Table 1.

Subject Characteristics (n = 260)

Variables	Values
Age, years	54.4 ± 2.85
Smoker, current/former/never	43 / 111 / 106
Hypertension, yes/no	114 / 146
Diabetes, yes/no	21 / 239
Physical Activity	7.51 ± 1.58
BMI, kg/m2	29.1 ± 4.61
SBP, mmHg	128.4 ± 16.03
DBP, mmHg	80.6 ± 10.64
TC, mg/dl	189.1 ± 37.96
HDL-C, mg/dl	38.6 ± 9.49
LDL-C, mg/dl	125.2 ± 33.72
Glucose, mg/dl	100.0 ± 16.26
Norepinephrine, ug/24H	23.6 ± 16.9
BDI scores	4.88 ± 6.72
IL-6, pg/ml	2.29 ± 2.04
CRP, mg/l	2.32 ± 3.12
HR, beat/min	66.4 ± 8.75
Ln ULF	9.14 ± 0.56
Ln VLF	7.63 ± 0.57
Ln LF	6.69 ± 0.72
Ln HF	5.41 ± 0.88

Mean ± SD for continuous variables and count number for categorical variables. SD, standard deviation; BMI, body mass index; SBP, systolic blood pressure; DBP, diastolic blood pressure; TC, total cholesterol; HDL-C, high density lipoprotein cholesterol; LDL-C, low density lipoprotein cholesterol; GLU, glucose; BDI, Beck depression inventory; IL-6, interleukin-6; CRP, C-reactive protein; HR, heart rate; ULF, ultra low frequency; VLF, very low frequency; LF, low frequency; HF, high frequency.