It all started when NASA began launching astronauts into space for missions lasting 3-6 months. Without the pull of Earth’s gravity, the muscles and bones of these daring explorers and scientists were in danger of atrophy, so NASA Biomechanics Researcher Dr. Robert Whalen invented the first air-pressure controlled treadmill. Fast-forward to 2024, where the AlterG Anti-Gravity Treadmill offers precision unweighting technology for pain-free physical rehab and training that reduces strain on bones and joints. Ranging from $35,000 to $75,000 (for the AlterG Pro, which is a favorite with elite athletes), the units offer NASA Differential Air Pressure technology combined with advanced features such as session reports, pain recording, gait data, live video feedback and an intuitive touchscreen interface; AlterG.com.
