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. 2015 Nov 4;3(11):e12608. doi: 10.14814/phy2.12608

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© 2015 The Authors. Physiological Reports published by Wiley Periodicals, Inc. on behalf of the American Physiological Society and The Physiological Society.

This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Effects of knee angle on sarcomere lengths of the tibialis anterior (TA). (A) TA fiber mean sarcomere lengths given for the pooled medial and lateral region with ankle angle set to 90° (■, n = 12) and 125° (◊, n = 12). Slopes of the linear regression lines were −0.02 μm/100° and 0.00 μm/100°, respectively. (B) Length of sarcomeres located in proximal (■), intermediate (♦), and distal (∆) fiber segments with ankle angle set to 90°. Slopes of the linear regression lines were −0.11 μm/100°, 0.01 μm/100°, and 0.03 μm/100°, respectively. (C) Length of sarcomeres located in proximal (■), intermediate (♦), and distal (∆) fiber segments with ankle angle set to 125°. Slopes of the linear regression lines were −0.03 μm/100°, 0.02 μm/100°, and 0.06 μm/100°, respectively. (D) Effects of knee angle on sarcomere length distribution in TA at ankle angles of 90° and 125°.