This study examines the effects of parental attitudes on children's physical activity. A measure of parental attitude (their sport participation when being young) that is independent of the child's behaviour is needed. Using data from the sixth wave of the Taking Part Survey (n =14,002 adults and n =1116 children), a matching estimator analysis is conducted. The results reveal that there are substantial intergenerational transfers of behaviours, in particular for male adults and male children. Furthermore, while an effect is observed for female adults and male children, female children's sport participation is only marginally influenced by female adult's physical activity when growing up. The results imply that promoting sport to the younger generation seems to be a fruitful strategy in creating a sporting habit and promoting sport participation when being older. However, there are challenges to be overcome in promoting female participation.