A system comprising an exercise system having a resistance structure of an exercise bar connected to cables, which cables are connected to at least one pneumatic cylinder that creates resistance, wherein the resistance is adjusted by the user via actuators in the exercise bar, so that the user does not need to release the exercise bar to adjust the resistance. The system may be supported by a frame, and the pneumatic cylinder may be connected to an equalizing tank that may be housed within or integrated into the frame. The system may include a monitor to visually display system parameters and other information to the user. The system may calculate resistance and work done by the user by measuring piston displacement and speed, as well as using accelerometers or other devices integrated into the exercise bar.