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. 2019 Oct 24;10:1339. doi: 10.3389/fphys.2019.01339

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Copyright © 2019 Meyer, Mordukhovich, Wellenius, Mittleman, McCracken, Coull and McNeely.

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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Time-varying associations between simulated flight exposure and heart rate (HR) and HRV (RMSSD, SDNN, HF, and LF). The simulated flight day is in blue; the control day is in green. Solid color lines indicate the average effect of exposure over time while the shaded bands are 95% confidence intervals for the corresponding line. Dashed gray lines are placed at zero for reference. Plotted estimates represent the changes from pre-condition for log(HR) and log(HRV) as a function of duration.