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. 2020 Jul 13;10(7):445. doi: 10.3390/brainsci10070445

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Group averages of normalized (% of baseline) MEP amplitudes for (A) FCR, (B) ECR, (C) FDS, (D) EDC, (E) FCU and (F) ECU. Black/grey lines are muscle activity collected on the wrist flexion/extension fatigue sessions, respectively. Horizontal dashed lines represent baseline (pre-fatigue) values. The x-axes denote time, with “0” representing the first measurement immediately after the cessation of the fatigue-inducing trial. All unlabeled points occurred 15 s after the preceding time point. * denotes a significant difference between sessions at a single measurement point. ** denotes a significant difference of a single measurement point (across both sessions) to “0”. Error bars represent standard error.