Relative Elevation, Self Carriage & Flying Changes of Leg
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In the frames below, Vulkan performs a flying change of leg from right to left medium canter on a given rein. He maintains his stable neck and axial skeleton posture through the whole change sequence and exhibits substantial positive disassociation of the diagonal pair of the canter into and out of the change.

The maintenance of positive relative elevation in canter involves positioning of the horse's pelvis as well as stabilization of the poll to maintain stretch of the entire topline ligament system.

4) The hind leg limb swap: compare hind leg position with frame 12. 3) Right canter, showing effect of half halt into change in the timing of the left hind (first step of new lead) 2) Right canter, RH toe down with positive disassociation (LF not yet landed). 1) Right canter, left hind toe down.
8) Positive relative elevation 7) Positive relative elevation 6) Positive relative elevation 5) Positive relative elevation
12) Left canter, suspension 11) Left canter, balance on RF-LH diagonal 10) Positive relative elevation 9) Positive relative elevation

Baucher on Partisan, flying change of leg: the artist has illustrated both marked positive relative elevation and turning of the head in the direction of the new lead. Compare this artist's rendition with frame 2 above.