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. 2020 Apr 17;11:202. doi: 10.3389/fneur.2020.00202

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Copyright © 2020 Gagnat, Brændvik and Roeleveld.

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) and the copyright owner(s) 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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Coactivation index 1 (CoA1) calculated using (A) absolute sEMG-RMS amplitudes (CoA1-abs) and (B) using normalized sEMG-RMS amplitudes (CoA1-norm), presented as mean with 95% confidence interval. Calculated for three coactivation muscle pairs: tibialis anterior/gastrocnemius medialis, tibialis anterior/soleus, and rectus femoris/hamstring medialis, for each of the six gait phases (named in the bottom line). The agonist in the coactivation index muscle pair is indicated for each gait phase below each subplot. TA, tibialis anterior; GM, gastrocnemius medialis; SOL, soleus; RF, rectus femoris; HM, hamstring medialis. ^*Significant group differences (p < 0.05), °p < 0.1.