ROME: Michael Phelps welcomed proposed changes to swimsuit rules after performance-boosting costumes propelled a tidal wave of records on Sunday at the World Swimming Championships.

The 14-time Olympic champion said a single type of suit would bring the sport back to basics and remove the upheaval new bodysuits using polyurethane have brought to swimming.

"Swimming will actually become swimming again. We're all going to have the same exact suit. It's not going be an issue," Phelps told a news conference after his US team won the 4x100m freestyle relay.