Modifying Effects of Sex, Age, and Education on 22-Year Trajectory of Leisure-Time Physical Activity in a Canadian Cohort

We investigated the population trajectory of leisure time physical activity (LTPA) in adults age 18 to 60 y (n = 881), who were recruited in 1981 for the Canada Fitness Survey and followed-up through the Campbell's Survey on Well-Being (1988) and the Physical Activity Longitudinal Study (2002/04).Data on involvement in LTPA were collected by questionnaire and used to estimate average daily energy expenditure (EE) (kcal . kg-1 . d-1) during...