Table 1. Effect of acute exercise on parameters of skeletal muscle mitochondria and substrates in blood.
| Pre-exercise | Post-exercise | 3 h post-exercise | |
|---|---|---|---|
| Muscle CS (mmol min−1 (kg wet wt)−1) | 19.0 ± 1.3 | 27.3 ± 2.2* | 27.2 ± 3.4* |
| UCP3 (AU (mg protein)−1) | 117 ± 29 | 109 ± 41 | 135 ± 46 |
| ANT (AU (mg protein)−1) | 152 ± 25 | 169 ± 24 | 177 ± 22 |
| State 3 (nmol O2 min−1 (mg protein)−1) | 187 ± 16 | 201 ± 22 | 205 ± 20 |
| State 4 (nmol O2 min−1 (mg protein)−1) | 21 ± 3 | 24 ± 4 | 25 ± 3 |
| NEFA (mm) | 0.22 ± 0.03 | 0.86 ± 0.11* | 1.05 ± 0.1* |
| Glucose (mm) | 4.5 ± 0.2 | 3.8 ± 0.3 | 4.1 ± 0.3 |
*
Values are mean ± s.e.m. from 9 subjects. *Significant difference from value at rest (P < 0.05). UCP3 and ANT are expressed in arbitrary units (AU) per mg of muscle protein. State 3 (coupled respiration) and state 4 (UCR) correspond to mitochondrial respiration in the presence and absence of ADP and are expressed per mg mitochondrial protein. NEFA = nonesterified fatty acids in plasma.