Anger management style moderates effects of emotion suppression during initial stress on pain and cardiovascular responses during subsequent pain-induction

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Abstract
Background: Suppression of emotion, anger in particular, may be linked to heightened pain intensity during a subsequent painful event, but it is not clear whether an individual’s anger management style (trait anger-out or trait anger-in) moderates effects on pain intensity and cardiovascular responses during pain.Purpose: To determine whether (a) trait anger-out and/or trait anger-in moderate effects of Emotion-Induction (anger, anxiety)×Emotion Suppression (nonsuppression, experiential, expressive) manipulations during mental arithmetic on pain intensity and cardiovascular responses during and following a cold pressor pain task, such that “mismatch” relationships emerge (preferred anger management style is discrepant from situation demands), and (b) general emotional expressivity accounts for these effects.Method: Healthy nonpatients (N=187) were assigned to 1 of 6 conditions for a mental arithmetic task. Cells were formed by crossing 2 Emotion-Induction (anxiety, anger)×3 Emotion Suppression (non-suppression, experiential, expressive) conditions. After mental arithmetic, participants underwent a cold pressor followed by recovery. Systolic blood pressure (SBP), diastolic BP (DBP), heart rate (HR), and pain intensity ratings were recorded. Spielberger Anger Expression Inventory tapped anger management style.Results: General Linear Model procedures tested Emotion-Induction×Emotion Suppression×Anger-Out or Anger-In (continuous)×Period (baseline, cold pressor, recovery) effects on pain intensity, SBP, DBP, and HR. A 4-way interaction emerged for pain intensity: Only for those in the anger-induction/experiential suppression condition, anger-out was related significantly to pain recovery. Three-way interactions emerged for SBP and DBP: Only for those in expressive suppression condition, anger-out was related significantly to SBP during and following cold pressor and to DBP following cold pressor. General emotion expressivity did not account for anger-out effects.Conclusions: A mismatch situation may apply for high anger-out people who suppress emotion in a certain circumstance and thus may suffer greater discomfort and physiological responsiveness to subsequent pain than high anger-out people not having to suppress.