Document Detail

Effects of paced respiration on heart period and heart period variability.
MedLine Citation:
PMID:  10860408     Owner:  NLM     Status:  MEDLINE    
The present study investigated psychophysiological responses to paced respiration of different frequencies. Twenty men and 20 women (mean age: 24.3 years) underwent five breathing conditions (paced with 0.15 Hz, 0.20 Hz, 0.25 Hz, 0.30 Hz, and unpaced), each lasting 5 min. As dependent physiological measures heart period, and different heart period variability (HPV) parameters were assessed. Psychological variables consisted of mood estimates as well as rated accuracy and effort to follow the pacing rhythm. HPV decreased with higher breathing frequencies, under paced and unpaced conditions, whereas mood ratings did not change. Subjects indicated more effort and less accuracy in following the pacing signal, the more its frequency differed from their spontaneous breathing frequency. The comparison of a spontaneous breathing condition with a frequency-matched paced condition revealed that pacing per se provoked a reduction in heart period. Because this decrease was not accompanied by changes in any of the HPV frequency components, their validity as measures of autonomic control needs to be questioned.
R Stark; A Schienle; B Walter; D Vaitl
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Publication Detail:
Type:  Clinical Trial; Journal Article    
Journal Detail:
Title:  Psychophysiology     Volume:  37     ISSN:  0048-5772     ISO Abbreviation:  Psychophysiology     Publication Date:  2000 May 
Date Detail:
Created Date:  2000-07-12     Completed Date:  2000-07-12     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0142657     Medline TA:  Psychophysiology     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  302-9     Citation Subset:  IM    
Department of Clinical and Physiological Psychology, University of Giessen, Germany. Rudolf.Stark@Psychol.Uni-Giessen.De
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MeSH Terms
Heart / physiology*
Heart Rate / physiology*
Respiratory Mechanics / physiology*
Sex Characteristics

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