title: It's never too late to engage in lifestyle activities: significant concurrent but not change relationships between lifestyle activities and cognitive speed.
abstract: Little is known about potential longitudinal relationships between participation in social, physical, and intellectual activities and later cognitive performance. Data from the Victoria Longitudinal Study (n = 530) were used to test whether baseline and change in lifestyle engagement were related to corresponding indicators of cognitive speed (measured by mean-level and intraindividual variability). Regressions based on random effects model estimates showed that cross-sectional activity participation predicted corresponding values of both mean-level and intraindividual variability, but few longitudinal relationships were significant. Overall, a higher frequency of participation in cognitively complex activities was related to faster response times and lower intraindividual variability. Findings suggest that activity level at one point in time may be a more important predictor of cognition than an individual's changes in activity level.
authors: Department of Psychology, University of Victoria, PO Box 3050 STN CSC, Victoria BC V8W 3P5, Canada. abielak@uvic.ca
authors: Allison A M
authors: AA
authors: Bielak
authors: Tiffany F
authors: TF
authors: Hughes
authors: Brent J
authors: BJ
authors: Small
authors: Roger A
authors: RA
authors: Dixon
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000523:psychology*; D003071:Cognition; D005260:Female; D006801:Humans; D008019:Life Style; D008297:Male; D008875:Middle Aged; D011930:Reaction Time; D012919:Social Behavior; D011795:Surveys and Questionnaires