Figure 5.

(a) Total positive body mass-specific joint mechanical work estimated to be generated via release of stored elastic energy during the stance phase (single limb), (b) the average positive body mass-specific mechanical power estimated to be generated by the release of elastic energy (both limbs), and (c) the percentage of the total positive mechanical power during the stance phase that is generated by the release of stored elastic energy in ostriches and humans. The asterisk denotes a significant difference between ostriches and humans (p < 0.05).