Mood states and impedance cardiography-derived hemodynamics

Objective: This exploratory study investigated the relation between psychol ogical mood states and hemodynamic variables obtained at rest. Methods: We measured resting hemodynamic variables using impedance cardiography, blood pressure, heart rate and the Profile of Mood States (POMS) in 71 participan ts. Results: Mood states were not significantly associated with heart rate, systolic, diastolic, or mean arterial pressure. In comparison with these b asic measures of physiology, a number of impedance derived measures of hemo dynamics were associated with mood states. Log stroke volume was negatively correlated with POMS tension-anxiety (r = -.319, p = .009) and fatigue-ine rtia (r = -.316 p = .009). Log cardiac output was negatively associated wit h fatigue-inertia (r = -.346 p < .01). Log total peripheral vascular resist ance was positively correlated with POMS fatigue-inertia (r = .276 p = .024 ). Conclusions: Our findings suggest that mood states are associated with h emodynamic variables underlying blood pressure.