Lord Moynihan: Chinese swimming star Ye Shiwen 'is clean'
31 July 2012 Last updated at 11:25 BST
Chinese gold medallist swimmer Ye Shiwen, 16, has denied taking drugs to enhance her performance, saying there was "no problem with doping".
A US coach earlier said her record-breaking performance in Saturday's 400m individual medley was "disturbing".
But British Olympics chief Lord Moynihan said she was "clean" and "deserves recognition for her talent".