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. 2019 Nov 7;48(2):0300060519885268. doi: 10.1177/0300060519885268

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© The Author(s) 2019

Creative Commons Non Commercial CC BY-NC: This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 2. — Scatter plots of test-retest reliability of the three back extensor strength (BES) procedures in healthy adults (n = 60), showing: (a) standing; (b) prone; and (c) sitting positions. An overall excellent reliability was found in all protocols. N, Newtons; S1, session 1; S2, session 2; ICC, intra-class correlation. P < 0.001 (Pearson’s correlation coefficient analyses).