What is "gamercize"

Gamercize is an example of an exergaming accessory, connecting exercise machines such as stationary cycles and steppers to video games consoles. These consoles are supported by the following variations
GZ Sport - Xbox, GameCube, PlayStation, PlayStation 2
GZ Pro-Sport - Xbox 360, Wii, PlayStation 3
GZ PC-Sport - PC, Mac.

The exercise machines packaged with the above interfaces are
GZ Endurance Cycle - A portable mini exercise cycle used while seated.
GZ Power Stepper - A portable mini step machine used standing or seated for PC desk exercise.
GZ Family Fit - A folding recumbent cycle and rower combination machine.
Gamercize, protected by international patent applications in 2004, was first shown to the public at Leisure Industry Week in 2006.