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. 2015 Jun 18;17(1):164. doi: 10.1186/s13075-015-0676-4

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© Shanahan et al. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise credited.

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Fig. 1 — Experimental setup. A control participant with the force recording apparatus used for a knee (quadriceps), b ankle (tibialis anterior), and c hand force-matching tasks. d Force-matching output: target force (grey dashed line) and match force (black line) output for a control participant’s knee task (representative of output across all participants and tasks)