Normal Sinus Rhythm RR Interval Database
Pollard, T., Moody, B. E., Lehman, L., Gow, B., Fernandes, C., Xie, C., Johnson, A., Mark, R. G., & Heldt, T. (2026). PhysioNet as a global platform for biomedical research. Nature Health. https://doi.org/10.1038/s44360-026-00096-z. Available from: https://rdcu.be/faatM
Introduction
This database includes beat annotation files for 54 long-term ECG recordings of subjects in normal sinus rhythm (30 men, aged 28.5 to 76, and 24 women, aged 58 to 73). The original ECG recordings (not available) were digitized at 128 samples per second, and the beat annotations were obtained by automated analysis with manual review and correction.
For additional data of this type, including digitized ECG signals, see the MIT-BIH Normal Sinus Rhythm Database.
Contributors
We thank Phyllis Stein, of Washington University School of Medicine, St. Louis; and Rochelle Goldsmith, of Columbia-Presbyterian Medical Center, New York, for their generous contributions of these data to PhysioNet.
References
The following studies have made use of these data:
- Goldsmith RL, Bigger JT, Steinman RC, et al. Comparison of 24-hour parasympathetic activity in endurance-trained and untrained young men. J Am Coll Cardiol 1992; 20:552-558. [Abstract]
- Bigger JT, Fleiss LF, Steinman RC, Rolnitzky LM, Schneider WJ, Stein PK. RR variability in healthy, middle-age persons compared with patients with chronic coronary heart disease or recent acute myocardial infarction. Circulation 1995; 91:1936-1943.
- Stein PK, Ehsani AA, Domitrovich PP, Kleiger RE, Rottman JN. The effect of exercise training on heart rate variability in healthy older adults. Am Heart J 1999; 138:567-576. [Abstract]
- Mietus JE, Peng C-K, Henry I, Goldsmith RL, Goldberger AL. The pNNx files: re-examining a widely used heart rate variability measure. Heart 2002; 88:378-380.
Cited by
5 publications cite this project. The most recent are listed below.
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Demographic reporting in biosignal datasets: a comprehensive analysis of the PhysioNet open access database
Sarah Jiang, Perisa Ashar, Md Mobashir Hasan Shandhi et al. The Lancet Digital Health, 2024. -
Revealing alterations in heart rate fluctuations during the progression of Chagas disease
Magdalena Maria Defeo, Laura Delaplace, Juan Carlos Goin et al. Frontiers in Medicine, 2024. -
Interpretable Machine Learning Techniques in ECG-Based Heart Disease Classification: A Systematic Review
Yehualashet Megersa Ayano, Friedhelm Schwenker, Bisrat Derebssa Dufera et al. Diagnostics, 2022. -
Burst-tree decomposition of time series reveals the structure of temporal correlations
Hang-Hyun Jo, Takayuki Hiraoka, Mikko Kivelä. Scientific Reports, 2020. -
Analysis of the Impact of Interpolation Methods of Missing RR-intervals Caused by Motion Artifacts on HRV Features Estimations
Davide Morelli, Alessio Rossi, Massimo Cairo et al. Sensors, 2019.
Citation data from OpenAlex. Papers that use the project without citing it may be missing.
Files
Total uncompressed size: 11.1 MB.
Access the files
- Download the ZIP file (11.1 MB)
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Download with the PhysioNet Python package:
physionet download nsr2db --version 1.0.0
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Download the files using your terminal:
wget -r -N -c -np https://physionet.org/files/nsr2db/1.0.0/
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Download the files using AWS command line tools:
aws s3 sync --no-sign-request s3://physionet-open/nsr2db/1.0.0/ DESTINATION
| Name | Size | Modified |
|---|---|---|
| ANNOTATORS (download) | 58 B | 2003-02-18 |
| RECORDS (download) | 378 B | 2003-02-27 |
| SHA256SUMS.txt (download) | 8.2 KB | 2019-02-20 |
| nsr001.ecg (download) | 208.7 KB | 2003-02-13 |
| nsr001.hea (download) | 33 B | 2003-02-20 |
| nsr002.ecg (download) | 217.6 KB | 2003-02-13 |
| nsr002.hea (download) | 33 B | 2003-02-20 |
| nsr003.ecg (download) | 191.2 KB | 2003-02-13 |
| nsr003.hea (download) | 33 B | 2003-02-20 |
| nsr004.ecg (download) | 191.1 KB | 2003-02-13 |
| nsr004.hea (download) | 33 B | 2003-02-20 |
| nsr005.ecg (download) | 229.1 KB | 2003-02-13 |
| nsr005.hea (download) | 33 B | 2003-02-20 |
| nsr006.ecg (download) | 201.4 KB | 2003-02-13 |
| nsr006.hea (download) | 33 B | 2003-02-20 |
| nsr007.ecg (download) | 210.0 KB | 2003-02-13 |
| nsr007.hea (download) | 33 B | 2003-02-20 |
| nsr008.ecg (download) | 211.1 KB | 2003-02-13 |
| nsr008.hea (download) | 33 B | 2003-02-20 |
| nsr009.ecg (download) | 200.9 KB | 2003-02-13 |
| nsr009.hea (download) | 33 B | 2003-02-20 |
| nsr010.ecg (download) | 188.1 KB | 2003-02-13 |
| nsr010.hea (download) | 33 B | 2003-02-20 |
| nsr011.ecg (download) | 227.6 KB | 2003-02-13 |
| nsr011.hea (download) | 33 B | 2003-02-20 |
| nsr012.ecg (download) | 193.3 KB | 2003-02-13 |
| nsr012.hea (download) | 33 B | 2003-02-20 |
| nsr013.ecg (download) | 226.3 KB | 2003-02-13 |
| nsr013.hea (download) | 33 B | 2003-02-20 |
| nsr014.ecg (download) | 218.6 KB | 2003-02-13 |
| nsr014.hea (download) | 33 B | 2003-02-20 |
| nsr015.ecg (download) | 201.6 KB | 2003-02-13 |
| nsr015.hea (download) | 33 B | 2003-02-20 |
| nsr016.ecg (download) | 191.9 KB | 2003-02-13 |
| nsr016.hea (download) | 33 B | 2003-02-20 |
| nsr017.ecg (download) | 197.2 KB | 2003-02-13 |
| nsr017.hea (download) | 33 B | 2003-02-20 |
| nsr018.ecg (download) | 212.7 KB | 2003-02-13 |
| nsr018.hea (download) | 33 B | 2003-02-20 |
| nsr019.ecg (download) | 240.0 KB | 2003-02-13 |
| nsr019.hea (download) | 33 B | 2003-02-20 |
| nsr020.ecg (download) | 266.9 KB | 2003-02-13 |
| nsr020.hea (download) | 33 B | 2003-02-20 |
| nsr021.ecg (download) | 202.9 KB | 2003-02-13 |
| nsr021.hea (download) | 33 B | 2003-02-20 |
| nsr022.ecg (download) | 159.8 KB | 2003-02-13 |
| nsr022.hea (download) | 33 B | 2003-02-20 |
| nsr023.ecg (download) | 219.0 KB | 2003-02-13 |
| nsr023.hea (download) | 33 B | 2003-02-20 |
| nsr024.ecg (download) | 198.3 KB | 2003-02-13 |
| nsr024.hea (download) | 33 B | 2003-02-20 |
| nsr025.ecg (download) | 253.1 KB | 2003-02-13 |
| nsr025.hea (download) | 33 B | 2003-02-20 |
| nsr026.ecg (download) | 228.1 KB | 2003-02-13 |
| nsr026.hea (download) | 33 B | 2003-02-20 |
| nsr027.ecg (download) | 221.5 KB | 2003-02-13 |
| nsr027.hea (download) | 33 B | 2003-02-20 |
| nsr028.ecg (download) | 211.6 KB | 2003-02-13 |
| nsr028.hea (download) | 33 B | 2003-02-20 |
| nsr029.ecg (download) | 231.0 KB | 2003-02-13 |
| nsr029.hea (download) | 33 B | 2003-02-20 |
| nsr030.ecg (download) | 206.4 KB | 2003-02-13 |
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| nsr035.ecg (download) | 231.1 KB | 2003-02-13 |
| nsr035.hea (download) | 33 B | 2003-02-20 |
| nsr036.ecg (download) | 224.7 KB | 2003-02-13 |
| nsr036.hea (download) | 33 B | 2003-02-20 |
| nsr037.ecg (download) | 182.9 KB | 2003-02-13 |
| nsr037.hea (download) | 33 B | 2003-02-20 |
| nsr038.ecg (download) | 200.5 KB | 2003-02-13 |
| nsr038.hea (download) | 33 B | 2003-02-20 |
| nsr039.ecg (download) | 196.8 KB | 2003-02-13 |
| nsr039.hea (download) | 33 B | 2003-02-20 |
| nsr040.ecg (download) | 230.1 KB | 2003-02-13 |
| nsr040.hea (download) | 33 B | 2003-02-20 |
| nsr041.ecg (download) | 203.9 KB | 2003-02-13 |
| nsr041.hea (download) | 33 B | 2003-02-20 |
| nsr042.ecg (download) | 211.4 KB | 2003-02-13 |
| nsr042.hea (download) | 33 B | 2003-02-20 |
| nsr043.ecg (download) | 205.1 KB | 2003-02-13 |
| nsr043.hea (download) | 33 B | 2003-02-20 |
| nsr044.ecg (download) | 221.8 KB | 2003-02-13 |
| nsr044.hea (download) | 33 B | 2003-02-20 |
| nsr045.ecg (download) | 188.9 KB | 2003-02-13 |
| nsr045.hea (download) | 33 B | 2003-02-20 |
| nsr046.ecg (download) | 186.7 KB | 2003-02-13 |
| nsr046.hea (download) | 33 B | 2003-02-20 |
| nsr047.ecg (download) | 221.1 KB | 2003-02-13 |
| nsr047.hea (download) | 35 B | 2003-02-20 |
| nsr048.ecg (download) | 230.7 KB | 2003-02-13 |
| nsr048.hea (download) | 33 B | 2003-02-20 |
| nsr049.ecg (download) | 205.7 KB | 2003-02-13 |
| nsr049.hea (download) | 33 B | 2003-02-20 |
| nsr050.ecg (download) | 248.5 KB | 2003-02-13 |
| nsr050.hea (download) | 33 B | 2003-02-20 |
| nsr051.ecg (download) | 208.6 KB | 2003-02-13 |
| nsr051.hea (download) | 33 B | 2003-02-20 |
| nsr052.ecg (download) | 233.0 KB | 2003-02-13 |
| nsr052.hea (download) | 33 B | 2003-02-20 |
| nsr053.ecg (download) | 193.0 KB | 2003-02-13 |
| nsr053.hea (download) | 33 B | 2003-02-20 |
| nsr054.ecg (download) | 236.2 KB | 2003-02-13 |
| nsr054.hea (download) | 33 B | 2003-02-20 |