Ambulatory measurement of the ECG T-wave amplitude.
In: Psychophysiology, Jg. 52 (2015-02-01), Heft 2, S. 225-237
Online
academicJournal
Zugriff:
Ambulatory recording of the preejection period ( PEP) can be used to measure changes in cardiac sympathetic nervous system ( SNS) activity under naturalistic conditions. Here, we test the ECG T-wave amplitude ( TWA) as an alternative measure, using 24-h ambulatory monitoring of PEP and TWA in a sample of 564 healthy adults. The TWA showed a decrease in response to mental stress and a monotonic decrease from nighttime sleep to daytime sitting and more physically active behaviors. Within-participant changes in TWA were correlated with changes in the PEP across the standardized stressors ( r = .42) and the unstandardized naturalistic conditions (mean r = .35). Partialling out changes in heart rate and vagal effects attenuated these correlations, but they remained significant. Ambulatory TWA cannot replace PEP, but simultaneous recording of TWA and PEP provides a more comprehensive picture of changes in cardiac SNS activity in real-life settings. [ABSTRACT FROM AUTHOR]
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Ambulatory measurement of the ECG T-wave amplitude.
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Autor/in / Beteiligte Person: | Lien, René ; Neijts, Melanie ; Willemsen, Gonneke ; de Geus, Eco J. C. |
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Zeitschrift: | Psychophysiology, Jg. 52 (2015-02-01), Heft 2, S. 225-237 |
Veröffentlichung: | 2015 |
Medientyp: | academicJournal |
ISSN: | 0048-5772 (print) |
DOI: | 10.1111/psyp.12300 |
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