title: Cardiac Vagal Control and Depressive Symptoms in Response to Negative Emotional Stress.
abstract: We aimed to study complex cardiovagal control using heart rate variability (HRV), linear and nonlinear analyses at rest and during negative emotional stress in healthy students with varying depressive symptoms. ECG recording in 20 students was performed at baseline, negative emotional stress, and recovery period. The HRV parameters evaluated were the following: RR interval, spectral power in high-frequency band (HF-HRV), and symbolic dynamics index 2LV%. The subjects were divided into two groups based on the score of the Beck Depression Inventory (BDI) - normal mood (BDI: 0.6 ± 0.2) and mild mood disturbance (BDI: 14.3 ± 1.4). We found significantly lower logHF-HRV during emotional stress in mild mood disturbance compared with normal mood (p = 0.047). No significant differences were found in the remaining parameters. We conclude that negative emotional stress attenuated the cardiovagal control during mood disturbance, which points to discrete abnormalities in the neurocardiac reflex system associated with depressive symptoms. Hampered cardiovagal control could represent a potential pathomechanism leading to depression-linked cardiovascular complications.
authors.affiliation: Jessenius Faculty of Medicine in Martin (JFM CU), Department of Physiology JFM CU and Biomedical Center Martin JFM CU, Comenius University in Bratislava, Mala Hora 4C, Martin, 036 01, Slovakia.
authors.forename: I
authors.initials: I
authors.lastname: Tonhajzerova
authors.affiliation: Jessenius Faculty of Medicine in Martin (JFM CU), Biomedical Center Martin JFM CU, Comenius University in Bratislava, Mala Hora 4C, Martin, 036 01, Slovakia.
authors.forename: Z
authors.initials: Z
authors.lastname: Visnovcova
authors.affiliation: Jessenius Faculty of Medicine in Martin (JFM CU), Department of Physiology JFM CU and Biomedical Center Martin JFM CU, Comenius University in Bratislava, Mala Hora 4C, Martin, 036 01, Slovakia.
authors.forename: A
authors.initials: A
authors.lastname: Mestanikova
authors.affiliation: Pediatric Cardiology, Martin, Slovakia.
authors.forename: A
authors.initials: A
authors.lastname: Jurko
authors.affiliation: Jessenius Faculty of Medicine in Martin (JFM CU), Department of Physiology JFM CU and Biomedical Center Martin JFM CU, Comenius University in Bratislava, Mala Hora 4C, Martin, 036 01, Slovakia. mestanik@jfmed.uniba.sk.
authors.forename: M
authors.initials: M
authors.lastname: Mestanik
mesh_terms: D000339:Affect / Q000502:physiology; D003863:Depression / Q000503:physiopathology; D004562:Electrocardiography; D004644:Emotions / Q000502:physiology*; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D013315:Stress, Psychological / Q000503:physiopathology*; D014630:Vagus Nerve / Q000503:physiopathology*; D055815:Young Adult
keywords: Depression; Emotion; Heart rate variability; Mood disturbance; Neurocardiac regulation; Stress