| Metabolically exaggerated cardiac reactions to acute psychological stress: the effects of resting blood pressure status and possible underlying mechanisms. | |
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MedLine Citation:
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PMID: 20541585 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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The study aimed to: confirm that acute stress elicits metabolically exaggerated increases in cardiac activity; test whether individuals with elevated resting blood pressure show more exaggerated cardiac reactions to stress than those who are clearly normotensive; and explore the underlying mechanisms. Cardiovascular activity and oxygen consumption were measured pre-, during, and post-mental stress, and during graded sub-maximal cycling exercise in 11 young men with moderately elevated resting blood pressure and 11 normotensives. Stress provoked increases in cardiac output that were much greater than would be expected from contemporary levels of oxygen consumption. Exaggerated cardiac reactions were larger in the relatively elevated blood pressure group. They also had greater reductions in total peripheral resistance, but not heart rate variability, implying that their more exaggerated cardiac reactions reflected greater beta-adrenergic activation. |
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Authors:
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George M Balanos; Anna C Phillips; Michael P Frenneaux; David McIntyre; Christos Lykidis; Harry S Griffin; Douglas Carroll |
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Publication Detail:
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Type: Journal Article Date: 2010-06-10 |
Journal Detail:
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Title: Biological psychology Volume: 85 ISSN: 1873-6246 ISO Abbreviation: Biol Psychol Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-08-02 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0375566 Medline TA: Biol Psychol Country: Netherlands |
Other Details:
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Languages: eng Pagination: 104-11 Citation Subset: IM |
Copyright Information:
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Copyright (c) 2010 Elsevier B.V. All rights reserved. |
Affiliation:
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School of Sport and Exercise Sciences, University of Birmingham, Edgbaston, Birmingham, England, United Kingdom. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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