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. 2019 May 15;10:574. doi: 10.3389/fphys.2019.00574

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Copyright © 2019 Epro, Hunter, König, Schade and Karamanidis.

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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Correlation between the symmetry index of the maximal ankle plantar flexion moment (SI_Moment) and Achilles tendon stiffness (SI_Stiffness) in all analyzed elite athletes. Correlation coefficients were comparable for male elite jumpers (dark gray circles; r = 0.44; p < 0.01; n = 35) and female jumpers (light gray circles; r = 0.44; p = 0.01; n = 32). A positive symmetry index displays a greater value for the take-off leg and a negative symmetry index for the swing leg.