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. 2021 Nov 2;15:763580. doi: 10.3389/fnhum.2021.763580

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Copyright © 2021 Hikosaka and Aramaki.

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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Individual data from post-test handgrip force normalized by a pre-test in the right-hand fatigue condition. Nine subjects showed greater bimanual left (BL) and right (BR) handgrip force compared with unimanual left (UL) and right (UR) performance (orange solid rectangle). Three subjects exhibited greater BR handgrip force than UR performance but lower BL handgrip force than UL performance (green dashed rectangle). Four subjects showed a pattern in which BL and BR handgrip force were reduced more than UL and UR performance (blue dotted rectangle).