Frederick C. Hatfield (October 21, 1942 – May 14, 2017), nicknamed Dr. Squat, was an American world champion powerlifter and PhD holder in sports sciences.
Upon graduating, Hatfield earned his Bachelor of Science degree in health, physical education and recreation.
[4] He then attended the University of Illinois at Urbana-Champaign, where he earned his Master's degree in the social sciences of sport.
[7] His best-selling seminal work Bodybuilding:A Scientific Approach set the standard for many fitness books today.
[8] He trained hundreds of professional athletes including Mr. Olympia winner Lee Haney, Evander Holyfield, and Lyle Alzado.