Fig. 2.

Schematic illustration of gait parameter acquisition. Participants walked at a self-selected speed along a 14-m walkway instrumented with the A7® 3D Motion Acquisition System. The IMU sensors were positioned at the waist, thighs, shanks, and feet. Data were collected within a 10-m zone (2–12 m), following a 2-m acceleration area and preceding a 2-m deceleration area