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. 2013 Nov 15;8(11):e79486. doi: 10.1371/journal.pone.0079486

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© 2013 Maeo 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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Muscular activation level (% EMG_MVE) during maximal voluntary co-contraction in bodybuilders (circle) and nonathletes (square). The % EMG_MVE values for both biceps brachii (bodybuilders: 66±14% vs. nonathletes: 46±13%) and triceps brachii muscles (74±16% vs. 57±9%) were significantly higher in bodybuilders than in nonathletes. Open and closed symbols indicate individual and mean values, respectively.