Table 3.
Cardiopulmonary exercise test parameters in control and HFE mutation group.
| Variables | EG | CG | p value |
|---|---|---|---|
| (n = 7) | (n = 6) | ||
| Exercise time (s) | 327 ± 34 | 345 ± 14 | 0.657 |
| HRpeak (beats·min−1) | 190 ± 4 | 191 ± 4 | 0.871 |
| WRpeak (W) | 220.4 ± 16.8 | 254.1 ± 7.98 | 0.053 |
| METspeak | 11.7 ± 0.31 | 14.1 ± 0.68 | 0.006∗ |
| VO2peak (L·min−1) | 2.73 ± 0.14 | 3.08 ± 0.16 | 0.133 |
| VT (% VO2peak) | 74.1 ± 2.31 | 73.4 ± 1.31 | 0.793 |
| VEpeak (L·min−1) | 88.9 ± 4.34 | 112.6 ± 6.24 | 0.008∗ |
| VE/VCO2slope | 24.4 ± 1.15 | 23.8 ± 0.79 | 0.687 |
| RERpeak | 1.24 ± 0.04 | 1.25 ± 0.02 | 0.756 |
Results are shown as means ± SEM. ∗Statistical significant difference; EG, hemochromatosis group; CG, control group; HRpeak, heart rate at peak exercise; WRpeak, work rate at peak exercise; METs, metabolic equivalent; VO2peak, oxygen uptake at peak exercise; VT, ventilatory threshold; VEpeak, minute ventilation at peak exercise; VE/VCO2slope relation between minute ventilation and carbon dioxide production; RERpeak, respiratory exchange ratio.