IAAF World Championships 200m defending champion Usain Bolt was back at work in the gym yesterday as he continued preparation for the biennial event set for Moscow, Russia, in August.

Three days after winning the men’s 100m title in a seemingly effortless 9.94 seconds on the second evening of the JAAA/Supreme Ventures National Senior Championships at the National Stadium, Bolt was back at work yesterday morning, as he had promised in post-race interviews Friday night.

Pace Management, Bolt’s management company headed by Ricky Simms, posted a video on the social network Twitter yesterday showing the six-time Olympic gold medallist lifting weights at a Kingston gym.

Bolt had told reporters after Friday’s race that he had some more work to do to get back in top shape. “I have a lot of things to work on; my start, my drive phase needs a lot of work I am not getting the power that I want; I probably need to get back in the gym and do some core work and then everything will come together,” he said then.

Bolt, who had won the sprint double at the IAAF World Championships in Berlin in 2009, before his sensational disqualification in the 100m two years later in Daegu, South Korea, skipped the 200m last week as he had a bye as the defending champion.

Bolt’s training partner and Olympic bronze medallist Warren Weir won the 200m on Sunday in a new personal best 19.79 seconds. This tied Bolt’s season best and is second in the world to American Tyson Gay, who ran 19.74 seconds earlier Sunday to complete the sprint double at the US Trials in Des Moine, Iowa.

On Sunday it was announced that Bolt and his Racers teammates had withdrawn from a meet in Ostrava, Czech Republic, set for Thursday to allow for more training here in Jamaica.

“I want to apologise to my fans in Ostrava, but this year I will not be coming to the Golden Spikes meeting. Instead, I will stay in Jamaica with my coach for an extra week to focus on training before coming to Europe,” said a statement from Bolt.

Earlier on Friday, Gay had won the US Trial men’s 100m in a world-leading 9.75 seconds and after suggestions that the American, who also ran 9.86 seconds at the Jamaica International Invitational in May, was setting the standard in the 100m so far, Bolt responded by saying: “I have run 9.63 seconds and 9.58 seconds, so I have set the standard already.”