10 July 2011 Last updated at 17:58

Katherine Grainger and Anna Watkins upbeat for Worlds

Katherine Grainger and Anna Watkins tell BBC Sport's Martin Cross they are confident that, with more training, they can improve on their victory in the World Cup regatta in Lucerne by the time of the World Championships in Slovenia at the start of September.

Watkins has missed much of the season so far with a back injury.

Watch highlights from the World Cup event in Lucerne on BBC iPlayer