Measures of Time Domain
  Parkinson Group (n=36) Mean ± SD Control Group (n=36) Mean ± SD P
NN 343.2 ± 95.9 597.1 ± 111.7 0.001
PNN50 0.6 ± 1.3 2.7 ± 1.4 0.003
SDNN 40.7 ± 13.3 66.2 ± 19.2 0.009
RMSSD 6.2 ± 2.4 15.3 ± 3.9 0.004
Measures of Frequency Domain
  Parkinson Group (n=36) Mean ± SD Control Group (n=36) Mean ± SD p
VLF 317.1 ± 93.9 338.5 ± 123.7 0.033
LF 34.6 ± 6.7 69.3 ± 11.8 0.003
HF 10.9 ± 3.9 18.2 ± 3.8 0.003
LF/HF 4.7 ± 1.1 7.9 ± 2.2 0.031
Table 2: Measures of HRV and statistical comparisons between groups.
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