«Diamond League Final: Francine Niyonsaba says 'I'm back to make sport better'». BBC Sport (på engelsk). 7. september 2021. Besøkt 13. juli 2024. «Burundi's Niyonsaba, 28, is one of several athletes banned from competing between 400m and 1500m because of naturally high levels of testosterone. [---] Niyonsaba is one of a clutch of athletes who have been forced to change events by a 2019 ruling by governing body World Athletics. South Africa's multiple world and Olympic 800m champion Caster Semenya failed to qualify for this summer's Olympics after her own switch to longer distance, while Namibian teenager Christine Mboma won silver over 200m in Tokyo after being forced to step down from her preferred 400m with just a few weeks notice.»
