Fig. 4From: Use of the margin of stability to quantify stability in pathologic gait – a qualitative systematic reviewDiagram showing the relationship between CoP and XcoM throughout the gait cycleThe CoP (solid line) moves from heel to toe during single support and moves between the feet during double support. The XcoM (dash line) snakes approximately synchronously with the CoP during normal gait. This figure was inspired by Fig. 2 in Day, et al. (2012) [38] and created by FWBack to article page