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Table 1 Spectral analysis of instantaneous pulse rate variability (iPRV) during different physiologic challenges

From: The interpretation of very high frequency band of instantaneous pulse rate variability during paced respiration

 

LF (ms2)

HF (ms2)

VHF (ms2)

Baseline

1161+/−1841

2223+/−2563

1258+/−1244

6-cycle

8522+/−5865§

1468+/−1424

2080+/−2395

30-cycle

897+/−822

898+/−1021

2333+/−2346§

HUT

802+/−624

1196+/−1397*

939+/−671

  1. Present form is mean +/− SD with n = 15; *means p < 0.05 compared with baseline; §means p < 0.01 compared with baseline.
  2. LF denotes low frequency band (0.04-0.15 Hz); HF denotes high frequency band (0.15-0.4 Hz); VHF denotes very high frequency band (0.4-0.9 Hz); 6-cycle denotes paced respiration with 6 cycles per minute; 30-cycle denotes paced respiration with 30 cycles per minute; HUT denotes head-up tilt.
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