Bolt back on track for Korea return

Usain Bolt, the fastest man in the world, has resumed training after his outdoor season was cut short by injury.

"Training has started and the good news is that I am 100 per cent healthy and am completely over my back and Achilles problems from the summer," wrote the triple Olympic champion and double world record holder on his IAAF online diary. "I am really enjoying training at the moment. For the first time in my career I was looking forward to getting back into training before my end-of-season break was over.

"I am looking forward to defending my 100 and 200 metres titles at the 2011 World Championships in Korea and so I know the importance of putting in the work required. Coach Glen Mills is also aware of that... he is putting on the pressure from early, but so far so good."

The 24-year-old cut short his season on 10 August, four days after losing to Tyson Gay over 100m in Stockholm, the first defeat he had suffered for two years. He missed the Diamond League meetings in Zurich and Brussels.