US camp helped Su make great strides

Overseas training camps have helped boost the confidence of Chinese sprinters when they race against the world's elite.

Su Bingtian, a 100m specialist, said he used to be intimidated by the aggression of foreign runners at the starting blocks during international meets.

"It felt like I was defeated before the race had even started," the 25-year-old said at the IAAF world championships in Beijing.