Journal
BIOLOGICAL PSYCHOLOGY
Volume 96, Issue -, Pages 20-27Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.biopsycho.2013.11.005
Keywords
Worry; Blood pressure; Baroreflex sensitivity; Defense reflex
Funding
- Spanish Ministry of Economy and Competitiveness [PSI2008-04372, PSI2012-33509]
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This study analyzes differences in blood pressure ( BP) and baroreflex sensitivity (BRS) in relation to trait worry. 36 high worry and 21 low worry females were selected from scores on the Penn State Worry Questionnaire. Cardiovascular parameters were obtained during rest, a self-induced worry period, and defense reflex to intense auditory stimulation. Low worry participants exhibited greater BP during baseline and greater BRS both during baseline and the self-induced worry period than high worry participants. During the defense reflex, low worries present a greater increase in BP. It is concluded that low proneness to worry is associated with greater BP and BRS. Increases in BP during aversive stimulation activated a negative feedback mechanism to inhibit distress and emotional reactivity to negative stimulation. These results support the BP-emotional dampening hypothesis and suggest that the baroreflex can be a relevant mechanism in mediating this effect. (C) 2013 Elsevier B.V. All rights reserved.
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