Anti-gravity treadmill now helps injured athletes
A treadmill developed at the NASA Ames Research Center for exercising in space has seen more athletes than astronauts lately.
AlterG, a California company, has sold more than 200 of the "anti-gravity" physical therapy and training treadmills, which are based on the NASA prototype, at $75,000 each. The buyers have mainly been sports teams, college athletic departments and hospitals. A new model, the M300, costs $24,500 and is starting to be acquired by physical therapy clinics and nursing homes, where they are used for exercise without the risk of falling.