The impact of an after-school physical activity program on health-related fitness of mother/daughter pairs: CASPIAN study

► We examined the effect of after school exercise on mother/daughter pairs. ► We compared the outcomes in mother/daughter group versus student only group. ► The 12-week physical exercise improved health-related fitness in both groups. ► The students in mother/daughter group achieved better than student only group. ► Family support contributes to efficacy of health related interventions in youth.