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Lance Armstrong: Doping in sports

Published On: Jul 13 2011 02:23:19 PM CDT   Updated On: Jan 18 2013 09:40:26 AM CST

Lance Armstrong confessed to doping to win the Tour de France during an interview with Oprah Winfrey on Thursday. In sports, doping refers to the use of performance-enhancing drugs and substances taken to mask performance-enhancing drugs in test. Particual types of drugs are banned by sports organizations. Click to find out more.