Physical activity may not be associated with long‐term risk of dementia and Alzheimer’s disease
Kunutsor, S. K., Laukkanen, J. A., Kauhanen, J., & Willeit, P. (2021). Physical activity may not be associated with long‐term risk of dementia and Alzheimer’s disease. European Journal of Clinical Investigation, 51(3), Article e13415. https://doi.org/10.1111/eci.13415
Julkaistu sarjassa
European Journal of Clinical InvestigationPäivämäärä
2021Tekijänoikeudet
© 2020 The Authors.
Background
While it is well established that physical activity is associated with reduced risk of vascular and non‐vascular outcomes as well as mortality, evidence on the association between physical activity and dementia is inconsistent. We aimed to assess the associations of physical activity with the risk of dementia and Alzheimer’s disease (AD).
Material and methods
We analysed data on 2,394 apparently healthy men with good baseline cognitive function from the prospective population‐based Kuopio Ischaemic Heart Disease study. We assessed habits of physical activity at baseline using a 12‐month leisure‐time physical activity (LTPA) questionnaire. Using Cox regression, we calculated hazard ratios adjusted for body‐mass index, systolic blood pressure, smoking status, history of type‐2 diabetes, total cholesterol, high‐density lipoprotein cholesterol, alcohol consumption, history of coronary heart disease, and high‐sensitivity C‐reactive protein.
Results
During a median follow‐up of 24.9 years (interquartile range: 18.3‐26.9), 208 men developed dementia and 128 developed AD. Multivariable adjusted hazard ratios for dementia comparing top vs. bottom tertiles of physical activity were 0.97 (95% confidence intervals: 0.69‐1.38) for total physical activity volume, 0.96 (0.69‐1.34) for conditioning LTPA volume, and 1.13 (0.80‐1.61) for total LTPA volume. Corresponding hazard ratios for AD were 1.19 (0.76‐1.85), 0.98 (0.64‐1.49), and 1.22 (0.77‐1.93). Associations were consistent in analyses restricted to participants with ≥10 years of follow‐up.
Conclusions
In middle‐aged Caucasian men, various physical activity exposures were not associated with all‐cause dementia or AD. Future studies should address biases due to reverse causation and regression dilution and should involve objective measures of physical activity.
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Julkaisija
WileyISSN Hae Julkaisufoorumista
0014-2972Asiasanat
Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/42321209
Metadata
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Lisätietoja rahoituksesta
The authors acknowledge the Finnish Foundation for Cardiovascular Research, Helsinki, Finland, for supporting the Kuopio Ischemic Heart Disease risk factor study. S.K.K. acknowledges support from the NIHR Biomedical Research Centre at University Hospitals Bristol NHS Foundation Trust and the University of Bristol. P.W. acknowledges support from the Dr.-Johannes-and HerthaTuba Foundation.Lisenssi
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