Name Info Provider Link
Exercise for Children free resource MedlinePlus Health Information https://medlineplus.gov/exerciseforchildren.html
Exercise and Physical Fitness free resource MedlinePlus Consumer Health Information https://medlineplus.gov/exerciseandphysicalfitness.html
subscription/membership/fee required Silverchair Information Systems https://academic.oup.com/biomedgerontology/article-lookup/doi/10.1093/gerona/55.7.b347