A system and method for mechanically coupling an energy harvester to strength training type exercise equipment is disclosed. An energy harvester with unwanted vibration forces is mechanically isolated from exercise equipment by a system comprising a plurality of mechanically compliant vibration isolators and a ballast mass; a flexible cord, pre-loaded with a near constant force spring is used to transmit motion from the weight stack to the energy harvester; the flexible cord has a force limiting feature to pre-excessive force from being transmitted from the energy harvester to the weight stack during an exercise motion.
