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Fig. 1. Graphs of cost of transport against body mass Mb for
running animals. The upper line shows the net metabolic cost, and the lower
one the mechanical cost (ignoring fluctuations of internal kinetic energy, and
energy saving by elastic mechanisms). On the horizontal axis, 0.1 mg should
read 0.1 g. From R. J. Full: Mechanics and energetics of terrestrial
locomotion: bipeds to polypeds. In Energy Transformations in Cells and
Organisms (ed. W. Wieser and E. Gnaiger), pp. 175-182. Stuttgart: Thieme.
Reprinted by permission.