Table 3 Time-domain BP variability and HRV indices in the cold pressor test of the study subjects, stratified by parental history of hypertension, OHP vs. ONP

From: Analysis of beat-to-beat blood pressure variability response to the cold pressor test in the offspring of hypertensive and normotensive parents

 

Baseline (1~5th min)

Cold stimulus (7th min)

Post-baseline (13th min)

Variables

OHP

ONP

P-value

OHP

ONP

P-value

OHP

ONP

P-value

SBPV_SD,mm Hg

5.73±1.88

5.25±1.13

0.201

5.17±3.11

5.65±3.32

0.543

4.08±1.24

3.95±1.58

0.696

SBPV_CV, %

4.42±1.10

4.34±1.06

0.757

3.51±2.13

4.14±2.71

0.286

3.15±1.09

3.10±1.24

0.858

SBPV_ARV, mm Hg

1.77±0.42

1.65±0.36

0.220

1.92±0.69

2.02±0.77

0.570

1.63±0.43

1.61±0.43

0.838

SBPV_SuV, mm Hg

2.39±0.50

2.31±0.46

0.514

2.81±1.29

2.83±1.15

0.942

2.11±0.53

2.10±0.52

0.882

DBPV_SD, mm Hg

3.90±0.95

3.93±0.92

0.897

4.06±1.94

5.53±3.20

0.350

3.22±0.89

3.34±1.27

0.632

DBPV_CV, %

5.29±1.48

5.68±1.71

0.309

4.61±1.75

5.53±3.20

0.155

4.31±1.53

4.56±1.74

0.530

DBPV_ARV, mm Hg

1.39±0.42

1.53±0.51

0.223

1.74±0.56

1.82±0.66

0.557

1.32±0.42

1.59±0.63

0.036*

DBPV_SuV, mm Hg

1.93±0.54

2.11±0.64

0.221

2.50±0.96

2.50±0.94

0.969

1.77±0.53

2.17±0.80

0.019*

SDNN, ms

58.3±19.6

65.3±23.9

0.193

58.5±26.0

63.6±28.0

0.432

49.9±19.5

65.3±35.2

0.028*

CVrr, %

6.62 ±2.22

6.25±1.93

0.464

6.66±2.45

6.91±2.56

0.672

5.35±1.81

6.43±2.84

0.067

rMSSD, ms

50.1±20.3

62.0±33.7

0.082

49.5±28.7

58.5±33.2

0.230

47.4±20.1

71.8±54.2

0.016*

  1. Abbreviations: ARV, average real variability; BP, blood pressure; CV, coefficient of variation; CVrr, coefficient of variation of R-R intervals; DBPV, diastolic BP variability; HRV, heart rate variability; OHP, offspring with hypertensive parents; ONP, offspring with normotensive parents; rMSSD, square root of the mean squared differences of successive R-R intervals; SBPV, systolic BP variability; SDNN, s.d. of R-R intervals; SuV, successive variation.
  2. The results with the statistical significance are marked in bold. Significance of the estimates, *P<0.05. Values are means±s.d.
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