Research clearly supports that negative training significantly improves muscular size and strength. X-Force now introduces machines that enables easy negative training. More
See the X-Force difference
X-Force introduces an entirely new, patented method for negative training. The machines feature a radically different construction. more
Why X-Force?
In comparison to traditional weight-training machines, X-Force has a number of advantages. More
Negative training
Since negative training puts more load on the muscles, additional recovery time off is needed between training sessions. More
Our Story
In 1980, Mats Thulin first met Arthur Jones, the founder of Nautilus Sports/Medical Industries and the inventor of Nautilus exercise machines. More
The X-Force products
The idea behind X-Force is simple. By tilting the weight stack 45 degrees on the positive motion; we’ve been able to supply a 40-percent heavier negative stroke. More
