Psychosomatic Medicine

Skip Navigation LinksHome > July/August 2006 - Volume 68 - Issue 4 > Implementation and Interpretation of Respiratory Sinus Arrhy...
Psychosomatic Medicine:
doi: 10.1097/01.psy.0000228010.96408.ed

Implementation and Interpretation of Respiratory Sinus Arrhythmia Measures in Psychosomatic Medicine: Practice Against Better Evidence?

Ritz, Thomas PhD; Dahme, Bernhard PhD

Collapse Box


Respiratory sinus arrhythmia (RSA) or high-frequency heart rate variability has been widely used as a noninvasive measure of cardiac vagal tone. However, their dependency on both respiration rate and tidal volume is largely ignored. Only a minority of studies published in Psychosomatic Medicine in recent years has implemented precautions for controlling respiration rate in RSA measures, and tidal volume effects were only rarely addressed. We discuss methodologic issues related to respiratory control methods and present data that demonstrate that both respiration rate and tidal volume contribute substantially to the within-individual RSA variance under conditions of variable breathing, with tidal volume contributing up to one third beyond respiration rate. Finally, we outline a respiratory control method for the time-domain index of RSA and review research pertaining to its reliability, validity, and experimental application.

HRV = heart rate variability; pCO2 = partial pressure of carbon dioxide; RSA = respiratory sinus arrhythmia; RR = respiration rate; TTOT = total respiratory cycle time; VT = tidal volume.

Copyright © 2006 by American Psychosomatic Society

You currently do not have access to this article.

You may need to:

Note: If your society membership provides for full-access to this article, you may need to login on your society’s web site first.


Article Tools


Article Level Metrics

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.