Abstract
Background
Cognitive activity in early and late life has been associated with increased cognitive function among older adults. There is less evidence on the effects of midlife cognitive activity.
Aims
We examined the association of midlife cognitive activity with cognitive function after age 65.
Methods
We studied 78 men 68 years old or older. We asked participants to assess their current and midlife cognitive activity using adaptations of a measure created by Wilson et al., which includes reading, writing letters, visiting museums and other leisure activities. Our outcomes were validated measures of cognitive and overall function. We compared midlife cognitive activity to our outcome measures in simple bivariable analyses, then adjusted for demographic characteristics using linear regression.
Results
Our study population of older (mean age 74.8 years) men was primarily white (87%) and well-educated; 65% had at least some post high school education. Although 67% were retired, household income was high (24% < $30 k and 44% > $50 k). More midlife cognitive activity was related to more current cognitive activity (p = < .0001, r2 = 0.55339). However, midlife activity was not associated with measures of cognitive or overall function, adjusted analyses gave similar results.
Discussion
We did not find an association between midlife cognitive activity and later life function. However, the Wilson measure of cognitive activity that we used excludes instrumental cognitive activities such as dealing with finances or healthcare, likely underestimating cognitive activity for many participants.
Conclusion
Midlife cognitive activity was associated with late-life cognitive activity, suggesting efforts to increase late-life cognitive activity may need to start earlier in life. However, more robust measures of everyday cognitive activity might detect such an association.
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Data availability
Deidentified dataset available on request.
Code availability
Available on request.
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Acknowledgements
We acknowledge the administrative support of Deborah Dye. We acknowledge the use of space and equipment provided by the Clement J Zablocki VA Medical Center. We especially acknowledge the contribution of the Veterans who participated in this study.
Funding
‘This work was supported by the National Institute on Aging of the National Institutes of Health under (Award Number T35AG02979) and by the National Center for Advancing Translational Sciences, National Institutes of Health, (Award Number 2UL1TR001436). The content is solely the responsibility of the author(s) and does not necessarily represent the official views of the NIH.
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We have no known conflict of interest or competing interests.
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This study was approved by the Subcommittee on Human Studies of the Clement J Zablocki VA Medical Center’s Research and Development Committee. This is the Institutional Review Board for this facility. The study ID is 9392-26.
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All study participants provided written informed consent prior to any study procedures.
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Cotter, A., Kim, J., Semons-Booker, K. et al. Influence of mid-life cognitive activity on cognitive function among men aged 68 years or older. Aging Clin Exp Res 33, 2689–2694 (2021). https://doi.org/10.1007/s40520-021-01825-y
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DOI: https://doi.org/10.1007/s40520-021-01825-y