کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5926253 | 1167351 | 2013 | 9 صفحه PDF | دانلود رایگان |
The effect of deep breathing controlled in both rate (0.25, 0.16, 0.1, 0.07, 0.05 and 0.03Â Hz) and amplitude on the heart rate variability (HRV) and respiration-dependent oscillations of forearm/finger skin blood flow (SBF) has been studied in 29 young healthy volunteers. The influence of sympathovagal balance on the respiratory sinus arrhythmia (RSA) amplitude and respiratory SBF oscillations has been studied. The subjects with predominant parasympathetic tonus had statistically significant higher RSA amplitudes in the breathing rate region of 0.03-0.07Â Hz than the subjects with predominant sympathetic tonus. In the finger-cushion zone, having a well-developed sympathetic vascular innervations, the amplitudes of respiratory SBF oscillations at breathing rates 0.05 and 0.07Â Hz were higher in the group of subjects with predominant parasympathetic 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 SBF oscillations were found concerning the two groups of subjects.
⺠We studied the respiration-dependent HRV and skin blood flow (SBF) oscillations. ⺠We obtained a bell-shape dependence of RSA amplitude on breathing rhythm. ⺠The amplitude of respiratory SBF oscillations is independent on breathing rhythm. ⺠Status of the vegetative (autonomic) nervous system affects the amplitudes of RSA and respiratory SBF oscillations.
Journal: Respiratory Physiology & Neurobiology - Volume 185, Issue 3, 1 February 2013, Pages 562-570