Key result
Type D personality was associated with dysfunctional cardiovascular reactivity to acute stress, characterized by blunted total peripheral resistance and slower stroke volume recovery.
Why the study?
Maladaptive sympathetic arousal is suggested as a potential mechanism linking Type D personality to poor physical health, but findings are inconsistent and mostly focus on basic cardiovascular parameters.
Does a multitasking stressor elicit different cardiovascular, haemodynamic, and salivary alpha amylase reactivity in healthy adults with Type D personality compared to those without?
Cross-Sectional (n=75)
Does a multitasking stressor elicit different cardiovascular, haemodynamic, and salivary alpha amylase reactivity in healthy adults with Type D personality compared to those without?
Type D personality is associated with dysregulated sympathetic reactivity to acute stress, characterized by a maladaptive haemodynamic profile.
Answers are grounded in this paper and cite their sources.
Examining sAA and haemodynamics in Type D may clarify sympathetic mechanisms; leaves open whether reactivity differs clinically.
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.
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Allen et al. (2019) conducted a cross-sectional in Healthy adults (n=75). Type D personality vs. Non-Type D personality was evaluated on Cardiovascular, haemodynamic, and salivary alpha amylase reactivity to acute stress. Type D personality was associated with dysfunctional cardiovascular reactivity to acute stress, characterized by blunted total peripheral resistance and slower stroke volume recovery.
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