IAAF says doping allegations are sensationalist and confusing
The International Association of Athletics Federation (IAAF) says allegations of widespread doping in athletics are sensationalist and confusing.
The Sunday Times published data from 5,000 athletes, which it says reveals an extraordinary extent of cheating.
The IAAF, whose data was leaked, stressed the results referred to were not positive tests or proof of doping.
The world governing body also rejected the suggestion it had done nothing to act upon data showing suspicious results.
The Sunday Times and German broadcaster ARD/WDR obtained access to the results of 12,000 blood tests between 2001 and 2012.
The IAAF says any reporting by the ARD and Sunday Times which suggest the IAAF was negligent in addressing or following up on the suspicious profiles is simply false.
The IAAF says it has used every means available within its anti-doping framework in an attempt to catch and sanction the cheats in the sport.