South African athlete Caster Semenya.
JOHANNESBURG - The Athletics South Africa (ASA) will appeal the Court of Arbitration for Sports' (CAS) decision to limit naturally-occurring testosterone levels in athletes with differences in sexual development (DSDs).
The IAAF wants female athletes with high testosterone levels to take testosterone blockers.
The rule applies to female athletes running between 400 metres and a mile.
The WMA had questioned the ethical validity of the new rules.