
A total of 1,742 athletes competed in the World Championships in Daegu from 199 countries
More than 30% of athletes competing at the 2011 World Championships admitted to using banned substances during their careers, according to a World Anti-Doping Agency-commissioned study.
The figure was even higher, at 45%, when athletes at the 2011 Pan-Arab Games were asked the same question.
More than 5,000 athletes competed at the events and 2,167 were asked if they had taken banned drugs.
« The true prevalence of doping remains unknown, » the researchers said.
Just 0.5% of doping tests at the 2011 Worlds in Daegu, South Korea – where every athlete was tested – were positive.
In Qatar for the Pan-Arab Games, the figure rose to 3.6%.
« The study shows that biological tests of blood and urine reveal only a fraction of doping cases, » said Harvard medical professor Harrison Pope.
« This is likely due to the fact that athletes have found numerous ways not to be caught during tests. »
Par: Patrick Hangue
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