The result of material properties, frictional coefficient and damping coefficient sensitivity analyses of the foot finite element model.

aRMSE = root mean square error, rRMSE = relative root mean square error, Fx = horizontal component of ground reaction force, Fy = vertical component of ground reaction force, CoP = displacement of center of pressure, FRA = foot rotation angle, PRA = phalanx rotation angle, HP = plantar pressure in the heel medial region, MP = plantar pressure in the 1st metatarsal region. The first three sets of parameters are material properties, and the final set involves altering the frictional coefficient from 0.6.