Caster Semenya shrugged off the unfavourable Court of Arbitration for Sport (CAS) ruling when she won the Women's 800m race at the IAAF Diamond League race in Doha. Semenya, the double Olympic champion at the distance, was added to the 800m start list, two days after her appeal against a new rule regulating testosterone levels for women athletes was rejected by the Court for Arbitration of Sport (CAS). Semenya had challenged the measures, introduced by the International Association of Athletics Federations (IAAF), that will force women with higher than normal male hormone levels -- so-called "hyper-andro-genic" athletes -- to artificially lower the amount of testosterone in their bodies if they are to continue competing. The rules will come into effect on May 8 and will apply to races over distances of 400m to the mile. For more Elvis Presslin spoke to the Chairperson of the South African Medical Association, Dr Angelique Coetzee