Colorado Experiment

The Colorado Experiment was a bodybuilding experiment run by Arthur Jones using Nautilus equipment at the Colorado State University in May 1973.[1]

Nautilus-inventor Arthur Jones personally trained Casey for every workout. Training was intense, progressive, and involved a negative-only repetition style on 50 percent of the exercises.

It is of interest due to its claims that incredible results can be achieved with a small number of sessions using single sets of high intensity repetitions to momentary muscle failure focusing on negative or lowering multi-joint exercises. The first subject, Casey Viator, gained 63 pounds of muscle in 28 days and the second, Arthur Jones, gained 15 pounds in 22 days.

These claims are considered controversial because it was only performed with two subjects who were not "average," but regaining pre-existing muscle mass.[2]

Results

Casey Viator gained more than 60 Pounds (of muscular mass) in 28 Days and with only 12 (high-intensity) workouts, each of which were less than 30 minutes.[3]

Muscle gains of eight of other subjects:[4]

  1. David Hudlow built 18.5 pounds of muscle in 11 days. Documented in The New High-Intensity Training.
  2. Eddie Mueller built 18.25 pounds of muscle in 10 weeks. Documented in Massive Muscles in 10 Weeks.
  3. Todd Waters built 15.25 pounds of muscle in 6 weeks. Documented in High-Intensity Strength Training.
  4. Jeff Turner built 18.25 pounds of muscle in 4 weeks. Documented in GROW.
  5. Keith Whitley built 29 pounds of muscle in 6 weeks. Documented in Bigger Muscles in 42 Days.
  6. David Hammond built 22.5 pounds of muscle in 6 weeks. Documented in Bigger Muscle in 42 Days.
  7. Joe Walker added 17.38 pounds of muscle in 6 weeks. Documented in The Body Fat Breakthrough.
  8. Shane Poole built 19.34 pounds of muscle in 6 weeks. Documented in The Body Fat Breakthrough.

See also

References
  1. http://baye.com/colorado-experiment/
  2. "Archived copy". Archived from the original on 2008-09-15. Retrieved 2008-08-25.CS1 maint: archived copy as title (link)
  3. "Gain 25 Pounds In 21 Days!". Bodybuilding.com. 2003-07-01. Retrieved 2020-11-17.
  4. Nation, Ellington Darden PhD, T. "The Colorado Experiment: Fact or Fiction". T NATION. Retrieved 2020-11-17.
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