Ervin, a former Cal swimmer, trained with the Cal women's team late last year.
Both swimmers, training partners at the Australian Institute of Sport in Canberra, played down suggestions that the result would give Popov a psychological advantage going into the Sydney Games.
The Olympic-size pool attracts swimmers training for a triathlon, and on Tuesday evenings there are free front crawl lessons open to everyone.
Gordon eventually earned a doctorate in biomechanics from Indiana University, while continuing to coach tennis, he said, and, for a time, working with swimmers training for the Olympic team in Colorado Springs, photographing their strokes and kicks with underwater cameras.
We've been seeing the benefits of our world-class swimmers training at the five British Gas Intensive Training Centres (ITCs) which have been set up around the country over the past two years as well as the eight funded club programmes.
The classic swimmers' training regimen makes most other sports look sluggish; by the time the most serious racers enter high school, they are already deep into a year-round, twice-a-day routine that can begin long before sunrise and end after dusk.
The sport has joined the technological tide in recent years, and now Avidasports, a small start-up technology firm in Harper Woods, Mich., hopes to modernize swimmers' training regimens through the use of wireless sensors that enable coaches to collect performance data in real time.
"I don't think that's going to affect any of the swimmers training there," she told BBC Radio Wales Sport.
Swimmers training in the water two times per day can easily reach total calorie needs of 4000 5000 kcal/day, despite their highly efficient stroke techniques [10].
