Usain Bolt ready to strike after fitness scare

By his own charismatic admission, Usain Bolt is a living legend.

But if the Jamaican sprint king pulls off only part of his stated goals in Rio de Janeiro, a whole new vocabulary of superlatives will be required.

Arguably the greatest sprinter in history, Bolt already owns the world records for the 100 meters and 200m.

In London four years ago, he completed an unprecedented "Double Triple" by retaining the 100m, 200m and 4x100m crowns won four years earlier in Beijing.

"I am now a living legend," Bolt informed reporters imperiously. "Bask in my glory."

In Rio, Bolt is targeting all three titles once again, a "Triple Triple" ,as well as a new 200m record of under 19 seconds which he insists is achievable.

"My biggest dream at the Olympics is to win three gold medals again. That's my focus, that's what I want," Bolt said in an interview earlier this year.

"That's the main aim. Everyone wants me to win again, but what they really want to see is records. One of the big records I want is the 200. What I want is sub-19, the first man to ever have done it, it would be a game-changer."

It would take an almost superhuman performance from Bolt to become the first man to break the 19-second barrier and it remains the longest of long shots for a man whose fastest time this year is the 19.89 seconds he ran during the London Diamond League meeting on July 22.

Bolt's assured victory in that race prompted a collective sigh of relief across the athletics world as he demonstrated his fitness after limping out of Jamaica's Olympic trials weeks earlier with a hamstring injury.

For his many fans, Bolt is a beacon of integrity in a sport scarred by doping scandals.

At the World Championships in Beijing last year, his 100m showdown with Justin Gatlin, twice convicted of doping offences, was framed as a battle of "good versus evil."

Bolt won that race but will face a renewed challenge in Rio from Gatlin, the fastest man in the world over 100m this year.

His rivalry with Gatlin has been given an added edge following remarks by the American relating to Bolt's withdrawal from the Olympic trials.