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. 2012 Feb 22;3:34. doi: 10.3389/fphys.2012.00034

Table 4.

Heart rate variability measures in patients with Parkinson disease and age-matched controls.

Parkinson disease (n = 10) Age-matched control (n = 60) P value Bootstrap samples of age-matched control (n = 10)
Mean NN, ms 779 ± 118 780 ± 112 0.975 801 (717–885)
SDNN, ms 70.4 ± 33.5 91.6 ± 29.6 0.086 95.8 (76.1–118.7)
SDANN, ms 34.0 ± 26.7 46.6 ± 27.4 0.191 44.4 (30.3–62.2)
RMSSD, ms 18.2 ± 11.6 23.1 ± 12.8 0.240 26.3 (17.9–35.5)
ln HF, ln ms2 4.21 ± 1.19 4.96 ± 1.13 0.089 5.00 (4.30–5.71)
ln LF, ln ms2 4.22 ± 1.31 5.70 ± 0.97 0.006 5.69 (5.21–6.17)
ln VLF, ln ms2 5.82 ± 1.20 7.17 ± 0.82 0.006 7.13 (6.68–7.56)
ln ULF, ln ms2 8.15 ± 0.77 8.55 ± 0.64 0.148 8.66 (8.25–9.08)
LF/HF ratio 1.30 ± 1.03 2.62 ± 1.69 0.003 2.48 (1.60–3.54)
DC, ms 3.93 ± 1.41 5.46 ± 1.60 0.008 5.27 (4.45–6.11)
AC, ms −4.03 ± 1.57 −5.80 ± 1.81 0.007 −5.74 (−6.80 to −4.73)
α1 0.83 ± 0.28 1.12 ± 0.24 0.011 1.07 (0.96–1.19)
α2 1.17 ± 0.08 1.19 ± 0.07 0.456 1.18 (1.14–1.23)
λ25s 0.42 ± 0.09 0.40 ± 0.08 0.574 0.41 (0.37–0.46)
λ2-slope −0.01 ± 0.11 −0.02 ± 0.09 0.81 −0.02 (−0.06 to 0.03)

Fifth column shows mean value and 95%-confidence interval based on 2000 bootstrap samples. P< 0.05.