Iso-Motion allows FULL joint rotation while the muscles are under load... this "pilates/yoga" type movement allows Strength, Tone, Flexibility and Endurance to be built up naturally in everyday movement. The Steel-Bow comes with 3 Inter-Changing Resistance Springs, the user can adjust the level of resistance to fit their fitness needs.  This allows anyone to use the Steel Bow, even in Iso-Motion.
With the Steel-Bow, resistance can be adjusted so all three fitness routines: Isometric, Isotonic & Iso-Motion can be properly performed by anyone.  This is most advantageous when one is performing Isotonic (repetition) exercises, as the resistance level allows for full compression of the Steel-Bow for a high number of repetitions.  This is a very effective for muscle definition.
With 3 Springs to vary your resistance, the Steel-Bow allows for:  Simple Muscle Toning to Heavy Power Training. Next page: Models