Elliptical machines offer a low-impact, cardiovascular workout with different levels of intensity. The intensity of your workout is determined by three factors -- the ramp incline, the pedal resistance and the speed you pedal. Not all ellipticals offer the incline feature, but most offer some type of resistance. Silent magnetic resistance, or SMR, is one type of elliptical machine resistance technology.
Identification
SMR is a trademarked name for a type of magnetic resistance. Many elliptical machines feature magnetic resistance; however, SMR is specific to Icon Health and Fitness exercise machines. Icon is one of the largest manufacturer of fitness equipment and is behind many popular brands, such as NordicTrack, ProForm, Reebok and Weslo, among others. These brands feature SMR technology in their products.
Design
Silent magnetic resistance is frictionless. SMR is created by a magnet close to the elliptical's flywheel. The closer the magnet comes to the flywheel, the more resistance is created and the more difficult it is to pedal the machine or move the arm levers. The magnet never actually touches the flywheel.
Function
The function of SMR technology is to provide resistance to the pedals or arm levers of an elliptical machine. Resistance is the most common method to increase the intensity of an elliptical machine workout.
Significance
Magnetic resistance is an advanced technology over the older belt resistance. As indicated in the name, SMR is a silent mechanism since there is no actual contact between the flywheel and the magnet.
Types
There are two types of SMR -- manual and motorized. Manual SMR technology is usually found on older elliptical models. On these machines, you have to move the magnet manually closer to the flywheel by turning a knob on the elliptical. Newer and more expensive machines feature motorized SMR technology. With these elliptical machines, you can change the resistance with the push of a button on the console. A motor then moves the magnet as needed.
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