Table 1.
Descriptive statistics for baseline variables, hemodynamic, and cardiorespiratory fitness responses to maximum exercise on a cycle ergometer for black and white American men. Data presented as mean ± SD along with results of independent t tests.
| Blacks (n = 1245) |
Whites (n = 4751) |
||||
|---|---|---|---|---|---|
| Variable | Mean | SD | Mean | SD | p |
| Age (y) | 42.2 | 10.8 | 42.9 | 11.3 | 0.052 |
| Height (cm) | 178.9 | 7.6 | 179.8 | 6.9 | <.001* |
| Weight (kg) | 89.1 | 14.3 | 88.9 | 14.1 | 0.667 |
| BMI (kg/m2) | 27.8 | 3.9 | 27.5 | 3.9 | .01* |
| Resting HR (bpm) | 74.8 | 11.5 | 75.2 | 12.2 | 0.389 |
| Resting SBP (mmHg) | 120.2 | 13.3 | 119.5 | 11.9 | 0.073 |
| Resting DBP (mmHg) | 78.9 | 9 | 77.5 | 8.4 | <.001* |
| Max HR (bpm) | 151.2 | 17.3 | 156.4 | 16.5 | <.001* |
| Peak SBP (mmHg) | 179 | 26.9 | 174.7 | 22.8 | <.001* |
| Δ SBP (mmHg) | 58.7 | 23.3 | 55.2 | 20.8 | <.001* |
| Absolute V̇o2peak (L·min−1) | 2.08 | 0.49 | 2.53 | 0.61 | <.001* |
| Relative V̇o2peak (ml·kg−1·min−1) | 23.6 | 5.3 | 28.8 | 7.2 | <.001* |
| Max RER (V̇co2/V̇o2) | 1.15 | 0.1 | 1.13 | 0.08 | <.001* |
| Peak O2 Pulse (ml/beat) | 13.8 | 2.92 | 16.2 | 3.5 | <.001* |
| SBP/MET-slope (mmHg/MET) | 10.8 | 5.1 | 8.2 | 3.7 | <.001* |