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. 2022 Feb 28;9(2):e26479. doi: 10.2196/26479

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©Megan A Kirk, Bilal Taha, Kevin Dang, Hugh McCague, Dimitrios Hatzinakos, Joel Katz, Paul Ritvo. Originally published in JMIR Mental Health (https://mental.jmir.org), 28.02.2022.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIR Mental Health, is properly cited. The complete bibliographic information, a link to the original publication on https://mental.jmir.org/, as well as this copyright and license information must be included.

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The HF-HRV of participants with PTSD at baseline (T1) and postintervention (T2) compared with participants without PTSD during the 25-minute protocol conditions of rest, stress, and guided meditation. HF-HRV is presented as a log10-transformed plot with SE bars. HF-HRV: high-frequency heart rate variability; PTSD: posttraumatic stress disorder; T1: time point 1; T2: time point 2.