Baseline resting and exercise treadmill test measures of the study population according to the severity of AS
| Total (n=306) | Moderate AS (n=204) | Severe AS (n=102) | P value | |
| Pre-ETT heart rate, bpm | 77±15 | 76±15 | 78±16 | 0.471 |
| Pre-ETT systolic BP, mm Hg | 141±19 | 141±19 | 143±19 | 0.395 |
| Pre-ETT diastolic BP, mm Hg | 85±11 | 84±11 | 86±11 | 0.098 |
| Peak heart rate, bpm | 134±25 | 134±26 | 134±23 | 0.802 |
| Peak systolic BP, mm Hg | 166±26 | 167±26 | 165±25 | 0.401 |
| Peak diastolic BP, mm Hg | 90±16 | 90±16 | 91±16 | 0.441 |
| Abnormal BP response | 113 (37%) | 72 (36%) | 42 (41%) | 0.388 |
| Target heart rate achieved, % | 86±15 | 85±15 | 89±14 | 0.080 |
| Rapid early rise in heart rate | 77 (25%) | 49 (24%) | 28 (28%) | 0.452 |
| Exercise duration, min | 9.7±4.4 | 9.8±4.7 | 9.6±3.6 | 0.648 |
| METs | 8.5±4.5 | 9.0±4.8 | 8.0±3.9 | 0.063 |
| Revealed symptoms | 87 (28.4%) | 50 (24.5%) | 37 (36.3%) | 0.032 |
| Double product, mm Hg · bpm | 1.90±0.46 | 1.91±0.48 | 1.90±0.43 | 0.874 |
AS, aortic stenosis; BP, blood pressure; ETT, exercise treadmill test; METs, metabolic equivalents; bpm, beats per minute.