Table 2. Maximal incremental ramp test and characteristics of whole-body fat oxidation kinetics during the submaximal incremental test (Incr).
| Lean | Obese | P value | |
| Maximal incremental ramp test | |||
 , mL.min−1
|
3003±138 | 3052±106 | NS |
 , mL.min−1.kg−1
|
41.8±1.8 | 25.2±0.9 | ≤ 0.001 |
 , mL.FFM−1.min−1
|
53.8±1.7 | 44.9±1.3 | ≤ 0.001 |
| PPO, W | 259±13 | 213±7 | < 0.01 |
| HRmax, bpm | 183±2 | 168±2 | ≤ 0.001 |
| Submaximal incremental test | |||
| MFO, mg.FFM−1.min−1 | 6.3±0.4 | 6.1±0.3 | NS |
Fatmax, %
|
56.8±1.7 | 47.2±2.6 | < 0.01 |
Fatmaxzone, %
|
29.4±1.0 | 25.1±1.3 | < 0.05 |
| Fatmax, % HRmax | 73.8±1.7 | 65.2±2.3 | < 0.01 |
| RERFatmax | 0.88±0.00 | 0.83±0.01 | ≤ 0.001 |
| Dilatation | 0.2±0.1 | –0.1±0.1 | ≤ 0.001 |
| Symmetry | 1.2±0.1 | 1.0±0.0 | < 0.05 |
| Translation | 0.0±0.1 | 0.1±0.1 | NS |
Values are the means±SE. 
: peak oxygen uptake; FFM: fat-free mass; PPO: peak power output; HRmax: maximal heart rate; Fatmax: exercise intensity at which maximal fat oxidation rate (MFO) occurs; Fatmax zone: range of exercise intensities with fat oxidation rates within 10% MFO; RER: respiratory exchange ratio; NS: non significant.