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.

aRMSE（root mean square error，均方根误差）、rRMSE（relative root mean square error，相对均方根误差）、Fx（horizontal component of ground reaction force，地面反作用力水平分量）、Fy（vertical component of ground reaction force，地面反作用力垂直分量）、CoP（displacement of center of pressure，压力中心位移）、FRA（foot rotation angle，足部旋转角度）、PRA（phalanx rotation angle，趾骨旋转角度）、HP（plantar pressure in the heel medial region，足跟内侧区域足底压力）、MP（plantar pressure in the 1st metatarsal region，第一跖骨区域足底压力）。其中前三个参数组属于材料属性，最后一组参数则涉及以0.6为基准调整摩擦系数。