| http://www.w3.org/ns/prov#value | - Cognitive functioning was tested at phase 5, when respondents were 46-68 years old.RESULTS: In both prospective (odds ratio [OR] = 1.65; 95% confidence interval [CI]=1.30, 2.10) and cross-sectional (OR=1.79; 95% CI=1.38, 2.32) analyses, low levels of physical activity were a risk factor for poor performance on a measure of fluid intelligence.
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