Table 3.
Plasma substrates during 60 min of cycling exercise in adrenalectomised subjects with saline (–ADR) or adrenaline (+ADR) infusion commencing at the onset of exercise
| Rest | 20 min | 45 min | 60 min | |
|---|---|---|---|---|
| FFA (mmol l−1) | ||||
| −ADR | 0.67 ± 0.06 | 0.53 ± 0.07* | 0.76 ± 0.08* | 0.68 ± 0.08* |
| +ADR | 0.63 ± 0.07 | 0.92 ± 0.11 | 1.04 ± 0.06 | 1.05 ± 0.09 |
| Glycerol (μmol l−1) | ||||
| −ADR | 107 ± 21 | 152 ± 17* | 250 ± 23* | 272 ± 35* |
| +ADR | 98 ± 10 | 237 ± 12 | 296 ± 36 | 333 ± 42 |
| βHydroxybutyrate (mmol l−1) | ||||
| −ADR | 0.23 ± 0.09 | 0.17 ± 0.05 | 0.21 ± 0.07 | 0.22 ± 0.08 |
| +ADR | 0.35 ± 0.11 | 0.25 ± 0.06 | 0.33 ± 0.09 | 0.38 ± 0.11 |
| Alanine (μmol l−1) | ||||
| −ADR | 122 ± 22 | 156 ± 11 | 172 ± 17 | 178 ± 11 |
| +ADR | 113 ± 19 | 166 ± 18 | 167 ± 17 | 173 ± 18 |
Values are means ±s.e.m. (n = 6).
*
Significantly different (P < 0.05) from +ADR.