Mood states and impedance cardiography-derived hemodynamics

Abstract

Objective: This exploratory study investigated the relation between psychological 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 participants. Results: Mood states were not significantly associated with heart rate, systolic, diastolic, or mean arterial pressure. In comparison with these basic measures of physiology, a number of impedance derived measures of hemodynamics were associated with mood states. Log stroke volume was negatively correlated with POMS tension-anxiety (r = -.319, p = .009) and fatigue-inertia (r = -.316, p = .009). Log cardiac output was negatively associated with fatigue-inertia (r = -.346, p < .01). Log total peripheral vascular resistance was positively correlated with POMS fatigue-inertia (r = .276, p = .024). Conclusions: Our findings suggest that mood states are associated with hemodynamic variables underlying blood pressure.