Document Detail

Effect of relaxation training on cardiac parasympathetic tone.
MedLine Citation:
PMID:  8008785     Owner:  NLM     Status:  MEDLINE    
To examine the hypothesis that the relaxation response is associated with an increase in cardiac parasympathetic tone, the frequency components of heart rate variability during relaxation training were investigated in 16 college students. Electrocardiograms and pneumograms were recorded during a 5-min baseline period followed by three successive 5-min sessions of the autogenic training (relaxation) or by the same periods of quiet rest (control), while subjects breathed synchronously with a visual pacemaker (0.25 Hz). Although neither the magnitude nor the frequency of respiration showed a significant difference between relaxation and control, the amplitude of the high-frequency component of heart rate variability increased only during relaxation (p = .008). There was no significant difference in the ratio of the low-frequency (0.04-0.15 Hz) to the high-frequency amplitudes. The increased high-frequency amplitude without changes in the respiratory parameters indicates enhanced cardiac parasympathetic tone. Thus, our results support the initial hypothesis of this study. Enhanced cardiac parasympathetic tone may explain an important mechanism underlying the beneficial effect of the relaxation response.
M Sakakibara; S Takeuchi; J Hayano
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Psychophysiology     Volume:  31     ISSN:  0048-5772     ISO Abbreviation:  Psychophysiology     Publication Date:  1994 May 
Date Detail:
Created Date:  1994-07-15     Completed Date:  1994-07-15     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0142657     Medline TA:  Psychophysiology     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  223-8     Citation Subset:  IM    
Department of Psychology, Aichi Gakuin University, Japan.
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MeSH Terms
Arousal / physiology*
Autogenic Training
Electrocardiography / instrumentation
Heart Rate / physiology*
Parasympathetic Nervous System / physiology*
Relaxation Therapy*
Respiration / physiology
Signal Processing, Computer-Assisted / instrumentation

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