TABLE 3.
Group Average Hemodynamic Measurements at Rest, Submaximal (50 W), and Peak Exercise Across Different Age Groups
| Resting |
Submax (50 W) |
Peak Exercise |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| <40 yrs | 40–60 yrs | >60 yrs | <40 yrs | 40–60 yrs | >60 yrs | <40 yrs | 40–60 yrs | >60 yrs | |
|
| |||||||||
| Peak oxygen uptake, ml/m2/min | 160 ± 29 | 160 ± 24 | 141 ± 25 | 465 ± 75 | 479 ± 55 | 392 ± 46 | 1,226 ± 252 | 1,081 ± 282 | 792 ± 179 |
| Heart rate, beats/min | 79 ± 13 | 76 ± 12 | 75 ± 16 | 102 ± 16 | 100 ± 1 | 99 ± 18 | 178 ± 10 | 160 ± 13 | 148 ± 11 |
| Left ventricular stroke volume index, ml/m2 | 39 ± 10 | 40 ± 10 | 31 ± 10 | 54 ± 11 | 54 ± 11 | 40 ± 7 | 52 ± 11 | 52 ± 10 | 39 ± 6 |
| Cardiac index, l/m2/min | 3.0 ± 0.8 | 3.0 ± 0.9 | 2.2 ± 0.6 | 5.5 ± 1.3 | 5.4 ± 1.1 | 4.0 ± 0.7 | 9.3 ± 1.9 | 8.2 ± 1.6 | 5.8 ± 1.1 |
| Ejection fraction, % | 64 ± 9 | 65 ± 8 | 65 ± 10 | 71 ± 7 | 72 ± 8 | 71 ± 10 | 78 ± 10 | 73 ± 10 | 71 ± 10 |
| Pulmonary capillary wedge pressure, mm Hg | 2 ± 2.6 | 3 ± 2.3 | 3 ± 3.3 | 4.3 ± 3.3 | 5.0 ± 2.7 | 4.4 ± 3.3 | 9 ± 3.8 | 8 ± 3.4 | 8 ± 4.8 |
| Arteriovenous oxygen difference, vol % | 5.5 ± 1.1 | 5.8 ± 1.0 | 6.7 ± 1.3 | 8.6 ± 1.2 | 9.2 ± 1.5 | 10.1 ± 1.3 | 13.5 ± 2.0 | 13.2 ± 2.4 | 13.4 ± 1.8 |
| Left ventricular end-diastolic volume index, ml/m2 | 62 ± 18 | 61 ± 14 | 47 ± 14 | 77 ± 17 | 75 ± 11 | 58 ± 11 | 67 ± 17 | 71 ± 15 | 56 ± 11 |
Values are mean ± SD.