Highlights • This umbrella review included six systematic reviews of lower quality.• A small positive impact of organized sport activities on youth mental health was found.• Only two systematic reviews… Click to show full abstract
Highlights • This umbrella review included six systematic reviews of lower quality.• A small positive impact of organized sport activities on youth mental health was found.• Only two systematic reviews that studied organized non-sport activities could be included.• Mixed results were found for impact of organized non-sport activities on youth mental health.• Mediation or confounding through physical activity needs further study.
               
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