FluidPowerZone is a range of fluid resistance fitness machines, designed for training in any Zone - Cardio, Power, Strength or Speed. FluidPowerZone machines can be used individually, or by combining multiple machines to make up a fitness circuit. The patented Twin Tank technology delivers 10 different levels of fluid resistance for concentric only movements that will accommodate all levels and abilities, from general fitness enthusiasts to elite athletes and provides a perfect platform for rehabilitation/medical applications.