| Reliability of noninvasive methods to measure cardiac autonomic function. | |
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MedLine Citation:
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PMID: 9677436 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Cardiac autonomic modulation was examined in 10 healthy subjects (mean age = 27.8 +/- 1.7) at rest (paced breathing at 12 and 16 breaths/min) and during a submaximal cycle ergometer exercise test. Heart rate variability (HRV) spectral parameters and spontaneous baroreflex (SBR) function variables showed no significant differences between mean values for any of the testing conditions. Spectral parameters and SBR function did not differ significantly between the resting conditions. Significant reliability coefficients (r = 0.59-0.73) were observed for all spectral parameters except low frequency power (r = 0.22) during 12 breaths/min, with moderately lower values during 16 breaths/min (r = 0.10-0.75) and exercise (r = 0.20-0.89). Significant reliability coefficients were observed for baroreflex sensitivity at 12 (r = 0.83) and 16 (r = 0.92) breaths/min. It was concluded that at rest, HRV spectral and SBR analyses are reliable methods for studying cardiac autonomic balance. |
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Authors:
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C E Amara; L A Wolfe |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: Canadian journal of applied physiology = Revue canadienne de physiologie appliquée Volume: 23 ISSN: 1066-7814 ISO Abbreviation: Can J Appl Physiol Publication Date: 1998 Aug |
Date Detail:
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Created Date: 1998-10-05 Completed Date: 1998-10-05 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 9306274 Medline TA: Can J Appl Physiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 396-408 Citation Subset: IM; S |
Affiliation:
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School of Physical and Health Education, Queen's University, Kingston, ON, Canada. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Analysis of Variance Autonomic Nervous System / physiology* Baroreflex / physiology Blood Pressure / physiology Exercise Test Female Heart Conduction System / physiology* Heart Rate / physiology Humans Male Monitoring, Physiologic* Oxygen Consumption / physiology Physical Exertion / physiology Regression Analysis Reproducibility of Results Respiration / physiology Rest / physiology Signal Processing, Computer-Assisted Tidal Volume / physiology |
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