title: Early-life socioeconomic status and physical activity in later life: evidence from structural equation models.
abstract: OBJECTIVE
  This study examines the association between early-life socioeconomic status (SES) at age 18 and physical activity (PA) at age 65, elucidates mechanisms explaining this association, and explores gender differences in mediating pathways.
  
  
  METHODS
  Multigroup structural equation modeling is applied to the 1957 to 2004 data from the Wisconsin Longitudinal Study (WLS).
  
  
  RESULTS
  Early-life SES is positively associated with exercise in later life. This association is mediated by socioeconomic resources, health problems, obesity, and depressive symptoms (women only) in 1993 and sports participation in 1957. All mediators explain over 95% of the effect of early-life SES.
  
  
  CONCLUSIONS
  This study emphasizes the importance of complex multiple pathways linking early family SES to later-life PA. We identify chains of risks that need to be broken to improve PA among older adults. Our findings also suggest that interventions aimed at maintaining optimal physical functioning in old age should begin at least at midlife.
authors.affiliation: Department of Sociology & Crime, Law and Justice, Population Research Institute, The Pennsylvania State University, State College, PA 16802, USA. tup3@psu.edu
authors.forename: Tetyana
authors.initials: T
authors.lastname: Pudrovska
authors.forename: Andriy
authors.initials: A
authors.lastname: Anishkin
mesh_terms: D000293:Adolescent; D000368:Aged; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D015233:Models, Statistical; D009043:Motor Activity; D012923:Social Class; D014922:Wisconsin