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. 2009 Jun 19;137(1):95–101. doi: 10.1378/chest.09-0791

Table 2.

—Parameters of Daytime HRV Before and After Sleep Fragmentation

HRV Parameter Prefragmentation Postfragmentation
VLF power, ms2 2741.5 (374.2) 2621.0 (308.4)
LF power, ms2 2215.3 (365.2) 3045.5 (373.7)a
HF power, ms2 1751.2 (226.9) 1334.0 (351.1)b
LF/(HF+LF) 0.55 (0.07) 0.70 (0.07)a

Values reported are mean and (SEM). See Table 1 for expansion of abbreviations.

a

P < .001 comparing sleep prefragmentation and postfragmentation.

b

P < .03 comparing sleep prefragmentation and postfragmentation.