Maximal oxygen uptake and rates of fat oxidation measured during exercise in men and women before and after 12 weeks of SIT
| Men (pre) | Men (post) | Women (pre) | Women (post) | Training effect | Sex effect | Sex×training | |
|---|---|---|---|---|---|---|---|
| VO2 max (L/min) | 3.49 (0.13) | 3.68 (0.15) | 1.99 (0.11) | 2.37 (0.12) | 0.001 | <0.001 | 0.049 |
| VO2 max (mL/kg/min) | 42.91 (1.84) | 45.49 (1.48) | 33.56 (2.29) | 39.84 (2.44) | <0.001 | 0.005 | 0.009 |
| HRmax (bpm) | 177 (3) | 178 (3) | 175 (4) | 174 (4) | 0.645 | 0.977 | 0.268 |
| RERmax | 1.21 (0.01) | 1.18 (0.02) | 1.20 (0.02) | 1.21 (0.02) | 0.430 | 0.763 | 0.214 |
| FATmax (g/min) | 0.41 (0.03) | 0.49 (0.04) | 0.31 (0.03) | 0.34 (0.02) | 0.032 | 0.004 | 0.465 |
| FATmax (mg/kg/min) | 5.12 (0.39) | 6.04 (0.40) | 5.14 (0.52) | 5.77 (0.41) | 0.033 | 0.815 | 0.690 |
| FATmax (mg/kg lean mass/min) | 6.90 (0.50) | 8.10 (0.62) | 7.90 (0.76) | 8.87 (0.65) | 0.041 | 0.272 | 0.824 |
| Workload at FATmax (W) | 111.6 (9.81) | 112.80 (7.56) | 62.94 (5.43) | 62.73 (6.76) | 0.961 | <0.001 | 0.834 |
| FATmax (as %VO2max) | 51.43 (1.88) | 51.83 (1.65) | 60.26 (3.61) | 53.25 (2.18) | 0.229 | 0.066 | 0.047 |
| Heart Rate at FATmax (bpm) | 123 (5) | 115 (3) | 120 (4) | 112 (4) | 0.038 | 0.601 | 0.465 |
The bold font highlights statistically significant values (p<0.05). Data are shown as mean (SEM). All measurements were recorded during an incremental cycling test.
FATmax, maximal rate of fat oxidation; HRmax, maximal heart rate; RERmax, maximal respiratory exchange ratio; SIT, sprint interval training; VO2max, maximal rate of oxygen uptake.