Summary of four optimization subcases (performed for each case - see Table 1) that varied how muscle excitations were constructed and whether experimental EMG shapes were tracked. Ind indicates that all 44 muscle excitation controls were constructed independently, while Syn indicates that the 44 muscle excitation controls were constructed from linear combinations of only 5 neural commands obtained from synergy analysis of the 13 processed experimental EMG signals. EMG indicates that the shapes of processed experimental EMG signals were tracked.