After pulling out the track in early June in New York due to worry about leg cramps, Liu was disqualified for a false start a week later in Eugene, Oregon.

"His injuries have been cured and no longer affect his normal training," said Sun, who was suspected by some of playing up Liu's so-called injuries before the Olympics.

"I previously plan a three-stage training program for Liu," Sun said. "But we just don't have enough time to implement all."

Sun said he was satisfied that Liu had gained 90 percent of his peak form.

Liu was rumored not to attend the Olympic opening ceremony on the night of August 8, which ruled him out one candidate for the mysterious last Olympic torch bearer who will light the flame in the main venue.

Sun said Liu, now residing in the Chinese national team's training camp, would move to the Olympic village around mid August.

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