ANGERS, France (AP) -- Two-time Olympic gold medalist Yannick Agnel has set a short course world record in the 400-meter freestyle at the French swimming championships.

The Frenchman finished in 3 minutes, 32.25 seconds at the nationals in Angers on Thursday, beating German swimmer Paul Biedermann's previous mark of 3:32.77, which was set in 2009 with a high-tech bodysuit.

"It's super. I've beaten a record set in a bodysuit," Agnel said. "It shows there are still many good things to be done in terms of times."

The 20-year-old Agnel won the Olympic gold medal in the 200 freestyle and the 4x100 freestyle relay in London, as well as silver in the 4x200 freestyle relay.

Agnel shaved a massive 7.66 seconds off his previous best mark of 3:39.91 from 2010.

SI Apps
We've Got Apps Too
Get expert analysis, unrivaled access, and the award-winning storytelling only SI can provide - from Peter King, Tom Verducci, Lee Jenkins, Seth Davis, and more - delivered straight to you, along with up-to-the-minute news and live scores.