Abstract:
:A series of meta-analyses was undertaken to determine the contributions of sympathetic and parasympathetic activation to cardiovascular stress reactivity. A literature search yielded 186 studies of sufficient quality that measured indices of sympathetic (n = 113) and/or parasympathetic activity (n = 73). A range of psychological stressors perturbed blood pressure and heart rate. There were comparable aggregate effects for sympathetic activation, as indexed by increased plasma epinephrine and norepinephrine, and shortened pre-ejection period and parasympathetic deactivation, as indexed by heart rate variability measures. Effect sizes varied with stress task, sex, and age. In contrast to alpha-adrenergic blockade, beta-blockade attenuated cardiovascular reactivity. Cardiovascular reactivity to acute psychological stress would appear to reflect both beta-adrenergic activation and vagal withdrawal to a largely equal extent.
journal_name
Psychophysiologyjournal_title
Psychophysiologyauthors
Brindle RC,Ginty AT,Phillips AC,Carroll Ddoi
10.1111/psyp.12248subject
Has Abstractpub_date
2014-10-01 00:00:00pages
964-76issue
10eissn
0048-5772issn
1540-5958journal_volume
51pub_type
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