The Synergy group was the very first to design and manufacture pin loaded machines with compound converging/diverging arc, unilateral movement technology, for its upper body pin loaded machines, as well as many other original and innovative designs, including for example, the Seated Leg Curl machine and the first multifunction dual adjustable pulley system with adjustable back rest support (on which the Cybex Bravo concept is effectively based), all designed already way back in the early ...