Fig. 3From: Modeling the neuro-mechanics of human balance when recovering from a fall: a continuous-time approachStiffness around the joints axis of the constructed double pendulum. The blue line shows the estimated stiffness value considering constant linear springs and a changing moment arm. The black markers represent the estimated parameter obtained using a KF. The dashed red line shows the best fit of the estimated parameter values as a function of joint angleBack to article page