title: [The significance of sympathovagal balance in the forming of respiration-dependent oscillations in cardiovascular system in human].
abstract: The effect of deep breathing controlled in both rate and amplitude on the heart rate variability (HRV) and respiration-dependent blood flow oscillations of forearm and finger-pad skin has been studied in 29 young healthy volunteers from 18 to 25 years old. To reveal the effect of the segments of the vegetative autonomic nervous system on the amplitudes of HRV and respiration-dependent oscillations of skin blood flow we estimated the parameters of the cardiovascular system into two groups of participants: with formally high and low sympathovagal balance values. The sympathovagal balance value was judged by the magnitude of LF/HF power ratio calculated for each participant using the spontaneous breathing rhythmogram. It was found what the participants with predominant parasympathetic tonus had statistically significant higher amplitudes of H R V and skin blood flow oscillations in the breathing rate less than 4 cycles per min than the subjects with predominant sympathetic tonus. In the forearm skin, where the density of sympathetic innervations is low comparatively to that in the finger skin, no statistically significant differences in the amplitude of respiratory skin blood flow oscillations was found between the two groups of participants.
authors.forename: G V
authors.initials: GV
authors.lastname: Krasnikov
authors.forename: M Ĭ
authors.initials: MĬ
authors.lastname: Tiurina
authors.forename: A V
authors.initials: AV
authors.lastname: Tankanag
authors.forename: G M
authors.initials: GM
authors.lastname: Piskunova
authors.forename: N K
authors.initials: NK
authors.lastname: Cheremis
mesh_terms: D000328:Adult; D002319:Cardiovascular System; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D012119:Respiration; D056152:Respiratory Rate; D013564:Sympathetic Nervous System / Q000502:physiology*