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. 2022 May 16;13:890536. doi: 10.3389/fphys.2022.890536

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Copyright © 2022 Zhang, Wang, Xing, Cui, Cheng, Chen, Chen, Liu, Wang and Chen.

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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HRV dynamic changes in Group A (IDWG≥3 kg) and Group B (IDWG<3 kg). Changes in the time domain (SDNN, RMSSD, |AC|, DC), frequency domain (TP, LF, HF, LF/HF), and nonlinear (SD1, SD2, SD1/SD2, SampEn) measurement of HRV compared with 0–30 min in two subgroups. Red and blue lines or “*” stand for IDWG≥3 kg and IDWG<3 kg, respectively. “△” stands for the difference compared to the baseline. “*” stands for statistically significant (p < 0.05) by one-way repeated measures ANOVA adjusted by Bonferroni’s multiple comparisons tests (vs the baseline in 0–30 min). Error bars stand for the standard error of the mean (SEM).