Testosterone limit delay

World athletics’s governing body the IAAF has delayed the introduction of a testosterone limit for female athletes until the Court of Arbitration for Sport has heard Caster Semenya’s pending appeal against the rule.

The new limit, which only applies to races from 400m to one mile, was meant to come into force on November 1 and would require athletes to maintain their testosterone levels to below five nanomoles per litre (nmol/L) for at least six months before competing.