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. 2015 Apr;218(7):1028–1034. doi: 10.1242/jeb.111393

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© 2015. Published by The Company of Biologists Ltd

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.

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Fig. 2. — Relationships between mass-specific energetic parameters and walking speed. Data points and best-fit lines are as in Fig. 1. The lines of best fit are (A) metabolic power, P_met=16.20U+6.93 (bantam) and 16.20U+5.86 (large); and net metabolic power, net-P_met=16.00U−0.88 (bantam) and 16.00U−1.26 (large); (B) total cost of transport, CoT_tot=22.39U^−0.50 (bantam) and 19.95U^−0.50 (large); and net cost of transport, CoT_net=4.77U+11.89 (bantam) and 4.77U+10.53 (large); and (C) net cost per stride=7.10U+2.42 (bantam) and 21.21U+0.24 (large). Mass-specific resting (standing) metabolic rates are also included in A at 0 m s⁻¹. Data points are means±s.e.m.