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Fig. 7. Limb phase versus speed. Each limb phase was calculated relative
to the left hind limb (i.e. left hind limb phase=0%). At all speeds, each fore
limb contacted the ground approximately 15% of the stride time after the
ipsilateral hind limb. Hildebrand defined this limb phase and footfall pattern
as a lateral sequence walk (Hildebrand,
1968,
1976). The order of footfalls
was left hind (LH), left fore (LF), right hind (RH) and right fore (RF).
Values are means ± S.E.M. for all of
the dogs. Error bars are too small to be visible in most cases.