| Age, years, mean (range) | 63.2 (41 - 78) |
| Males | 74 |
| Females | 26 |
| Hypertension (syst. ≥140 mmHg) | 74 |
| Diabetes (insulin or oral) | 7 |
| Smokers, current | 7 |
| BMI (kg/m2) | 27.2 (20 - 41) |
| Renal disease, creatinine ˃ 120 µmol/l | 10 |
| NYHA [14] |
|
| I - II | 69 |
| III - IV | 31 |
| CLEVELAND Clinic score [15] |
|
| 0 - 1 | 60 |
| 2 - 8 | 40 |
| Pulmonary disease | 6 |