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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.