Table 1.
Effects of training in the fasted state vs. training in the carbohydrate-fed state during an incremental exercise test to exhaustion and a 1-h time trial
| F | CHO | |
|---|---|---|
| Incremental V̇o2max test | ||
| V̇o2max, ml · min−1 · kg−1 | ||
| Pretest | 56.7 ± 3.3 | 57.0 ± 3.7 |
| Posttest | 61.8 ± 3.0* | 61.4 ± 2.6* |
| Time to exhaustion, min | ||
| Pretest | 26.9 ± 1.1 | 26.6 ± 1.1 |
| Posttest | 29.3 ± 1.1* | 28.8 ± 0.9* |
| FATmax, W† | ||
| Pretest | 154 ± 11 | 169 ± 9 |
| Posttest | 186 ± 10* | 180 ± 9* |
| 1-h Time trial | ||
| Total work, kJ | ||
| Pretest | 823 ± 36 | 820 ± 37 |
| Posttest | 881 ± 34* | 887 ± 37* |
Data provided are means ± SE (F: n = 10; CHO: n = 10). An incremental exercise test and a 1-h time trial were performed on a bicycle ergometer before (pretest) and after (posttest) a 6-wk training period in either the fasted state (F) or with ample carbohydrate intake before and during the training sessions (CHO). FATmax represents the exercise intensity estimated to correspond with the maximal rate of fat oxidation as previously described (1). V̇o2max, Maximal oxygen uptake.
*
P < 0.05 vs. pretest.
†
P < 0.05, time × group effect.