Systematic Review of Pulmonary Function and Cognition in Aging

Emily Clare DugganMSc, Raquel B GrahamMSc, Andrea M PiccininPhD, Natalie D JenkinsMEd, Sean CloustonPhD, Graciela Muniz-TerreraPhD, Scott M HoferPhD and Angela GutchessPhD

The Journals of Gerontology: Series B, 2020, vol. 75, issue 5, 937-952

Abstract: BackgroundSubstantial research is dedicated to understanding the aging-related dynamics among individual differences in level, change, and variation across physical and cognitive abilities. Evaluating replicability and synthesizing findings has been limited by differences in measurements, samples, study design, and statistical analyses that confound between-person differences with within-person changes. Here, we systematically reviewed longitudinal results on the aging-related dynamics linking pulmonary function and cognitive performance.MethodsPreferred Reporting Items for Systematic Review and Meta-Analyses guidelines were used to systematically review longitudinal studies of pulmonary function and cognition.ResultsOnly four studies thoroughly investigating cognitive and pulmonary longitudinal associations (three or more measurement occasions) were identified. Expanded review criteria identified three studies reporting two measurement occasions, and seven studies reporting one measurement of pulmonary function or cognition and two or more measurements of the other. We identified numerous methodological quality and risk for bias issues across studies.ConclusionsDespite documented correlational associations between pulmonary function and cognition, these results show there is very limited research thoroughly investigating their longitudinal associations. This highlights the need for longitudinal data, rigorous methodological design including key covariates, and clear communication of methods and analyses to facilitate replication across an array of samples. We recommend systematic study of outcome measures and covariates, inclusion of multiple measures (e.g., peak expiratory flow, forced expiratory volume in 1 s, and forced vital capacity), as well as application of the same analytic approach across multiple datasets.

Keywords: Cognition; Longitudinal change; Pulmonary; Research methods and issues; Successful aging (search for similar items in EconPapers)
Date: 2020
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