Koch, Horst Josef and Raschka, Christoph and Banzer, Winfried (1999) Diurnal variation of ECG intervals and R or T amplitudes in healthy male subjects assessed by means of spectral and cosinor analysis. JAPANESE HEART JOURNAL, 40 (1). pp. 45-53. ISSN 0021-4868,
Full text not available from this repository.Abstract
Twelve lead standard ECGs 35 healthy male volunteers, recorded from 08.00 H up to 01.00 H, were analysed retrospectively in order to investigate primarily the diurnal changes in vital sign measurements, ECG interval durations (PQ, QRS, QTc) and R wave as well as T wave amplitudes. Data were analysed descriptively and by means of ANOVA, spectral analysis and cosinor models. ANOVA revealed significant variations for vital sign parameters and the QTc interval, although remarkable variation in all ECG parameters was observed. T wave amplitudes in particular showed marked alterations, with changes up to 40%. Transient maxima of median T wave amplitudes and QTc interval duration were found at 12.00 H and 14.00 H, respectively. R wave amplitudes and PQ duration revealed lower values in the afternoon. Although there was remarkable interindividual variability, ultradian rhythmic activity of ECG parameters was confirmed by spectral analysis and cosinor models based on population data.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ; ECG; diurnal variation; healthy volunteers; ECG intervals; R and T wave amplitudes; ANOVA; time series analysis |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Psychiatrie und Psychotherapie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 29 Nov 2022 14:12 |
| Last Modified: | 29 Nov 2022 14:12 |
| URI: | https://pred.uni-regensburg.de/id/eprint/48662 |
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