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. 2015 Jul 28;10(7):e0133936. doi: 10.1371/journal.pone.0133936

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© 2015 Catavitello et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 5 — A: timing of minima (triangle) of the elevation angles (±SD). Y axis: t—thigh, s—shank, f–foot, u–upper arm, l–lower arm, h–hand. B: Characteristics of the first harmonic of HL and FL segment elevation angles. Upper panels—percent of variance accounted for by the first harmonic. Lower panels—phase of the first harmonics (circle) (zero refers to the cosine function). Note the phase-lead of the thigh segment in HL and of the lower arm segment in FL in all gaits (consistent with the temporal sequence of minima in the elevation angles, panel A).