The Colorado Experiment was a bodybuilding experiment run by Arthur Jones using Nautilus equipment at the Colorado State University in May 1973. [1]
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]
After stopping exercise for more than two years, 1970 Mr America, Viator was invited by Arthur Jones (inventor of the Nautilus machines) to participate in what was to be known as the Colorado Experiment. The primary purpose was to prove or disprove the efficacy of pure Nautilus training in developing a champion physique. This study was performed at a time where the vast majority of amateur and professional bodybuilders developed their physiques through traditional workouts involving the use of barbells, dumbbells, and cable equipment. The results concluded that Viator gained more than 60 pounds (of muscular mass) in 28 days with only 12 (high-intensity) workouts, each of which were less than 30 minutes. [3] Viator actually gained 45 lbs., but Jones conjectured that he lost 18 lbs. of fat, giving him a net lean gain of 63 lbs. In fact, he most likely gained fat, as Mike Mentzer later claimed Viator was "literally force-fed." [4] By comparison, the typical amount of muscle gain (not fat) in an average person is 5–10 lb per year.
Muscle gains of eight of other subjects: [5]
Bodybuilding is the practice of progressive resistance exercise to build, control, and develop one's muscles via hypertrophy. An individual who engages in this activity is referred to as a bodybuilder. It is primarily undertaken for aesthetic purposes over functional ones, distinguishing it from similar activities such as powerlifting and calisthenics.
Mike Mentzer was an American IFBB professional bodybuilder, businessman and author.
Dorian Andrew Mientjez Yates is an English retired professional bodybuilder. He won the Mr. Olympia title six consecutive times from 1992 to 1997 and has the fifth-highest number of Mr. Olympia wins in history, ranking behind Ronnie Coleman (8), Lee Haney (8), Arnold Schwarzenegger (7), and Phil Heath (7). He is widely considered to be one of the top pro bodybuilders in history, and was well known for his high intensity training, top-level conditioning, and his wide, thick back.
Sergio Oliva, often known by his epithet The Myth, was a Cuban-American bodybuilder. He won the Mr. Olympia title three times.
High-intensity training (HIT) is a form of strength training popularized in the 1970s by Arthur Jones, the founder of Nautilus. The training focuses on performing quality weight training repetitions to the point of momentary muscular failure. The training takes into account the number of repetitions, the amount of weight, and the amount of time the muscle is exposed to tension in order to maximize the amount of muscle fiber recruitment.
David Draper was an American bodybuilder, actor and author.
Frank Zane is a retired American professional bodybuilder and author. He is a three-time Mr. Olympia, and his physique is considered one of the greatest in the history of bodybuilding due to his meticulous focus on symmetry and proportion. He was inducted in the IFBB Hall of Fame in 1999.
Body for Life (BFL) is a 12-week nutrition and exercise program, and also an annual physique transformation competition. The program utilizes a low-fat high-protein diet. It was created by Bill Phillips, a former competitive bodybuilder and previous owner of EAS, a manufacturer of nutritional supplements. It has been popularized by a bestselling book of the same name.
Strength training, also known as weight training or resistance training, involves the performance of physical exercises that are designed to improve strength and endurance. It is often associated with the lifting of weights. It can also incorporate a variety of training techniques such as bodyweight exercises, isometrics, and plyometrics.
Arthur Allen Jones was the founder of Nautilus, Inc. and MedX, Inc. and the inventor of the Nautilus exercise machines, including the Nautilus pullover, which was first sold in 1970. Jones was a pioneer in the field of physical exercise i.e. weight and strength training. He was born in Arkansas, and grew up in Seminole, Oklahoma.
William Arnold Pearl was an American professional bodybuilder and athlete. During the 1950s and 60s, he won many titles and awards, including winning the Mr. Universe contest five times, and was named "World's Best-Built Man of the Century". He later became an expert trainer and author on bodybuilding.
Casey Viator/Casius Viatoro was an American professional bodybuilder. He is noted as the youngest ever AAU Mr. America – gaining the title at the age of 19 in 1971.
Jason Isaac Cutler known professionally as Jay Cutler is an American retired professional bodybuilder. An IFBB Pro League bodybuilder, Cutler is a four-time Mr. Olympia winner, having won in 2006, 2007, 2009, and 2010; and a six-time runner-up, the most in history. He also won consecutive Arnold Classic titles in 2002, 2003, and 2004. In 2021, he was inducted into the International Sports Hall of Fame.
Thomas Steven Platz is an American retired professional bodybuilder. He was known for his leg development, which in his prime measured over 30 inches, earning him the nickname The Quadfather.
Lee Andrew McCutcheon is a competitive bodybuilder. He is a former International Federation of BodyBuilders (IFBB) professional bodybuilder and a current National Amateur Body-Builders' Association (NABBA) professional athlete.
Super Slow is a form of strengthening physical exercise popularized by Ken Hutchins. Super Slow is Hutchins' trademarked name for the High intensity training approach advocated by Arthur Jones. It is based on ideas from the 1940s and 1960s called 10/10 "muscle contraction with measured movement" and implemented using fixed weight Nautilus machines. In more recent times, such "Time Under Load" ideas have seen a renaissance with Dr Doug McGuff's best selling Body by Science.
Dona Oliveira was a professional female bodybuilder from the United States. She competed from the mid-1980s through the early 1990s.
Weightlifting or weight lifting generally refers to physical exercises and sports in which people lift weights, often in the form of dumbbells or barbells. People engage in weightlifting for a variety of different reasons. These can include: developing physical strength; promoting health and fitness; competing in weightlifting sports; and developing a muscular and aesthetic physique.
Split weight training, also known as split routine, or split workout routine, is a type of exercise workout routine. It is a workout regimen where different muscle groups are targeted on separate days, rather than exercising the entire body in a single session. This type of training allows for focused work on each muscle group while providing appropriate recovery time between training on the same muscle. This type of training is mostly used by bodybuilders and fitness trainers, while professional lifters typically avoid this approach.
Jeremy Buendia is an American professional bodybuilder who competes in the IFBB Men's Physique Division. He is a four-time Men's Physique Mr. Olympia beginning from 2014 to 2017.
{{cite web}}
: CS1 maint: multiple names: authors list (link)