Table 1.
Experimental Groups: age, HbCO, and V̇o2max
| Group | Age | n | Exposure | Pre-HbCO | Pre-V̇o2max, ml·kg−1·min−1 | Post-HbCO | Post-V̇o2max, ml·kg−1·min−1 |
|---|---|---|---|---|---|---|---|
| CO + V̇o2max | 25.2 (19–32) | 5 | 100 ppm CO 1 h × 5 days | 1.6±0.2 | 40.9±4.18 | 3.3±0.6 | 41.8±4.79 |
| Air + V̇o2max | 24.2 (20–32) | 5 | Air 1 h × 5 days | 1.7±0.6 | 42.98±6.64 | 1.0±0.5 | 43.44±7.84 |
| CO only | 26.3 (24–30) | 6 | 100 ppm CO 1 h × 5 days | 1.2±0.2 | ND | 3.2±0.5 | ND |
Values are means ± SE with ranges in parentheses; n, no. of subjects. HbCO, carboxyhemoglobin; maximal oxygen uptake; CO, carbon monoxide; ppm, parts/million; ND, not determined.