Figure 1.

Experimental setup. (a) The reflective markers were attached to each subject according to Plug-in Gait (PiG). The iPhone with SWAY Balance Mobile Application (SBMA) was secured to the subject's chest, and the subject stood on the Biosway platform or foam pad placed over the platform. For establishing Base of Support (BOS), markers were placed on the foot at tip of second toe (TOE), lateral head of 5^th metatarsals (LMET), lateral malleoli (ANK), heel (HEEL), and medial head of 1^st metatarsals (MMET). (b) Marker trajectories were recorded through the motion capture system (MOCAP) to generate a kinematic stick figure and process a modeled Center of Mass (COM) position. The trajectory of COM was projected onto BOS for a representative subject during (c) double leg, (d) single leg on left foot, and (e) single leg on right foot.