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- Title
P-53: Effects of diaphragmatic breathing on ambulatory blood pressure and heart rate.
- Authors
Lee, John S.; Lee, Jong Y.; Halberg, Franz
- Abstract
Psychological procedures, such as self-hypnosis in the form of autogenic training, have been proposed for correcting a deviant, e.g., high blood pressure (BP). In view of the overwhelming evidence for the circadian (CD) stage dependence (SD) of any treatment effects, the CD-SD of the effects of deep diaphragmatic breathing (DB) on BP and heart rate (HR) were explored in data from a clinically healthy normotensive subject who, following 3 weeks of ambulatory monitoring as a reference standard, measured BP and HR with a manual monitor at 1-min intervals for 5 min before and after 3 DBs for about 2 weeks at about 2-h interval while awake. The analyses started with the fit of a 24-hour and a 168-hour cosine curve by the cosinor method to 3 weeks of data and revealed a CD rhythm for BP and HR of high statistical significance (SS) (P<0.001 in each case). The peak hours were in the afternoon. Some about-weekly circaseptan (CP) BP rhythms and 12-hour (circasemidian) components were also SS. DB was found to reduce systolic (S) BP; the effect was CD-dependent. Overall, SBP decreased by 5.9 ± 0.8 mmHg (P<0.001) and diastolic (D) BP by 1.4 ± 0.8 mmHg (P<0.005), while heart rate remained at about the same average. According to the fit of a cosine curve to unequally spaced data that were lacking during sleep, the CD response peaked in the afternoon 2-3 hours before the peaks in SBP and DBP found in the reference data in the same subject. There was a decrease of 5-10% in SBP around the weekend (Friday through Sunday). Data on others may strengthen the results for optimizing by the marker rhythm BP and/or HR the best times for DB and other procedures. The personalized best time for people on different work/rest schedules for relaxation may be several hours before their BP has reached its highest point in the 24-hour span.Am J Hypertens (2001) 14, 47A-47A; doi:S0895-7061(01)01531-X
- Publication
American Journal of Hypertension, 2001, Vol 14, p47A
- ISSN
0895-7061
- Publication type
Article
- DOI
10.1016/S0895-7061(01)01531-X