Genadijus Sokolovas, Ph.D., also known by his popular nickname in America as Dr G , is considered by many to be one of the world’s most accomplished sports physiologists. He is currently assisting world-class triathletes , pentathletes and pool and open water swimmers at the USA Olympic Training Center in Colorado Springs, Colorado and created the Vertical Swim Trainer , one of the 2014 WOWSA Awards ‘ World Open Water Swimming Offering of the Year .