Ryan Lochte and Natalie Coughlin ended the USA Short Course National Championships in style with both setting new American records on their way to their fourth and third titles respectively.

Long course world champion Lochte set his second American record of the meet as he stormed to the 200y backstroke title in a time of 1:36.81, shaving almost a second off the time he set in the same pool in 2006. The 23-year-old also took titles in the 200y IM, the 400y IM and the 50y freestyle.

Similar to his perfomances in the 200y and 400y IM, Lochte raced out to an early lead slowly building up a three-body length lead and had the race almost wrapped up by the halfway stage.

"That's what I've been training for, so I'm just glad I had a chance to race," Lochte said. "For the most part I accomplished my goal. After this, I'm off but then I'm going to get pounded [in training] over Christmas."

Coughlin was also completely in control of her race as she touched in nearly a second ahead of the rest of the field on the way to the 100y freestyle title.

The 25-year-old, who had already won the 50y freestyle and 100y backstroke, came home in 46.85s to record her second American record of the meet.

"I had no expectations coming into this meet," Coughlin said. "The first day of this meet, I felt fresh and strong but I was incredibly shocked with my [50y free] time - tonight I took the 'fly and die' approach. I felt like it was important to go out hard but not be forceful, if that makes sense.

"I've been on the road for two-and-a-half weeks now and I'm extremely happy with the way this meet turned out. It was a nice surprise and gives me a lot of confidence heading into next year."

Michael Phelps was the only other swimmer to record multiple wins over the weekend winning the 100y freestyle to add to his 200y freestyle title.

Phelps, who broke a bone in his wrist in October, survived a tough battle with Jason Lezak but just out-touched the National Team swimmer to win in a time of 42.14s.

"I just try to make sure I'm close at the 50," the 22-year-old said. "All these guys have better turns and speed than me in a short course pool so I just try to stay close and bring it home.

"After going through what I went through six weeks ago I can't ask for anything more. It was my best time in the 100 and I was just off my best in other events."

Pippa Davis / Eurosport