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In 2005, P90X, or Power 90 Extreme, was created by Tony Horton as a commercial home exercise regimen and developed as a successor to the program called "Power 90". It consists of a training program that uses cross-training and periodization, combined with a nutrition and dietary supplement plan. [7] It was heavily marketed through infomercials ...
After further research and testing involving over 600 volunteers, he produced a program with ten basic exercises (XBX) for women that required twelve minutes to complete. [7] The programs proved popular with civilians. A U.S. edition was published in 1962 under the title Royal Canadian Air Force Exercise Plans For Physical Fitness. [8]
Tony Horton became interested in fitness when he took a weightlifting class while attending the University of Rhode Island and was a member of Phi Kappa Psi. After graduation, he moved to Southern California and worked various jobs, including as a stand-up comedian and gofer for 20th Century Fox .
The position is held as long as possible. The exercise is used to strengthen the quadriceps. Contrary to previous advice in this section, this exercise is NOT good for people with knee problems because the knees bear most of the load, especially when they are held at right angles (90 degrees). [citation needed] Equipment
As students began reporting marked improvement in their physical and mental health, Wilson became convinced that there was a need for this type of exercise program on a national level. In 1987, KSPS-TV agreed to produce her Sit and Be Fit television series and distributed the first 30 episodes nationwide. [ 7 ]
Fitness instructor Kathy Smith first experienced the Williams/Miller prototype step aerobics program during its early days, thinking "This is the most cutting-edge workout I’ve ever seen." [14] Miller and Williams formed a company called Bench Blast in late 1988, making wooden steps from 6 to 12 inches high. [11]