: Performing an extension (like a leg extension) where only the primary joint (the knee) moves, ensuring the target muscle (quadriceps) does 100% of the work. Terminal Extension

The optical tracking component of Pure Motion Extension uses high-resolution cameras to track the movement of reflective markers attached to the actor's body. This information is then combined with the data from the IMUs to provide a highly accurate and detailed record of the actor's movement.

: Includes a tibial pad to reduce shin pressure and a seat designed to protect the popliteal region (back of the knee).

The Pure Motion extension is a popular tool for Google Chrome and Mozilla Firefox that replaces standard embedded video players with a more functional, ad-free interface.