Proteus Motion

Proteus Motion is a New York City-based sports technology company founded in 2016 by Sam Miller, originally operating as Boston Biomotion. The company designs and manufactures the Proteus System, a patented 3D Resistance training device that provides multi-planar resistance to measure and improve human strength and power across all planes of movement. Unlike traditional resistance training tools constrained to a single axis, Proteus captures comprehensive movement intelligence — turning workout data into actionable performance insights for athletes, trainers, and physical rehabilitation professionals. The company partnered with a leading medical institution in 2017 and deployed its first system in 2018. Today, Proteus Motion serves tens of thousands of users across nearly all 50 US states, including many elite professional athletes, and is positioned as a next-generation standard for physical strength measurement in sports performance and longevity wellness markets.