Table 2.
Muscle metabolite concentrations at rest and during 240 min exercise at 57 % V̇O2,max
| 0 min | 10 min | 120 min | 240 min | |
|---|---|---|---|---|
| ATP | 23.6 ± 0.5 | 24.7 ± 1.1 | 24.0 ± 1.1 | 24.0 ± 1.1 |
| PCr | 83.4 ± 2.8 | 70.1 ± 5.3 * | 60.6 ± 6.6 * | 60.8 ± 3.4 * |
| Creatine | 49.3 ± 1.6 | 62.7 ± 3.8 * | 72.1 ± 5.5 * | 71.9 ± 6.1 * |
| Lactate | 8.7 ± 1.3 | 14.1 ± 2.8 * | 6.3 ± 1.4 | 7.2 ± 1.3 |
| Pyruvate | 0.08 ± 0.02 | 0.13 ± 0.03 | 0.10 ± 0.03 | 0.12 ± 0.03 |
| Glycogen | 468 ± 49 | NM | 217 ± 48 * | 144 ± 47 *† |
Values are means ± s.e.m., n = 7. All values are expressed as mmol kg−1 d.m.
*
Significantly different (P < 0.05) from 0 min
†
significantly different (P < 0.05) from 120 min.
NM, not measured.