Cycling is often claimed to be the sport that most thoroughly or frequently sees athletes tested for performance enhancing substances, but
statistics recently released by the United States Anti-Doping Agency (USADA) show that's not the case, in the USA at least.
USADA conducted 1,866 tests in the first quarter of 2004, of which by far the largest number - just over 23 percent - were in the sports of track and
field athletics. Cycling ranked fifth with seven percent of tests.
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