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. 2015 Dec 24;6:404. doi: 10.3389/fphys.2015.00404

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Copyright © 2015 Morin, Gimenez, Edouard, Arnal, Jiménez-Reyes, Samozino, Brughelli and Mendiguchia.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Average EMG activity of the VL, RF, BF, and Glut muscles over the entire sprint acceleration (all steps), for the different phases of the step cycle. Error bars indicate standard deviation. VL, vastus lateralis; RF, rectus femoris; BF, biceps femoris; Glut, gluteus maximus; MVIC, maximal voluntary isometric contraction. The muscle effect on EMG activity was tested by One-way analyses of variance (^*, ANOVA significant main effect with P < 0.05; ns, not significant) and Newman Keuls post-hoc tests (a, significantly different from RF; b, significantly different from BF; c, significantly different from Glut).