AlterG

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. On August 11, 2023, ReWalk Robotics completed the purchase of AlterG for $19 million. Founded in 2005¹ by Sean Whalen in Fremont, California, the company has Charles Remsberg as its CEO.

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. On August 11, 2023, ReWalk Robotics completed the purchase of AlterG for $19 million. Founded in 2005 by Sean Whalen in Fremont, California, the company has Charles Remsberg as its CEO. ===Differential air pressure=== NASA developed the differential air pressure technique as a way for astronauts to exercise and maintain conditioning in space. In 2012, NASA purchased the P200 model to use for pre-flight and post-flight training of International Space Station astronauts. AlterG now holds a patent for this technology, which employs air pressure to adjust the users body weight on the treadmill between 20% and 100% of normal weight. A year later, AlterG was named by Fast Company as one of the top 10 most innovative companies in sports for its Anti-Gravity Treadmill. The company's Anti-Gravity Treadmill M320 was cleared by the FDA for use in medical facilities, hospitals, physical therapy clinics, and skilled nursing facilities - like the other models, the M320 can reduce a user's body weight by up to 80%. Launched in 2013, the Anti-Gravity Treadmill F320 is classified as a fitness product and does not meet some of the electrical interference requirements designated by some hospitals. Meanwhile, Pro Anti-Gravity Treamills are used in professional athlete training and conditioning because of their high top speed of 18 mph. ===Intention based therapy=== Bob Horst developed the technology behind the Bionic Leg, which contains sensors and robotics that detect and provide force when a patient's weight shifts. The Bionic Leg is a battery-operated external brace that uses information from foot sensors to predict the user's movements while the user walks, sits, and stands.

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