Increasing physical activity in young primary school children - it's child's play: A cluster randomised controlled trial

► This study focuses on the under-researched group of early primary school children (5-7 year olds). ► We capture children's motivation to play and help adults reconsider value of healthy risk taking. ► Increased physical activity during school breaks, larger than comparable studies, was measured. ► Whether the increases can be maintained remains to be seen; evidence in one school suggests they can.