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. Author manuscript; available in PMC: 2009 Dec 1.
Published in final edited form as: Biol Cybern. 2008 Nov 5;99(6):503–516. doi: 10.1007/s00422-008-0258-5

Fig. 2.

Fig. 2

Model analysis. (a) The steady state output joint angles when each of eight muscles is fully activated. (b) An example of strong coupling and nonlinearity properties of the ankle-subtlar joint system. The subtalar joint moments generated by the maximum MG activation with respect to subtalar joint angle variations were calculated for four different ankle joint angles from −30° to 15°. The magnitudes and the direction of the subtalar joint moment depend on the ankle joint angle as well as the subtalar joint angle.