Name Info Provider Link
subscription/membership/fee required S. Karger AG, Basel, Switzerland https://doi.org/10.1159/000180050
Exercise and Physical Fitness free resource MedlinePlus Health Information https://medlineplus.gov/exerciseandphysicalfitness.html
Exercise and Physical Fitness free resource MedlinePlus Consumer Health Information https://medlineplus.gov/exerciseandphysicalfitness.html