Table 1 Sample characteristics

From: The six-minute walk distance is a marker of hemodynamic-related functional capacity in hypertension: a case–control study

 

Groups

 

Variable

Hypertension (n=41)

Healthy (n=41)

P-value (between groups)

Men, n (%)

18 (44%)

19 (46%)

0.824a

Age (years)

48.9±11.6

32.8±6.2

<0.001b

Height (m)

1.71±0.07

1.72±0.07

0.344b

Weight (kg)

83.2±15.2

76.2±9.1

0.007b

Body mass index (kg m−2)

28.2±4.2

25.7±2.0

0.001b

Hypertension course (months)

63.9±72.6

0±0

NT

Office blood pressure (mm Hg)

 Systolic

156.4±17.7

130.0±6.0

<0.001b

 Diastolic

91.3±8.0

84.7±4.5

<0.001b

 Mean arterial pressure

113.0±10.0

99.8±4.5

<0.001b

 Pulse pressure

65.0±14.5

45.3±4.5

<0.001b

Risk factors, n (%)

 Quantity of risk factors

0 (0; 2)

2 (0; 5)

NT

 Smoker

15 (37%)

6 (15%)

0.023a

 Sedentary

26 (63%)

8 (20%)

<0.001a

 History of premature CVD

15 (37%)

0 (0%)

NT

 Obesity

11 (27%)

1 (2%)

0.002a

 Dyslipidemia

35 (85%)

*

NT

 Diabetes mellitus

10 (24%)

*

NT

Physical activity level

 Very active

2 (5%)

10 (24%)

0.001a

 Active

12 (29%)

23 (56%)

<0.001a

 Irregularly active A

9 (22%)

4 (10%)

0.002a

 Irregularly active B

18 (44%)

4 (10%)

<0.001a

Antihypertensive drug treatment, n (%)

 Quantity of medications

3 (1; 5)

0 (0; 0)

NT

 Diuretics

40 (98%)

0 (0%)

NT

 Vasodilator

39 (95%)

0 (0%)

NT

 β-Blocker

18 (44%)

0 (0%)

NT

 ACE inhibitors

8 (20%)

0 (0%)

NT

 Sympatholytic

3 (7%)

0 (0%)

NT

 AT2 antagonist

1 (2%)

0 (0%)

NT

  1. Abbreviations: ACE, angiotensin-converting enzyme; CVD, cardiovascular disease; irregularly active A, present one criterion for physical activity regarding frequency or duration; irregularly active B, does not match both criteria of frequency nor duration for physical activity; NT, variables not tested owing to cells with zeroed values or data not available.
  2. aCategorical variables compared between groups by the Z-test.
  3. bContinuous variables compared between groups by the t-test.
  4. *Exam not performed.