Long, the United States' second most-decorated Paralympian with 23 medals, said the advert perfectly captured her life in just 60 seconds.

The 28-year-old Russian-born American said she was "emotional" watching the commercial by Toyota, an Olympic and Paralympic sponsor.

It told the story of her adoption from an orphanage in Siberia and how she became one of the greatest American swimmers of all time.

"It’s such an emotional spot," Long said. 

"It’s so raw. 

"The way Toyota was able to capture all of that, it brings all of these emotions out that I kind of forgot about."

Long added: "I didn’t start out the sport thinking that I was going to win gold medals or to be in a Super Bowl commercial. 

"I started this sport because I truly loved the water. 

"It was a place that I felt really free."

The advert was watched by millions who had tuned in to the coverage of the Super Bowl, won by the Tampa Bay Buccaneers after they beat the Kansas City Chiefs 31-9.

"It’s one of my top three moments," said Long on featuring in the commercial.

"I would say winning a gold medal is extraordinary because nobody can take it away from you. 

"There are moments like when I was training with the greatest Olympian of all-time, Michael (Phelps), who called me J.Lo, that was very special and then being in the Super Bowl. 

"It’s just so cool."