Spectrum

The Spectrum tab reflects the influence of different systems of regulation, modulating the amplitude-frequency characteristics of heart rate. It allows you to evaluate the various frequency components of fluctuations in heart rhythm. There are three main spectral components: HF, LF, VLF.

HF – respiratory waves, or fast wave (T=2,5-6,6 s, v=0.4-0.15 Hz), reflect the processes of breathing and other types of parasympathetic activity, on the spectrogram shown in green color.

LF – medium waves (T=6,6-25 C, v=is 0.15-0.04 Hz) are associated with sympathetic activity (primarily vasomotor center), on the spectrogram marked in red.

VLF – slow waves (T=25-300 C, v=0,04-0,0033 Hz), various slow humoral-metabolic effects, on the spectrogram are shown in blue.

ТР – total power of all components of the spectrum, reflects the body's ability to adapt under stressful load. In a healthy person it is usually in the range of 1500-3000 units.

The Spectrum graph can be detailed by selecting the desired range at the bottom left: all, by VLF, by HF, by LF, or set your own value.

— display the graph as a table of values:

The table can be exported to text file or copied.

The Spectral power of ranges graph displays the relative magnitude of the ranges of HF/LF/VLF. It assesses the equity of all components forming the heart rhythm. It is convenient to estimate the share of the central influences on the heart rate - VLF.

LF/HF graph shows the ratio of the influence of the sympathetic and parasympathetic divisions of the autonomic nervous system on the heart. It is possible to assess the autonomic balance – the ratio of the processes of mobilization and recovery of energy.

— copy chart to clipboard

The Copy table button allows to copy the table of values in clipboard.