Gao, Jianbo, Gurbaxani, Brian M, Hu, Jing et al. · Frontiers in physiology · 2013 · DOI
This study looked at how the heart rate patterns of people with ME/CFS differ from healthy people, especially when they're under stress. Researchers used advanced computer methods to analyze heart rate data collected during a social stress test. They found that before the stress test, people with ME/CFS had noticeably different heart rate patterns than healthy controls, but these differences became smaller during the stress test itself.
ME/CFS lacks established biomarkers, making diagnosis difficult and delaying treatment. This study suggests that heart rate patterns measured with advanced analytical methods may help distinguish ME/CFS patients from healthy individuals, potentially contributing to future diagnostic tools. Understanding physiological differences in heart rate regulation could improve recognition of ME/CFS and advance research into its underlying mechanisms.
This study does not prove that abnormal heart rate patterns cause ME/CFS or that HRV differences are specific to ME/CFS rather than other conditions. The observed differences during stress testing do not establish whether these patterns are clinically useful for diagnosis, and the study cannot explain why differences diminish during stress or what this means for patient health. Correlation between HRV patterns and ME/CFS does not equal a validated clinical biomarker.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
The first block is for the primary paper and is the citation you should use in research work. The atlas-snapshot line only applies if you are specifically referring to this atlas’s reading of the paper on the date shown.
Primary citation
Gao, Jianbo, Gurbaxani, Brian M, Hu, Jing, Heilman, Keri J, Emanuele Ii, Vincent A, Lewis, Greg F, et al. (2013). Multiscale analysis of heart rate variability in non-stationary environments.. Frontiers in physiology. https://doi.org/10.3389/fphys.2013.00119
BibTeX
@article{mecfsatlas-gao-2013-multiscale-analysis,
author = {Gao, Jianbo and Gurbaxani, Brian M and Hu, Jing and Heilman, Keri J and Emanuele Ii, Vincent A and Lewis, Greg F and Davila, Maria and Unger, Elizabeth R and Lin, Jin-Mann S},
title = {Multiscale analysis of heart rate variability in non-stationary environments.},
journal = {Frontiers in physiology},
year = {2013},
doi = {10.3389/fphys.2013.00119},
note = {PubMed: 23755016},
url = {https://www.mecfsatlas.com/evidence/gao-2013-multiscale-analysis},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-30. https://www.mecfsatlas.com/evidence/gao-2013-multiscale-analysis
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