Paula Radcliffe has been elected IAAF athletes' commission vice-chairwoman.
Radcliffe, 42, has been a powerful voice in the fight against doping. Her appointment comes six weeks after a World Anti Doping Agency report said the IAAF "could not have been unaware" of the extent of doping in athletics.
Slovenian high jumper Rozle Prezelj succeeds Frank Fredericks as chairman.
IAAF president Lord Coe said: "They lead the commission at a crucial time for athletics' future."