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High frequency power: the normal sinus to normal sinus interbeat (NN) interval spectral power between 0.15 and 0.4 Hz
hf
under Clinical Data/Diagnostic Studies/Heart Rate Variability in
SHHS variables
Low frequency power: the normal sinus to normal sinus interbeat (NN) interval spectral power between 0.04 and 0.15 Hz
lf
under Clinical Data/Diagnostic Studies/Heart Rate Variability in
SHHS variables
Total normal sinus to normal sinus interbeat (NN) interval spectral power up to 0.4 Hz
tot_pwr
under Clinical Data/Diagnostic Studies/Heart Rate Variability in
SHHS variables
Ultra-low frequency power: the normal sinus to normal sinus interbeat (NN) interval spectral power between 0 and 0.003 Hz
ulf
under Clinical Data/Diagnostic Studies/Heart Rate Variability in
SHHS variables
Very low frequency power: the normal sinus to normal sinus interbeat (NN) interval spectral power between 0.003 and 0.04 Hz
vlf
under Clinical Data/Diagnostic Studies/Heart Rate Variability in
SHHS variables
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