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Spectral analysis of the heart rate variability

, : Spectral analysis of the heart rate variability. Studia Biophysica 75(3): 183-188

Power density spectra of the heart rate variability gives data concerning their periodic components. Spectra were calculated by the fast Fourier transformation from the patterns of the heart rate of 10 healthy men at rest, ergometric workload of 1 W/kg, 2 W/kg and maximal load, immediately after break of the load and after 12 min recovery. The well known reduction of the variability at physical work does not concern all spectral ranges to the same extent. The range of .apprx. 0.1 s-1 is reduced 1st and rises quickly at recovery. Different spectral ranges of the heart rate variability possess different significance.

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