Fig. 1From: Movement coordination patterns between the foot joints during walking a Polar coordinate chart for the identification of coordination patterns between foot joints rotations. An exemplary trajectory of the coupling angle between ShCa (y) and CaMi (y) rotations is superimposed to the polar coordinate chart. b the frame-by-frame slope of the coupling angle is analysed to determine the coordination patterns. c Graphical representation of the four possible coordination patterns: in-phase; anti-phase; proximal, and distalBack to article page