World 10,000m champion Tirunesh Dibaba says she expects to run both the 10,000 and 5,000m events in Beijing, hoping to become the first woman to scoop the Olympic distance double.

In 2005 Dibaba became the first woman to win both races at a World Championships.

She retained the 10,000m title in Osaka last year after suffering from abdominal pain mid-race but skipped the 5,000m days later.