Related Variables
hf | High frequency power: the normal sinus to normal sinus interbeat (NN) interval spectral power between 0.15 and 0.4 Hz | Clinical Data/Diagnostic Studies/Heart Rate Variability | |
lf | Low frequency power: the normal sinus to normal sinus interbeat (NN) interval spectral power between 0.04 and 0.15 Hz | Clinical Data/Diagnostic Studies/Heart Rate Variability |