South Africa’s Caster Semenya a two-time Olympic 800m champion, could be impacted by new rules around testosterone levels in female runners as she set a national record claiming victory in the women’s 1500m at the first Diamond League event of the season.

The 27-year- old, who won gold in the discipline at April’s Commonwealth Games, posted three minutes 59.92 seconds in Doha.

The 27-year-old, who is a two-time Olympic 800m champion, could be impacted by new rules around testosterone levels in female runners.

When asked about the ruling, Semenya said: “I don’t talk about nonsense.”

Athletics South Africa said on Thursday it would challenge the International Association of Athletics Federations (IAAF) on the new rules.

IAAF chief Lord Coe has since said that the rules, which will affect track events from 400m up to the mile, are “appropriate for the sport”.

“I wanted to go faster, but had to slow down a little,” Semenya added.

“It’s always been a dream to set the national record and continue to push beyond my personal best. I think we definitely achieved what we came here for.”

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