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. 2023 Jan 10;13:992655. doi: 10.3389/fphys.2022.992655

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Copyright © 2023 Zhang, Liang, Huang, Ding, Li, Zhang, Li, Zhou, Sun and Li.

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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Four-quadrant diagram of changes in DJ-height and RSI in VBRT (A) or PBRT (B). DJ-height and DJ-RSI: the height and reactive strength index of 40 cm drop jump test.