Fig. 1. A schematic diagram of the linked segment model used to calculate joint moments, power and work. (A) The internal angles that were measured. Angles () were measured at hip (h), knee (k), ankle (a) and metatarsophalageal joint (MP). (B) Elements of the linked segment model used in the inverse dynamics calculations, where m is the mass of each segment, I is the mass moment of inertia of each segment and F_x and F_y are the horizontal and vertical ground reaction forces (GRF), respectively. The center of pressure of the GRF on the foot was determined by the force plate.