Heart Rate Variability: for real doctors. Regulation in human health. Daily fluctuations in HRV

Yabluchansky N.I., Martynenko A.V.

Heart rate variability: for real doctors. Translation from the Russian version of the book, published at Kharkiv, 2010, 131 p.
The basics and practice of the clinical use of the technology of heart rate variability are outlined for doctors of all specialties and students of medical faculties of universities.

8. Regulation in human health

Daily fluctuations in HRV

Daily variations of HRV are manifested by lower values of HRV parameters of the time domain at day time, with a relative height of VLF and LF in the daytime, and HF at night time.
Sleep is the kingdom of the nervus vagus.
The increase in HF during sleep is associated with more regular and deep breathing (modulation of respiration).
Standards of HRV indicators that reflect the state of regulation for different groups of healthy people in basal conditions in the daytime and at night present in Table. 8.1 and 8.2.

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