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. 2020 Oct 29;11:598996. doi: 10.3389/fphys.2020.598996

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Copyright © 2020 Ema, Kanda, Shoji, Iida and Akagi.

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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Center of pressure (COP) speed (A) and root mean square of the electromyogram (RMS-EMG) of the medial gastrocnemius (MG, B), lateral gastrocnemius (LG, C), soleus (SOL, D), and tibialis anterior (TA, E) during single-leg standing before and after the intervention, and RMS-EMGs before the intervention (means of the control and vibration conditions, F). RMS-EMGs were normalized to those during maximal voluntary contraction (MVC) as agonist (%MVC). *Indicates a significant difference between older and young men. † Denotes a significant change after the intervention. ‡Shows a significant difference between control and vibration conditions. §Demonstrates a significant difference between muscles.