Type D personality is associated with lower cardiovascular reactivity to stress in women

Objective: This study examines if Type D personality is (1) associated with cardiovascular  reactivity to acute stress in a healthy sample, and (2) has predictive utility for cardiovascular  reactivity above its individual subcomponents (negative affect; NA, social inhibition; SI), as  well as anxiety and depression. 

Design: Undergraduate students (n = 173) competed a standardised cardiovascular reactivity  experimental protocol consisting of resting baseline and stressor phase (mental arithmetic),  with systolic blood pressure (SBP), diastolic blood pressure (DBP) and heart rate (HR)  monitored throughout. 

Main Outcome Measures: The main outcome measures were cardiovascular reactivity to the stressor, which was operationalised as the difference between resting baseline and the  stressor phase for SBP, DBP and HR.

Results: The continuous Type D interaction term (NA × SI) significantly predicted lower  SBP reactivity to the mental arithmetic stressor amongst women, independent of NA, SI and  confounding variables. Moreover, this remained significant after adjustment for anxiety and  depressive symptoms. Depression, NA and SI were also significant independent predictors of  SBP reactivity amongst women. Conclusion: Type D personality is associated with lower SBP reactivity to acute stress in  women, which may be indicative of blunted cardiovascular reactivity. This association was independent of NA, SI, Anxiety and Depression.