| CPC A63B 21/0058 (2013.01) [A63B 21/153 (2013.01); A63B 24/0087 (2013.01); A63B 21/4035 (2015.10); A63B 2220/20 (2013.01)] | 20 Claims |

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1. A method of operating an exercise device including a first motor, a second motor, a first spool coupled to the first motor, a second spool coupled to the second motor, a first cable coupled to the first spool for winding onto and off the first spool in response to a torque applied by the first motor, a second cable coupled to the second spool for winding onto and off the second spool in response to a torque applied by the second motor, the method comprising:
determining a first value related to an extension of the first cable from the first spool;
determining a second value related to an extension of the second cable from the second spool;
determining a difference between the first value and the second value; and
adjusting the torque applied by at least one of the first motor and the second motor based on the difference between the first value and the second value.
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