Review question / Objective: The purpose of this meta-analysis was to evaluate the efficacy of different physical activity interventions and to determine which physical activity interventions are most effective for children with autism spectrum disorder. Condition being studied: Autism is a set of heterogeneous neurodevelopmental conditions, characterized by early-onset difficulties in social communication and unusually restricted, repetitive behavior and interests. Autism affects more male than female individuals, and comorbidity is common (>70% have concurrent conditions). Exercise has increasingly emerged as one of the promising compensation methods that can positively affect autistic symptoms. The positive effects of various physical activity interventions have been reported, but it is unclear which interventions are most effective at improving symptoms of autism.