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Fig. 5. Mean (± S.D.; broken lines) vertical ground
reaction force (blue) relative to percentage of stance duration for the
forelimb and hind limb at walk (A,B) and trot (C,D), and lead and non-lead
forelimbs at canter (E,F). A sine wave of equal base and area is superimposed
in red over the ground reaction force. Values in the upper left corner of each
graph indicate the percentage of the stance time for which the sine wave lies
within 1 S.D. of the mean force.