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Fig. 4. Lateral (A,B) and dorsal (C,D) views of the positions for the right knee, ankle, metatarsal and toe tip relative to the hip (0, 0, 0) during one stride on a level 1 cm (A,C) and 10 cm (B,D) diameter perch. Positive values of x, y and z indicate anterior, dorsal and lateral movement, respectively. Open symbols, stance; filled symbols, swing portions of the stride; the overall direction of movement is clockwise. The time between successive points is 4 ms, and the strides are from the same individual.





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