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. 2014 Mar 25;11:27. doi: 10.1186/1742-9994-11-27

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Copyright © 2014 Nyakatura and Andrada; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Mean amplitude (± s.d.) ofE_pandE_kfluctuation (ΔE_pandΔE_k) in experimental trials (HB), simulated trials without head-bobbing (no HB) and simulated trials with inversely timed head-bobbing behavior (inv. HB). A: ΔE_p in vaulting trials; B: ΔE_p in bouncing trials; C: ΔE_k in vaulting trials; D: ΔE_k in bouncing trials.