This is known as doping many performance enhancing drugs are banned by sports governing bodies there are 5 doping classes which are categories of banned drugs beta blockers are banned in. In competitive sports doping is the use of banned athletic performance enhancing drugs by athletic competitors the term doping is widely used by organizations that regulate sporting competitions the use of drugs to enhance performance is considered unethical and therefore prohibited by most international sports organizations including the international olympic committee. Doping means athletes taking illegal substances to improve their performances there are five classes of banned drugs the most common of which are stimulants and hormones there are health risks. In the us drug testing may occur in olympic level sports national collegiate athletic association sports ncaa and professional sports the us anti doping agency usada is the national anti doping organization for the olympic movement in the united states