Wii Fitness just launched in Japan, so this can’t be a coincidence that the price of the "stone age" fitness gaming gadget just dropped?
The Gamercize GZ Sport exercise and gaming peripheral attaches to your Playstation 2, bypassing your controller. If you want your game to work, you have to work as well. The pedal or stepper attachment notices when you’re working out, and when you’re slacking. If you’re working hard enough, your controller remains connected to the console. If you stop, your play is interrupted. No whining!
The Gamercize GZ Sport’s intensity dial ramps up the difficulty when you want a bigger challenge. Once your pace slows below a certain intensity, the controller disconnects from the PS2, and you have to get moving again.
Link: Gaming Sports Gear