Heart rate time series for 5 different groups of healthy subjects can be found in text form in the subdirectories of this one:
- chi: Chi meditation group. There are two time series for each of the eight subjects (C1, C2, ... C8), denoted by record names with the suffix pre for the pre-meditation period and med for the meditation period. Each series is about one hour in duration.
- yoga: Kundalini Yoga meditation group. As for the Chi group, there are pre and med series for each of the four subjects (Y1, Y2, Y3, Y4). Durations range from 17 to 47 minutes.
- normal: Spontaneous breathing group (N1, N2, ... N11). Volunteers were recorded while sleeping. Durations are 6 hours each, except for N3 (4.6 hours).
- metron: Metronomic breathing group (M1, M2, ... M14). Volunteers were recorded while supine and breathing at a fixed rate of 0.25 Hz for 10 minutes.
- ironman: Elite athletes (I1, I2, ... I9). Subjects participated in the Ironman Triathlon; the recordings were obtained during sleeping hours before the event. Durations range from 1 to 1.7 hours.
A detailed description of these 5 groups can be found in the original article (reference below).
For each recording, in addition to the text file, there are (in this directory) a binary annotation file (with suffix .qrs) and a text header file (with suffix .hea), written in the standard formats used for other PhysioBank databases. Each set of three files has a common record name composed of a group identifier and a subject identifier (number). Although all beats are marked normal in these recordings, there may be small numbers of abnormal beats.
The text files contain the same information as in the annotation and header files, and may be reproduced from the annotation and header files using the program ihr, available here. The first column in each text file is the elapsed time since the beginning of the recording (in seconds), and the second column is the instantaneous heart rate (in beats/minute). Note that these recordings generally contain lengthy unannotated intervals preceding the first annotation.
Reference
Peng C-K, Mietus JE, Liu Y, Khalsa G, Douglas PS, Benson H, Goldberger AL. Exaggerated Heart Rate Oscillations During Two Meditation Techniques. International Journal of Cardiology 70:101-107, 1999.
Name Last modified Size Description
Parent Directory - C1med.hea 20-Jan-2000 16:10 15 header file C1med.qrs 20-Jan-2000 16:10 7.9K unaudited annotations C2med.hea 20-Jan-2000 16:10 15 header file C2med.qrs 20-Jan-2000 16:10 8.5K unaudited annotations C3med.hea 20-Jan-2000 16:11 15 header file C3med.qrs 20-Jan-2000 16:11 7.4K unaudited annotations C4med.hea 20-Jan-2000 16:11 15 header file C4med.qrs 20-Jan-2000 16:11 7.2K unaudited annotations C5med.hea 20-Jan-2000 16:11 15 header file C5med.qrs 20-Jan-2000 16:11 7.6K unaudited annotations C6med.hea 20-Jan-2000 16:11 15 header file C6med.qrs 20-Jan-2000 16:11 7.8K unaudited annotations C7med.hea 20-Jan-2000 16:11 15 header file C7med.qrs 20-Jan-2000 16:11 13K unaudited annotations C8med.hea 20-Jan-2000 16:11 15 header file C8med.qrs 20-Jan-2000 16:11 9.9K unaudited annotations C1pre.hea 20-Jan-2000 16:11 15 header file C1pre.qrs 20-Jan-2000 16:11 7.9K unaudited annotations C2pre.hea 20-Jan-2000 16:11 15 header file C2pre.qrs 20-Jan-2000 16:11 9.3K unaudited annotations C3pre.hea 20-Jan-2000 16:11 15 header file C3pre.qrs 20-Jan-2000 16:11 9.3K unaudited annotations C4pre.hea 20-Jan-2000 16:11 15 header file C4pre.qrs 20-Jan-2000 16:11 9.3K unaudited annotations C5pre.hea 20-Jan-2000 16:11 15 header file C5pre.qrs 20-Jan-2000 16:11 8.8K unaudited annotations C6pre.hea 20-Jan-2000 16:12 15 header file C6pre.qrs 20-Jan-2000 16:12 8.7K unaudited annotations C7pre.hea 20-Jan-2000 16:12 15 header file C7pre.qrs 20-Jan-2000 16:12 9.5K unaudited annotations C8pre.hea 20-Jan-2000 16:12 15 header file C8pre.qrs 20-Jan-2000 16:12 9.9K unaudited annotations I1.hea 20-Jan-2000 16:12 12 header file I1.qrs 20-Jan-2000 16:12 8.2K unaudited annotations I2.hea 20-Jan-2000 16:12 12 header file I2.qrs 20-Jan-2000 16:12 8.2K unaudited annotations I3.hea 20-Jan-2000 16:13 12 header file I3.qrs 20-Jan-2000 16:13 8.2K unaudited annotations I4.hea 20-Jan-2000 16:13 12 header file I4.qrs 20-Jan-2000 16:13 8.2K unaudited annotations I5.hea 20-Jan-2000 16:13 12 header file I5.qrs 20-Jan-2000 16:13 8.2K unaudited annotations I6.hea 20-Jan-2000 16:13 12 header file I6.qrs 20-Jan-2000 16:13 8.2K unaudited annotations I7.hea 20-Jan-2000 16:13 12 header file I7.qrs 20-Jan-2000 16:13 8.2K unaudited annotations I8.hea 20-Jan-2000 16:13 12 header file I8.qrs 20-Jan-2000 16:13 8.2K unaudited annotations I9.hea 20-Jan-2000 16:13 12 header file I9.qrs 20-Jan-2000 16:13 8.2K unaudited annotations M1.hea 20-Jan-2000 16:15 12 header file M1.qrs 20-Jan-2000 16:15 1.5K unaudited annotations M2.hea 20-Jan-2000 16:15 12 header file M2.qrs 20-Jan-2000 16:15 1.3K unaudited annotations M3.hea 20-Jan-2000 16:15 12 header file M3.qrs 20-Jan-2000 16:15 1.0K unaudited annotations M4.hea 20-Jan-2000 16:15 12 header file M4.qrs 20-Jan-2000 16:15 1.1K unaudited annotations M5.hea 20-Jan-2000 16:15 12 header file M5.qrs 20-Jan-2000 16:15 1.0K unaudited annotations M6.hea 20-Jan-2000 16:15 12 header file M6.qrs 20-Jan-2000 16:15 1.2K unaudited annotations M7.hea 20-Jan-2000 16:15 12 header file M7.qrs 20-Jan-2000 16:15 940 unaudited annotations M8.hea 20-Jan-2000 16:15 12 header file M8.qrs 20-Jan-2000 16:15 1.5K unaudited annotations M9.hea 20-Jan-2000 16:15 12 header file M9.qrs 20-Jan-2000 16:15 1.2K unaudited annotations M10.hea 20-Jan-2000 16:16 13 header file M10.qrs 20-Jan-2000 16:16 1.3K unaudited annotations M11.hea 20-Jan-2000 16:16 13 header file M11.qrs 20-Jan-2000 16:16 1.3K unaudited annotations M12.hea 20-Jan-2000 16:16 13 header file M12.qrs 20-Jan-2000 16:16 1.4K unaudited annotations M13.hea 20-Jan-2000 16:16 13 header file M13.qrs 20-Jan-2000 16:16 1.1K unaudited annotations M14.hea 20-Jan-2000 16:16 13 header file M14.qrs 20-Jan-2000 16:16 1.2K unaudited annotations N1.hea 20-Jan-2000 16:16 12 header file N1.qrs 20-Jan-2000 16:16 42K unaudited annotations N2.hea 20-Jan-2000 16:16 12 header file N2.qrs 20-Jan-2000 16:16 42K unaudited annotations N3.hea 20-Jan-2000 16:17 12 header file N3.qrs 20-Jan-2000 16:17 33K unaudited annotations N4.hea 20-Jan-2000 16:17 12 header file N4.qrs 20-Jan-2000 16:17 49K unaudited annotations N5.hea 20-Jan-2000 16:17 12 header file N5.qrs 20-Jan-2000 16:17 33K unaudited annotations N6.hea 20-Jan-2000 16:17 12 header file N6.qrs 20-Jan-2000 16:17 45K unaudited annotations N7.hea 20-Jan-2000 16:17 12 header file N7.qrs 20-Jan-2000 16:17 39K unaudited annotations N8.hea 20-Jan-2000 16:17 12 header file N8.qrs 20-Jan-2000 16:17 50K unaudited annotations N9.hea 20-Jan-2000 16:17 12 header file N9.qrs 20-Jan-2000 16:17 53K unaudited annotations N10.hea 20-Jan-2000 16:17 13 header file N10.qrs 20-Jan-2000 16:17 53K unaudited annotations N11.hea 20-Jan-2000 16:17 13 header file N11.qrs 20-Jan-2000 16:17 42K unaudited annotations Y1med.hea 20-Jan-2000 16:18 15 header file Y1med.qrs 20-Jan-2000 16:18 2.0K unaudited annotations Y2med.hea 20-Jan-2000 16:18 15 header file Y2med.qrs 20-Jan-2000 16:18 2.2K unaudited annotations Y3med.hea 20-Jan-2000 16:18 15 header file Y3med.qrs 20-Jan-2000 16:18 1.8K unaudited annotations Y4med.hea 20-Jan-2000 16:18 15 header file Y4med.qrs 20-Jan-2000 16:18 1.8K unaudited annotations Y1pre.hea 20-Jan-2000 16:18 15 header file Y1pre.qrs 20-Jan-2000 16:18 1.1K unaudited annotations Y2pre.hea 20-Jan-2000 16:18 15 header file Y2pre.qrs 20-Jan-2000 16:18 1.4K unaudited annotations Y3pre.hea 20-Jan-2000 16:18 15 header file Y3pre.qrs 20-Jan-2000 16:18 1.4K unaudited annotations Y4pre.hea 20-Jan-2000 16:18 15 header file Y4pre.qrs 20-Jan-2000 16:18 896 unaudited annotations ANNOTATORS 14-Oct-2000 04:37 58 list of annotators chi/ 15-Jan-2001 21:17 - ironman/ 15-Jan-2001 21:20 - metron/ 15-Jan-2001 21:20 - normal/ 15-Jan-2001 21:21 - yoga/ 15-Jan-2001 21:21 - RECORDS 25-Feb-2012 09:21 253 list of record names DOI 21-Sep-2015 19:00 19 local.css 28-Oct-2015 22:53 3.1K
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