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Fig. 6. Predicted versus observed mean vertical GRF. (A) Because the point
of footground contact shifts forward between heel-strike and toe-off,
standing hip height, L, underestimates the effective length of the
hindlimb, L'. (Adapted from
Gottschall and Kram, 2005.)
(B) Using L to predict vertical GRF via the LiMb model
consistently overestimates vertical GRF (open squares), while
L' provides a reasonably good fit (closed circles). Broken line
indicates y=x.