The relative contributions of psychological, social, and environmental variables to explain participation in walking, moderate-, and vigorous-intensity leisure-time physical activity

Abstract

Introduction:This study assessed the relative contributions of psychological, social, and environmental variables to walking, moderate- and vigorous-intensity physical activity.Methods:A questionnaire was mailed to a random sample (57% response rate). Analyses used a backwards elimination logistic regression model, removing and replacing individual variables, and adjusting for age, gender, household composition, and education (N = 1827).Results:The sociodemographic and correlate variables collectively accounted for 43% of the variation in total activity, 26% of walking, 22% of moderate-intensity activity and 45% of vigorous-intensity activity (Nagelkerke R2). Individually, the correlates acc..