Former marathon world champion Paula Radcliffe has told ITV News "undoubtedly there was really bad corruption" at world athletics' governing body, after the publication of a damning report.
The World Anti-Doping Agency's independent commission found "corruption was embedded" at the International Association of Athletics Federations (IAAF).
"In essence it was a pretty archaic and inept organisation in the way it was functioning", she added.
Radcliffe added that Lord Seb Coe, who is now at the helm of the organisation, "was the right man in charge" in terms of moving forward and restoring the integrity of the sport.
Senior staff at athletics' governing body must have known about doping taking place within the sport, an independent report has found.
A report is expected to reveal there is no way members of world athletics' governing body could have been unaware of the extent of doping.
Sebastian Coe has said he wished he did more to stamp out doping while a vice-president of athletics' governing body.