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Fig. 3. Mean values for the positions of the right hindlimb relative to the right
hip (x=0, y=0, z=0, where x, y and
z indicate anterior, dorsal and lateral, respectively) for each
combination of incline (0°, 45° and 90°; columns) and locomotor
surface (rows) at footfall (A) and midstance (B) on different diameter perches
(1 cm, 3 cm, 6 cm, 10 cm and flat). From proximal to distal the endpoints of
the line segments represent the hip, knee, ankle, distal end of the
metatarsals and tip of the fourth toe. Sample sizes range from 10 to 16
strides (from four individuals per species) for each combination of the two
factors. The projections onto the yz and
yx planes correspond to anterior view and right
lateral views, respectively.