An experimental investigation into cardiovascular, haemodynamic and salivary alpha amylase reactivity to acute stress in Type D individuals

Sarah F. Allen, Mark A. Wetherell, Michael A. Smith

Research output: Contribution to journalArticle

Abstract

Type D personality is characterized by increased social inhibition and negative affectivity. Research demonstrates associations between Type D and poor physical health. Maladaptive sympathetic arousal is suggested as a potential mechanism, however, findings are inconsistent and studies mainly focus on basic cardiovascular parameters. The current study examines cardiovascular and haemodynamic parameters in addition to salivary alpha amylase (sAA) as markers of sympathetic stress reactivity in Type D individuals. Healthy adults (N = 75; 33 Type D; aged 18–42; 64% female) completed a multitasking stressor while continuous beat-to-beat cardiovascular function was measured. Saliva samples were obtained at baseline, pre-task, post-task, +10 min and +20 min post-task. Type Ds exhibited dysfunctional cardiovascular reactivity, characterized by blunted total peripheral resistance, slower stroke volume recovery and potentially unhealthy changes in haemodynamic profile. Alpha amylase reactivity was evident, but group differences were not significant. Findings indicate dysregulated sympathetic reactivity in Type D individuals, exemplified by a maladaptive haemodynamic profile.

Original languageEnglish
Pages (from-to)428-435
Number of pages8
JournalStress
Volume22
Issue number4
DOIs
Publication statusPublished - 4 Jul 2019

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Salivary alpha-Amylases
Hemodynamics
Type D Personality
alpha-Amylases
Arousal
Saliva
Vascular Resistance
Stroke Volume
Health
Research

Cite this

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An experimental investigation into cardiovascular, haemodynamic and salivary alpha amylase reactivity to acute stress in Type D individuals. / Allen, Sarah F.; Wetherell, Mark A.; Smith, Michael A.

In: Stress, Vol. 22, No. 4, 04.07.2019, p. 428-435.

Research output: Contribution to journalArticle

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