Usain Bolt - file

BEIJING, China (CMC):

Jamaican Olympic hero, Usain Bolt, is not surprised by the number of raised eyebrows following his performances at the Beijing Olympics, but said he has nothing to worry about because he is clean.

Bolt turned the Olympics upside down with his three gallant performances, win-ning gold in the 100 metres and 200 metres in world-record times. He ran the third leg of the sprint relay as Jamaica also captured gold in world-record time.

Bolt said he had been tested numerous times this season with all the results returning negative.

Tested four times

"We've been tested a lot. I was tested four times before I even started running," Bolt said, while speaking at an event put on by his sponsor Puma.

"I have taken urine tests and blood tests. I have been tested after every com-petition," he added.

He continued: "I have been tested so many times I lost track. And we're okay with it. We work hard and we perform well and we know we're clean. Anytime they want to test us is okay with us."

Bolt took the Olympics by storm, speeding to 9.69 seconds in winning the 100 metres before returning to clock a sensational 19.30 seconds to break American Michael Johnson's 12-year-old 200m record and become the first double Olympic sprint champion in 24 years.