Table 1.
Tracer infusion rates and protein and leucine intakes in the 13C-labeled (13C-WP and 13C-CAS) and unlabeled (UL-WP and UL-CAS) WP and CAS studies
| 13C-WP | UL-WP | 13C-CAS | UL-CAS | UL-CAS 30 g | |
|---|---|---|---|---|---|
| i.v. [13C]leucine, μmol⋅kg−1⋅min−1 | — | 0.059 ± 0.006 | — | 0.063 ± 0.003 | 0.060 ± 0.002 |
| i.v. [2H3]leucine, μmol⋅kg−1⋅min−1 | 0.046 ± 0.004 | — | 0.040 ± 0.015 | — | — |
| Dietary protein intake, g⋅kg−1 | 0.45 ± 0.04 | 0.45 ± 0.05 | 0.61 ± 0.03 | 0.57 ± 0.01 | 0.45 ± 0.02 |
| Dietary leucine intake, μmol⋅kg−1 | 382 ± 32 | 359 ± 41 | 380 ± 20 | 379 ± 3 | 291 ± 13 |
| Dietary [13C]leucine enrichment, MPE | 3.42 ± 0.27 | — | 3.40 ± 0.10 | — | — |
Values are means ± SD. MPE, mol percent excess.