Indoor hurdles favourite Dayron Robles has returned to training in Cuba after a disappointing world championships.

Robles was eliminated in the preliminaries when he stopped, thinking there was a false start.

"Robles is more lively, with new energy in training," his coach, Santiago Antunez, told Reuters. "He is looking at a medal at the Olympic Games in Beijing."

Swedish women's world 60 metres hurdles record holder Susanna Kallur expects to be back to full fitness in two weeks.

Kallur, the world indoor favourite, withdrew after injuring a hamstring during warm-ups for the semi-finals.

"I haven't tried to run full out," Kallur told the Swedish daily Expressen, "but I did some jogging and it felt like it (the injury) was holding up."

Reuters