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New IAAF testosterone rules could slow Caster Semenya by up to seven seconds

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• IAAF set to introduce new limits for female athletes
• Sports scientist: ‘She will go from a 1:54 to 2:01-2:03’ in 800m

The Olympic 800m champion Caster Semenya could run up to seven seconds slower under new rules requiring her to lower her natural testosterone levels to race internationally, a prominent sports scientist has predicted.

Under rules due to be announced on Thursday morning by the IAAF, the world athletics governing body, a separate female classification for an athlete with differences of sexual development (or DSDs) will be introduced. Such athletes, including Semenya, will have to reduce and then maintain their testosterone levels to no greater than 5nmol/L by 1 November if they want to compete in events ranging from 400 metres to a mile.

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from The Guardian https://ift.tt/2KdYDtV

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