Table 1 Descriptive characteristics of study subjects

Age (years)

41.7 ± 6.7

Weight (kg)

84.8 ± 12.6

BMI (kg m⁻²)

29.0 ± 3.4

Waist circumference (cm)

96.3 ± 8.2

Rest SBP (mmHg)

134.5 ± 18.7

Rest DBP (mmHg)

84.8 ± 13.8

24-h SBP (mmHg)

139.1 ± 14.2

24-h DBP (mmHg)

85.2 ± 11.4

Morning SBP (mmHg)

140.3 ± 16.5

Morning DBP (mmHg)

88.0 ± 14.0

Worksite SBP (mmHg)

147.4 ± 15.5

Worksite DBP (mmHg)

90.5 ± 12.6

Home SBP (mmHg)

145.4 ± 18.3

Home DBP (mmHg)

87.9 ± 12.5

Sleep SBP (mmHg)

120.9 ± 16.8

Sleep DBP (mmHg)

75.6 ± 12.6

24-h average heart beat (bpm)

80.5 ± 6.3

24-h LF

544.6 ± 423.1

24-h HF

186.2 ± 205.2

24-h LF/HF

3.8 ± 2.5

Awake value of LF

508.0 ± 407.5

Awake value of HF

125.3 ± 171.6

Awake value of LF/HF

5.5 ± 2.8

Des-acyl ghrelin (pmol l⁻¹)

179.3 ± 87.4

Glucose (mg dl⁻¹)

100.2 ± 13.0

Insulin (μU ml⁻¹)

9.8 ± 4.6

HOMA-R

2.5 ± 1.3

HbA1c (%)

5.2 ± 0.6

Current smoker, n (%)

11 (32.4)

Alcohol drinker, n (%)

10 (29.4)

Job demand score

9.2 ± 2.0

Job control score

8.9 ± 2.2

Job strain, n (%)

8 (23.5)

Sedentary work, n (%)

15 (44.1)

Poor sleep condition, n (%)

14 (41.2)