Physical Activity and Cognitive Development in Children

1. Compare physical activity and cognitive functions between children having cardiac surgery with an age-matched group of children undergoing non-cardiac surgery, as well as otherwise healthy siblings or best buddies (or age and gender-matched children if no siblings or best buddies available) before surgery and after surgery or six months following initial assessment. 2. Determine the effects of a structured physical activity program for 6 months following surgery on cognitive functions and adaptive behavior in children following congenital cardiac surgery. 3. Determine the effects of a structured physical activity program for 12 months following surgery on cognitive functions and adaptive behavior in children following congenital cardiac surgery. 4. We will perform exploratory analysis to determine whether any effects of a 12-months structured physical activity program on cognitive functions and adaptive behavior persist beyond 12 months after cessation of the program.