Simone Biles continued her victorious return to major gymnastics competition by sweeping all five gold medals at the US National Championships in Boston.

Biles wore a teal-coloured leotard at the event, to show solidary with former team members who were sexually abused by the former US team doctor Larry Nassar.

Biles is one of over 100 women who have stated publicly that they were victims of abuse by Nassar, who was sentenced to 60 years in prison last December.

The 21-year-old, who won four gold medals at the 2016 Rio Olympics, took the all-around title by 6.55 points over reigning world champion Morgan Hurd, adding to the four available individual crowns.

Biles spent over a year away from the sport in the wake of her success in Rio, returning at the US Classic last month. She has indicated her desire to retire after defending her titles at Tokyo 2020.

"[The colour] is for the survivors," Biles told ESPN after the event.

"I stand with all of them, and I think it's kind of special to unite."

Victory made Biles the first woman to win all available Nationals gold medals since 1994, and also the first non-teenager to win the US all-around title since 1971.