Mansfield pool where Adlington learned to swim
29 July 2012 Last updated at 08:49 BST
At the Mansfield pool that Olympic champion Rebecca Adlington learnt to swim children are training hard to match her ability.
Adlington begins her defence of the two gold medals she won in Beijing four years ago with heats for the 400m freestyle on Sunday morning ahead of the final in the evening.
Coach Gail Stockton told the BBC's Jenny Hill that to become a swimming champion requires a "lot of hard work and a belief that you can do it".