Private company

AlterG

Logo: AlterG, Public domain, via Wikimedia Commons4

American medical technology company

AlterG, Inc. is a medical device company that makes mobility enhancement products for physical therapy and athletic training.3 From Wikipedia, CC BY-SA 4.0

Last updated Oct 16, 2026.

Overview

2005Founded1
  • HeadquartersFremont1
  • Websitewww.alterg.com
  • Incorporated inDE5
  • Business address48438 Milmont Drive, Fremont, Ca 945385
400x
Photo: Ajglincher, CC BY-SA 4.0, via Wikimedia Commons6

AlterG, Inc. is a medical device company that makes mobility enhancement products for physical therapy and athletic training. Its first product, the Anti-Gravity Treadmill, now has a product line that includes the M/F320, Via 400 and 400X, and Pro 200 and 500.3

How it started

History

Sean Whalen and his father developed the original prototype of the Anti-Gravity Treadmill in the family garage, using technology developed by NASA to create a treadmill that unweights a user through "differential air pressure". The Nike Oregon Project, runner and coach Alberto Salazar, the Oakland Raiders and the Golden State Warriors tested and used the prototype.

In 2007, the Washington Wizards were the first professional sports team to purchase the P200 model. The following year, the Miami Heat, Golden State Warriors, Chicago Bulls, Houston Rockets, Houston Texans, and Phoenix Suns all purchased the P200 for their training rooms.

In 2008, the U.S. Food and Drug Administration (FDA) cleared the Anti-Gravity Treadmill, which at the time went by the name G-Trainer, as a medical device applicable for uses in rehabilitation. Since then, the AlterG treadmill has been used for rehabilitating lower extremity injury or surgery, aerobic conditioning, weight control, gait training for neurological conditions, strengthening and conditioning the elderly.

Named CEO of AlterG, Inc. in 2011, Steve Basta is a graduate of the Johns Hopkins Biomedical Engineering program. Ten years after acquiring the Tiburon Corporation and adding the Bionic Leg to its product line, AlterG was purchased in 2023 by Israeli company ReWalk Robotics Ltd.

From Wikipedia’s article on AlterG, shared under CC BY-SA 4.0.3

Timeline

  1. 2005Founded Founded1

Sources

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