SCIFIT ergometers are premium commercial fitness machines that can be used as upper body (PRO1000) or total body (PRO2) conditioners. Both bikes are wheelchair accessible and feature variable length hand cranks that can be configured to simulate a rowing motion. Bi-directional resistance is built into the bikes to facilitate strengthening of reciprocal muscle groups. A single flywheel allows the user to passively work the lower body (PRO2 only) while actively working the upper body or vice versa. Swivel seat offers height adjustability for easy, comfortable access. Step through seating design makes getting on and off the bikes quick and easy. Optional boots are available for patients with limited lower extremity strength. The PRO2 and PRO1000 are both wheelchair accessible. Optional tethers and wheelchair platform help secure wheelchairs to the bikes.