Arc Trainer

The Arc Trainer is a stationary, non-impact exercise machine, and is a registered trademark of Cybex International, Inc.

The arc pattern of motion is a patented technology,[1][citation needed] designed to generate force only when the user is in the load-bearing phase of the gait cycle.

This generates forces in the legs which balance the loading between the hip and knee joints.

[2] The result of this balanced loading design creates less stress on the knee joint and allows higher muscle training effect with lower perceived exertion.

[citation needed] The Arc Trainer is adjustable for incline and resistance and has a variable stride rate.