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Metabolically exaggerated cardiac reactions to acute psychological stress: The effects of resting blood pressure status and possible underlying mechanisms

Balanos, George M. and Phillips, Anna C. and Frenneaux, Michael P. and McIntyre, David and Lykidis, Christos and Griffin, Harry S. and Carroll, Douglas (2010) Metabolically exaggerated cardiac reactions to acute psychological stress: The effects of resting blood pressure status and possible underlying mechanisms. Biological Psychology, 85 (1). pp. 104-111. ISSN 03010511

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URL of Published Version: http://dx.doi.org/10.1016/j.biopsycho.2010.06.001

Identification Number/DOI: doi:10.1016/j.biopsycho.2010.06.001

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 submaximal 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 β-adrenergic activation.

Type of Work:Article
Date:2010 (Publication)
School/Faculty:Colleges (2008 onwards) > College of Life & Environmental Sciences
Department:School of Sport and Exercise Sciences
Subjects:BF Psychology
GV Recreation Leisure
Institution:University of Birmingham
Copyright Holders:Elsevier
ID Code:1219
Refereed:YES
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