Table 4.
Cardiorespiratory fitness and exercise performance variables pre- and post-intervention.
| Variable | HIIT group (n = 32) |
MIIT group (n = 22) |
CON group (n = 31) |
|||
|---|---|---|---|---|---|---|
| Pre | Post | Pre | Post | Pre | Post | |
| VO2max (L) | 2.51 ± 0.69 | 2.75 ± 0.68***a | 2.06 ± 0.56 | 2.12 ± 0.55 | 2.24 ± 0.87 | 2.09 ± 0.92** |
| VO2max (mL/kg/min) | 21.9 ± 5.3 | 25.1 ± 5.4***aa | 20.3 ± 3.8 | 21.5 ± 4.3* | 21.0 ± 7.3 | 20.7 ± 7.8 |
| Wmax (W) | 158 ± 46 | 182 ± 43***bb | 133 ± 40 | 140 ± 43* | 156 ± 62 | 150 ± 61* |
| Wmax (W/kg) | 1.4 ± 0.4 | 1.7 ± 0.4*** | 1.3 ± 0.3 | 1.4 ± 0.3** | 1.5 ± 0.6 | 1.5 ± 0.6 |
| WVT (W) | 58 ± 27 | 84 ± 28***b | 53 ± 24 | 62 ± 29** | 68 ± 32 | 66 ± 30 |
| HRmax (b/min) | 160 ± 18 | 161 ± 18 | 153 ± 22 | 153 ± 24 | 155 ± 24 | 150 ± 24 |
Values are expressed as mean ± SD. HIIT high-intensity interval training group, MIIT moderate-intensity interval training group, CON control group, VO2max maximal oxygen uptake, Wmax maximal power output, WVT power output at the ventilatory threshold, HRmax maximal heart rate. *(p < 0.05), **(p < 0.01), ***(p < 0.001), significantly different from pre-intervention. a(p < 0.05), aa(p < 0.01), significant difference HIIT vs. CON; b(p < 0.05), bb(p < 0.01), significant difference HIIT vs. MIIT and CON.