AlterG® Anti-Gravity Treadmill

Our sports rehabilitation physical therapists use the AlterG treadmill to improve an athlete's rehabilitation regimen.UW Health Sports Rehabilitation physical therapists and athletic trainers use the AlterG® Anti-Gravity Treadmill to "unweight" athletes and allow them to rehabilitate injuries while minimizing the impact of gravity on the athlete's body.


Where is the treadmill?


The Alter-G treadmill is available to UW Health Sports Rehabilitation patients at our The American Center locations.


How does the treadmill work?


The Alter-G treadmill allows athletes to "unweight" their bodies in a pressure-controlled chamber. The treadmill lifts the runner as they train according to the percentage of the athlete's body weight entered in the treadmill's operating system.

  • Rehabilitating athletes select the level of support at which they work
  • The treadmill allows athletes to train at speeds as fast as 12 miles per hour (five-minute miles)
  • The treadmill can be set to as much as a 15 percent incline

How does the treadmill benefit rehabilitation?


For rehabilitation, the treadmill allows athletes to:

  • Walk or run with no pain while maintaining a normal gait
  • Reduce stress on joints and injured areas of the lower body

Unweighting, then, allows athletes to walk or run during injury rehabilitation while minimizing stress on the body.


How do I set up an appointment to use the treadmill?


Talk to your physical therapist to see if the treadmill will benefit your rehabilitation. UW Health Sports Rehabilitation staff will call you to set up your appointment.


More Information

  • Attire: Patients need to use AlterG shorts while using the treadmill. You can use a pair of shorts issued by UW Health Sports Rehabilitation or go to to buy your own pair of shorts. A note about size: Performance shorts run a tad smaller than regular shorts.
  • Cost without your own pair of shorts: $25 for the first 30 minutes; $55 for 60 minutes; $75 for more than 60 minutes
  • Cost with your own pair of shorts: $20 for the first 30 minutes; $45 for 60 minutes; $65 for more than 60 minutes
  • Dynamic warm-up time is free.