Adolescent IQ and perfornce-based measures of physical function in old age: a 54-year longitudinal study

Yannick Stephan, Angelina R Sutin, Rtina Luchetti and Antonio Terracciano

The Journals of Gerontology: Series B, 2025, vol. 80, issue 10, gbaf150.

Abstract: ObjectivesEarly-life intellectual quotient (IQ) is a recognized predictor of overall health in late life. Building on this evidence, the present study examined the association between IQ in adolescence and perfornce-based measures of physical function in old age and tested potential mediators of this association.MethodsParticipants (N = 5,750) were from the Wisconsin Longitudinal Study. Measures of IQ and socioeconomic status were obtained in 1957 at about age 18, and measures of peak expiratory flow (PEF), grip strength, chair stand, and gait speed were collected in 2011 at about age 72. Potential mediators (education, adult cognition, disease burden, smoking, and physical activity) were obtained in 2003–2005.ResultsLinear regression analysis indicated that higher adolescent IQ was associated with stronger PEF, stronger grip strength, better chair stand perfornce, faster gait speed, higher physical function composite score, and fewer deficits across doins in old age, controlling for demographic factors. Logistic regression further indicated that higher IQ in adolescence was related to a lower likelihood of PEF less than 80% of predicted value (OR = 0.83, 95% CI = 0.79, 0.88, p

Keywords: Cognition; Peak expiratory Flow; Strength; Gait speed (search for similar items in EconPapers)
Date: 2025
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