The IAAF has agreed to respect any decision made by the Court of Arbitration for Sport (CAS) over their ruling on hyperandrogenism.

The athletics governing body ruled in April that female athletes' testosterone levels must be within set limits for a continuous period of at least six months in order to compete alongside other women in track events ranging from the 400 metres up to a mile.

Two-time Olympic gold medallist Caster Semenya challenged the rule, the South African appealing to CAS, with a decision still to be made.

Although the IAAF responded at the time, "ready to defend the new regulations", a second statement now says that CAS' "final decision will be respected" after a meeting with Athletics South Africa.

In the same release, IAAF president Sebastian Coe sought to reiterate the reasoning behind a ruling that would affect athletes with differences of sexual development (DSD).

He said: "We need to create competition categories within our sport that ensures that success is determined by talent, dedication and hard work, rather than by other factors that are not considered fair or meaningful, such as the enormous physical advantages that an adult has over a child, or a male athlete has over a female athlete.

"We therefore need to come up with a fair solution for intersex/DSD athletes wishing to compete in the female category.

"[This] is what the new regulations set out to do, based on the evidence the IAAF has gathered about the degree of performance benefit that such intersex/DSD athletes get from their higher levels of circulating testosterone."