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Fig. 8. Individual limb vertical (Fz), foreaft
(Fy) and lateral (Fx) ground reaction
force components for the fore and hind limbs versus time for dogs
walking at 0.8 m s1. Forces are expressed as a fraction of
body weight (Wb). The fore limb forces were much larger
than the hind limb forces. The solid line represents the mean trace for the
six dogs, and the broken lines are ±1 S.D. Note
that the y-axis scales differ. Positive values correspond to up
(Fz), forward (Fy) and medial
(Fx).