Fig. 1

Retroreflective markers and IMUs (orange) mounted on stretch bands (black) while participants in calibration pose (note: IMUs hidden under stretch bands are indicated with a white dashed outline). The lower limb SUH marker set used: Sacrum, Anterior superior iliac spine, Lateral knee-joint line, Proximal to the superior border of the patella, Tibial tubercle, Heel, Lateral malleolus, and between the second and third Metatarsals. Laboratory and OpenSim biomechanical model coordinate systems shown