Kenyan athlete slams new testosterone rule

Another Olympic medallist has criticised the IAAF's testosterone regulations and is refusing to take hormone-reducing medication.

Margaret Wambui of Kenya, who won bronze in the 800-metres behind Caster Semenya at the 2016 Rio Olympics, says she is affected by the new rules but won't take "any type of medication" to lower her natural testosterone.

She calls it "wrong" for the IAAF to ask athletes to alter "our natural body function."

Semenya, a two-time Olympic 800m champion, lost her case against the IAAF, allowing track's governing body to implement testosterone limits in races from 400m to 1500m.

Wambui says she is considering switching to the 100m and 200m events, distances not affected by the rules.

Semenya also says she won't take medication and has entered a 3000m race in the United States next month.