Efficient and cost‐effective estimation of the influence of respiratory variables on respiratory sinus arrhythmia
- 16 August 2010
- journal article
- Published by Wiley in Psychophysiology
- Vol. 48 (4), 488-494
- https://doi.org/10.1111/j.1469-8986.2010.01086.x
Abstract
Researchers are interested in respiratory sinus arrhythmia (RSA) as an index of cardiac vagal activity. Yet, debate exists about how to account for respiratory influences on quantitative indices of RSA. T. Ritz, M. Thons, and B. Dahme (2001) developed a within‐individual correction procedure by which the effects of respiration on RSA may be estimated using regression models. We replicated their procedure substituting a spectral high‐frequency measure of RSA for a time‐domain statistic and a respiratory belt's relative measure of tidal volume for the direct assessment provided by a pneumotachograph. The standardized slopes from the respiratory belt and pneumotachography‐derived regression equations (estimated across a 6‐min paced breathing protocol) were positively correlated (r=0.93, p<.001); correlations were similar across 2‐ and 4‐min time courses parsed from the 6‐min protocol. Our results offer methodological alternatives to the research community.Keywords
This publication has 27 references indexed in Scilit:
- Studying noninvasive indices of vagal control: The need for respiratory control and the problem of target specificityBiological Psychology, 2008
- Toward understanding respiratory sinus arrhythmia: Relations to cardiac vagal tone, evolution and biobehavioral functionsBiological Psychology, 2006
- The many metrics of cardiac chronotropy: A pragmatic primer and a brief comparison of metricsBiological Psychology, 2006
- Implementation and Interpretation of Respiratory Sinus Arrhythmia Measures in Psychosomatic Medicine: Practice Against Better Evidence?Psychosomatic Medicine, 2006
- Intraindividual validation of heart rate variability indexes to measure vagal effects on heartsAmerican Journal of Physiology-Heart and Circulatory Physiology, 2006
- Modulation of respiratory sinus arrhythmia by respiration rate and volume: Stability across posture and volume variationsPsychophysiology, 2001
- Heart rate variability: Origins, methods, and interpretive caveatsPsychophysiology, 1997
- Respiratory sinus arrhythmia, cardiac vagal tone, and respiration: Within‐ and between‐individual relationsPsychophysiology, 1993
- Prediction of Tonic Parasympathetic Cardiac Control Using Respiratory Sinus Arrhythmia: The Need for Respiratory ControlPsychophysiology, 1991
- Paced Respiratory Sinus Arrhythmia as an Index of Cardiac Parasympathetic Tone During Varying Behavioral TasksPsychophysiology, 1990