The Chinese cameraman who sent Usain Bolt flying at the World Athletics Championships has presented him with a red bracelet to apologise.

A red-faced Song Tao of China's CCTV placed the good-luck charm on Bolt's wrist by way of apology after he lost control of the electric segway scooter he was riding and ran into the Jamaican from behind.

Bolt, the six-times Olympic champion, escaped serious injury in the accident which happened as he celebrated sealing the world sprint double with an emphatic 200m win on Thursday.