|Photo via mariachilly on Flickr|
Technically, this type of competition is known as "sportaerobics" and was created by Sports Fitness International, an athletic marketing firm, in the early 80s as the fitness and aerobics craze was beginning. The first national championship was held in 1984 and became an Olympic sport in 1997. (I was going to say who needs the Olympics when you have aerobics championships, but needless to say it's a moot point.)
They are a gas to watch...enjoy! The opening sequence to the first one is straight out of Olivia Newton-John's "Physical."