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. 2011 Nov 7;11(11):10571–10585. doi: 10.3390/s111110571

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© 2011 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 9. — Boxplots presenting comparison between joint angles (for knee and ankle angles) calculated from accelerometers and goniometers. Left: Pearson’s correlation coefficient (PCC). Right: root-mean-square error (RMSE).