Athletics South Africa (ASA) says the International Association of Athletics Federations (IAAF) may have jeopardised Caster Semenya?s track career.

It said the association?s decision to question the gender of South Africa?s star athlete at such an early stage of her career may physiologically affect her.

The results of her gender verification test have yet to be announced.

Athletics SA President Leonard Cheuene said they have tried to put her at ease.

"We're trying very hard to make sure this doesn't get to her. We managed to take her to the medal ceremony."

Semenya won the 800m race at the World Athletics Championships in Berlin this week but her victory was overshadowed by the IAAF questioning her gender.

Semenya is expected to arrive back home on Tuesday.