Medical Specialty products feature the Nautilus range of motion limits.
In addition to designing each individual cam and function generator to emulate a patients force output, Nautilus incorporates the proper design into their range of motion limits.

When Nautilus moves the movement arm to limit range, the cam is also moved to insure that the resistance remains in proportion to the strength curve.  Other exercise machine manufacturers do not rotate the cam relative to the movement arm-which causes the strength curve to be out of phase with movement.

Curve A in Chart #4 shows a strength curve of a Nautilus machine.  It is not shifted out of phase when the movement arm is shuttled to a new starting position.  Curve B is a strength curve shifted 25 degrees out of phase. This has occurred because the movement arm was not moved when the cam was moved.  When the two strength curves are compared, one can see that the resistance for Curve B is 100lbs. (assuming a starting position of 25 degrees instead of 0). However, with the movement arm in this position, the resistance should be 137lbs.

Nautilus machines also have the smallest increments of adjustment. This allows for finer adjustment of the starting position. This is especially important when large increments are unacceptable, or when they are the cause of pain or injury. Adjustment of the Nautilus Range Limiter is simple and can be done without exiting the machine. No supervision is required and the position can be altered with the simple push of a finger-even between repetitions.

Nautilus product shown features the start point and terminal range of motion limits, as well as the optional full weight stack enclosures. Mechanism enclosures are standard.