Arthur Jones is the legendary founder of Nautilus. In 1986, he founded MedX to perfect the testing of human strength, endurance and range of motion. After years of development and testing, validated by independent research teams at the University of Florida, MedX perfected its medical Lumbar Extension machine. It has since helped tens of thousands of people around the world reduce or eliminate their back pain.
Subsequent developments produced the MedX Cervical Extension, Rotary Neck and Torso, and Knee/Hamstring machines, providing the medical community with the first tools capable of producing specific and accurate tests of functional ability, as well as the finest source of rehabilitative exercise.
MedX applied the knowledge gained from its medical machines to the design of a full line of exercise-only machines. These machines incorporated MedX's patented compound weight stack which produces less friction and enables several hundred levels of available resistance in increments of 2ft-lbs. This feature reduces user strain and, for the first time, made it possible for individuals to select the exact level of resistance required regardless of their strength.
In 2002, MedX created exercise versions of its medical machines and branded them the Core Spinal Fitness System™ In less than 20 minutes, twice a week, these five machines focus on the strength, stability, flexibility and endurance of the body's core, providing a solid foundation for whole body strength.