A climbing exercise apparatus is provided having a frame on which two pedals are pivotally mounted to provide a user with a vertically reciprocating exercise movement, and a control panel for user input and output. A dynamic break, alternator or the like applies a variable level of resistance (via a...http://www.google.com/patents/US5403252?utm_source=gb-gplus-sharePatent US5403252 - Exercise apparatus and method for simulating hill climbing
