Home > News Segments > HGH Improves Athletic Performance Get the Flash Player to see this player. Rate: (Click the stars to rate) Published on May 04, 2010 by IMReport, Views: 1208 study released today in Annals of Internal Medicine, the flagship journal of the American College of Physicians (ACP), finds that human growth hormone (HGH) improves sprint capacity in healthy recreational athletes. This is the first trial to demonstrate that HGH improves athletic performance.