NEW YORK, July 28: Human Rights Watch has accused the International Association of Athletics Federations (IAAF) of discriminating against female athletes after implementing a rule prohibiting women with a high testosterone level from competing.

A scientific paper published Monday found that women who produce higher-than-normal amounts of testosterone have up to a 4.5 percent advantage over their competition on the track, evidence the sport's governing body will use to potentially sideline Olympic gold medalist Caster Semenya and others with so-called intersex conditions.