Table 4. Heart rate variability measures at baseline, week six and week twelve. Data are means (±SD).
Supervised Home based Control
Week 1 6 12 1 6 12 1 6 12
HF(ln) 4.10
(1.28)		 4.39
(1.58)		 3.98
(1.18)		 3.61
(1.34)		 3.30
(1.40)		 3.88
(1.30)		 4.02
(1.35)		 4.40
(1.43)		 4.17
(1.28)
LF(nu) 64.4
(22.0)		 70.3
(21.2)		 68.4
(14.3)		 67.7
(21.2)		 75.9
(15.3)		 66.3
(14.3)		 79.6
(20.0)		 72.5
(18.8)		 68.7
(24.8)
LF(ln):HF(ln) 1.33
(.45)		 1.33
(.34)		 1.22
(.28)		 1.22
(.32)		 1.54
(.43)		 1.25
(.24)		 1.48
(.43)		 1.44
(.44)		 1.38
(.28)
Mean RR-interval 756.6 (154.3) 766.3 (114.5) 799.8 (144.6) 773.0 (213.0) 748.1 (201.8) 808.4 (177.0) 840.5 (118.2) 824.4 (136.7) 836.6 (146.7)
HF(ln) = Natural logarithm of high frequency spectral power. LF(nu) = Low frequency spectral power in normalised units. LF(ln):HF(ln) = Ratio of natural logarithm of high frequency spectral power to natural logarithm of low frequency spectral power. RR = mean R-R interval from filtered ECG data.