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Fig. 6. Average kinematic profiles of two-dimensional pectoral girdle, pelvic
girdle and overall trunk angles for Up (water-to-ramp; left panels) and Down
(ramp-to-water; right panels) sequences. Symbols indicate mean values; error
bars are S.E.M. The solid blue line is the smoothed average (see
Materials and methods). Gray regions are as in
Fig. 5. All strides begin and
end with the strike of the left hindfoot. Arrows above each panel indicate the
direction of motion; Down sequences have been reversed to facilitate
comparison across analogous strides.