The International Association of Athletics Federation has rubbished recent allegations of widespread doping in the sport saying they are “sensationalist and confusing”.
German broadcaster ARD and British newspaper the Sunday Times obtained access to leaked IAAF data on 12 000 blood test for 5000 athletes between 2001 and 2012.
The data reportedly reveals 800 athletes – and a third of all medallists in endurance events at recent Olympics and World Championships – had produced suspicious blood test results.
The governing body for World Athletics says the results referred to in the reports were not positive tests or proof of doping.
The IAAF also strongly rejects the allegation it did not appropriately follow up suspicious profiles.