Adam Peaty beats own 100m breaststroke record in Olympic heats – video

British swimmer Adam Peaty beats his own 100m breaststroke record in the Olympic swimming heats in Rio on Saturday. Peaty is now into the semi-finals with a time of 57.55sec, inside his former best of 57.92 set in April last year and more than a second quicker than his nearest pursuer in the competition

• Adam Peaty sets world record in 100m breaststroke heat at Rio 2016