Faculty of Sport Sciences, University of Extremadura, 10003 Cáceres, Spain
    Epidemiology of Physical Activity and Fitness Across Lifespan Research Group, University of Seville, 41092 Seville, Spain)

  • Jesús del Pozo-Cruz

    (Epidemiology of Physical Activity and Fitness Across Lifespan Research Group, University of Seville, 41092 Seville, Spain
    Department of Physical Education and Sport, University of Seville, 41092 Seville, Spain)

  • Pedro R. Olivares

    (Faculty of Education, Psychology and Sport Sciences, University of Huelva, Avenida de las Fuerzas Armadas s/n 21007, 21007 Huelva, Spain
    Instituto de Actividad Fisica y Salud, Universidad Autonoma de Chile, 1670 Talca, Chile)

  • Carlos A. Cano-Gutiérrez

    (Hospital Universitario San Ignacio–Aging Institute, Pontificia Universidad Javeriana, Bogotá 110111, Colombia)

  • Mikel Izquierdo

    (Navarrabiomed-Universidad Pública de Navarra (UPNA), Complejo Hospitalario de Navarra (CHN), Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, 31008 Navarra, Spain
    CIBER of Frailty and Healthy Aging (CIBERFES), Instituto de Salud Carlos III, Pamplona, 28029 Navarra, Spain)

  • Robinson Ramírez-Vélez

    (Navarrabiomed-Universidad Pública de Navarra (UPNA), Complejo Hospitalario de Navarra (CHN), Instituto de Investigación Sanitaria de Navarra (IdiSNA), Pamplona, 31008 Navarra, Spain
    CIBER of Frailty and Healthy Aging (CIBERFES), Instituto de Salud Carlos III, Pamplona, 28029 Navarra, Spain)

Abstract

Objectives. We investigated the association between physical fitness and cognitive status. Further, we examined whether physical fitness mediates the association between cognitive functioning and aging. Design. Cross-sectional study. Setting. Urban and rural Colombian older adults. Methods. 4416 participants from the SABE study were included in the current analysis. Physical fitness was assessed with the handgrip test and the usual gait speed test. Cognitive status was evaluated through the Folstein Mini-Mental State Examination. A parallel mediation path was used to test the possible mediator role of physical fitness between aging and cognitive functioning. Results. Older adults with lower handgrip strength (HGS) were more likely to have mild-cognitive status than older adults with healthy HGS (OR = 1.53, 95% CI = 1.15; 2.02). In addition, older adults with a slower gait speed were more likely to have mild cognitive impairment (OR = 2.05, 95% CI = 1.54; 2.78). Age had an inverse relationship with cognitive function (β = −0.110, 95% CI = −0.130; −0.100) and it was also inversely associated with HGS (β = −0.003, 95% CI = −0.005; −0.002) and gait speed (β = −0.010, 95% CI = −0.011; −0.009). The indirect effects, which indicate that the effect of age on cognitive function is transmitted through mediators, showed that both gait speed (β = −0.028, 95% CI = −0.036; −0.020) and HGS (β = −0.014, 95% CI = −0.024; −0.005) were independent mediators of the detrimental effect of aging on cognitive function. Conclusions. Physical fitness mediates the effects of aging on cognitive functioning. Our findings suggest that physical activity can be a key factor to prevent cognitive deterioration during aging process.

Suggested Citation

  • Miguel Ángel Pérez-Sousa & Jesús del Pozo-Cruz & Pedro R. Olivares & Carlos A. Cano-Gutiérrez & Mikel Izquierdo & Robinson Ramírez-Vélez, 2021. "Role for Physical Fitness in the Association between Age and Cognitive Function in Older Adults: A Mediation Analysis of the SABE Colombia Study," IJERPH, MDPI, vol. 18(2), pages 1-11, January.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:2:p:751-:d:481783
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    References listed on IDEAS

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    1. Ana Luisa Sosa & Emiliano Albanese, 2012. "Prevalence, Distribution, and Impact of Mild Cognitive Impairment in Latin America, China, and India: A 10/66 Population-Based Study," Working Papers id:4866, eSocialSciences.
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