Performance-enhancing substances: What athletes are using
James A. Krcik, MD
Section of Sports Medicine, Department of Orthopaedic Surgery, Cleveland Clinic
Address: James A. Krcik, MD, Cleveland Clinic Strongsville, 16761 South Park Center, Strongsville, OH 44136
Use of performance-enhancing substances is widespread among competitive athletes, whether professional or amateur, adolescent or adult. Some of these substances are legal and beneficial, but others are illegal or have adverse or unproven effects. This article describes the action and effects of these substances, their legality, and their potential for abuse.