Classification of individual differences in cardiovascular responsivity: The contribution of reactor type controlling for race and gender

Maria M. Llabre, Beth R. Klein, Patrice G. Saab, Judith B. McCalla, Neil Schneiderman

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

Classification of 150 normotensive or mildly hypertensive men and women into myocardial, vascular, or mild reactors was accomplished using a regression-based approach. The method was based on the participants' cardiac output (CO) and total peripheral resistance (TPR) reactivity to the speech presentation task. This task purportedly can elicit both myocardial and vascular responses. Cut-scores were based on the y-intercept from the linear regression of the CO reactivity on TPR reactivity and vice versa. A greater percentage of Black men were classified as vascular responders as compared to Black women and White participants. Groups were found to differ on cardiovascular reactivity to the speech preparation, cold pressor, and mirror tracing tasks in predictable ways, after controlling for gender and ethnicity. Groups were also differentiated by ambulatory blood pressure and hypertensive status. The study supports the classification of homogeneous groups of participants based on the relative extent to which myocardial or vascular mechanisms dominate the reactivity to stress.

Original languageEnglish (US)
Pages (from-to)213-229
Number of pages17
JournalInternational journal of behavioral medicine
Volume5
Issue number3
DOIs
StatePublished - Dec 1 1998

Keywords

  • Cardiovascular reactivity
  • Individual response stereotype
  • Reactor types

ASJC Scopus subject areas

  • Psychology(all)
  • Clinical Psychology

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