Table 1.
Body mass, aerobic fitness (VT1, VT2, and VO2 peak), and performance (40 km TT) for participants supplementing their diet with whey (WS) or placebo (PLA).
| Variable | WS | PLA | ||
|---|---|---|---|---|
| Before | After | Before | After | |
| Body mass (kg) | 79.0 ± 10.4 | 78.2 ± 10.1* | 84.5 ± 11.0 | 83.2 ± 10.2* |
| VT1 (L·min−1) | 2.54 ± 0.30 | 2.80 ± 0.36* | 2.55 ± 0.50 | 2.79 ± 0.40* |
| VT2 (L·min−1) | 3.29 ± 0.31 | 3.49 ± 0.35* | 3.33 ± 0.68 | 3.54 ± 0.59* |
| VO2 peak (mL·min−1·kg−1) | 52.3 ± 6.1 | 56.1 ± 5.4* | 50.0 ± 7.1 | 54.9 ± 5.1* |
| VO2 peak (L·min−1) | 4.11 ± 0.53 | 4.37 ± 0.51* | 4.20 ± 0.62 | 4.56 ± 0.63* |
| HR peak (b·min−1) | 194 ± 7 | 193 ± 7 | 189 ± 8 | 190 ± 7 |
| 40 km TT (min) | 71.47 ± 12.17 | 64.38 ± 8.09* | 72.33 ± 12.79 | 61.13 ± 8.97* |
| 40 km TT HR (b·min−1) | 175 ± 11 | 174 ± 12 | 179 ± 7 | 177 ± 5 |
VT1, ventilatory threshold 1; VT2, ventilatory threshold 2; VO2 peak, highest oxygen consumption during the graded exercise test; HR peak, highest heart rate during the graded exercise test; TT, time trial; TT HR, mean heart rate during the cycling time trial.
*
significantly different from before training, P < 0.05. Values are means ± SD.