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Strength Training: Negative Only

Research conducted by Dr. Ellington Darden, Ph.D., on men and women at Gainesville Health and Fitness has shown the remarkable power of X-Force machine strength training when combined with a well-balanced, decreasing-calorie diet, super-hydration, and extra rest.

The innovative technology used exclusively in the X-Force Body program is the most meaningful advance in strength training in the last 30 years. Each X-Force exercise machine houses a patented “tilting” weight stack which allows for a 40% heavier resistance on the “negative” or lowering part of the exercise. This heavier negative resistance greatly increases the intensity of muscle exertion during each repetition, which translates into significant strength gains and fat loss in less time!

Exercise scientists have found that negative (accentuated) resistance training can rapidly improve muscle size and strength. How does it work? There are two phases in every strength exercise:

  • In the positive training phase, the muscle shortens as it contracts to raise the weight.
  • In the negative phase, the opposite happens: the muscle lengthens as it resists the weight as it is lowered. When we lower a weight we are approximately 40% stronger than when we raise it.

The idea behind the X-Force machine is simple: by tilting the weight stack 45 degrees on the positive motion, we’ve been able to supply a 40% heavier load to the negative phase, where we get the most “bang for the buck.” The result is a deeper “inroad" on each repetition and more efficient training. This also means time better spent at the gym! Results that previously required three, four or five hour-long workouts a week can now be stimulated with only two, 30-minute X-Force Body sessions weekly.


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Killing Fat
NEW Book by Dr. Ellington Darden, Ph.D. Available January 2019 everywhere books are sold. Learn more.