Olympic champion Usain Bolt believes he is getting back to his best after the Jamaican trials gave him a confidence-boost in the build-up to next month's world championships in Moscow.

The world record holder won the 100m at last month's trials to secure his place at the worlds, having been given a wild-card entry into the 200 by Jamaica as defending champion.

"The trials helped me to get a lot of runs, to define where I should be," Bolt said ahead of Saturday's Paris Diamond League event, where he will run the 200m. And after the trials, I felt more confident. It felt great to run and actually accelerate at the end."