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. 2019 Oct 9;10:1260. doi: 10.3389/fphys.2019.01260

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Copyright © 2019 Bruseghini, Capelli, Calabria, Rossi and Tam.

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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Anatomical cross-sectional area (ACSA, cm²) of the quadriceps assessed before (filled symbols) and after (empty symbols) high-intensity interval training (HIT, A) and isoinertial resistance training (IRT, B) at 75, 50, and 25% of the length between the greater trochanter to the upper border of the patella (LF) (^∗P < 0.05; ^∗∗P < 0.01).