IAAF steps up doping campaign

The International Association of Athletics Federations, (IAAF) has started out-of-competition testing on athletes who may compete at this year\'s World Championships and will carry out more than 1,000 blood and urine doping controls during the event.



The IAAF said the anti-doping program for the August 15 to 23 championships in Berlin is the most extensive ever conducted by the sport\'s governing body.



The 1,000-plus tests during the championships is a big increase on the 700 controls conducted on track and field athletes at last year\'s Beijing Olympics.



The IAAF will also selectively freeze samples from Berlin for future analysis should new doping products or methods become detectable in the future.



Athletes who are likely to compete in Berlin already have been subjected to hundreds of tests late last year and this year.



The IAAF will also begin implementing biological passports, for blood and urine, to monitor the individual profiles of athletes.



The five nations with the most athletes tested out of competition were Russia, Belarus, China, the United States and Jamaica.