Bolt to defend titles in Rio
Usain Bolt has crushed rumours that he will switch to the 400 metres or long jump for the Rio Olympics in 2016.
Bolt, who retained his 100m and 200m crowns at London 2012, had previously suggested he may be willing to switch disciplines.
"Rio is about going and defending my titles," Bolt said. "I don't want to try any different events at Rio, because at Rio I will just defend my titles to show the world that there is a possibility that I can do it again. To do the three-peat, that is the focus."
Meanwhile, Bolt has revealed that his natural gifts are not enough to get by at the highest level.
"It's all about hard work," Bolt said. "When I was doing great when I was young, people used to say I was fast for my age, but I have put a lot of work into since I was a senior athlete.
"I continue to work hard, continue staying focused and pushing myself so for me that's the focus right now to see how fast I can go and I definitely try to go faster each year."