Table 3.
Phenyalanine and Tyrosine Kinetics
| LOW-FIT (n = 5) | FIT (n = 6) | ||||||
| BL (D4) |
EX1 (D7) |
EX2 (D11) |
BL (D4) |
EX1 (D7) |
EX2 (D11) |
P-values (Group × Time Effect) | |
| Qp (umol·kgFFM-1·h-1)a |
51.6 ± 7.0 | 48.7 ± 3.1 | 50.0 ± 6.2 | 55.2 ± 7.1 | 55.4 ± 3.9 | 54.7 ± 8.0 | 0.73 |
| Qpt (umol·kgFFM-1·h-1)b |
7.6 ± 1.9 | 6.2 ± 1.6 | 5.9 ± 1.7 | 6.0 ± 2.1 | 4.9 ± 2.6 | 4.8 ± 1.4 | 0.97 |
| Qp - Qpt (umol·kgFFM-1·h-1)c |
44.1 ± 6.3 | 42.4 ± 2.6 | 44.1 ± 5.7 | 49.3 ± 6.1 | 50.5 ± 4.3 | 49.9 ± 7.6 | 0.62 |
| (Qp - Qpt) - Qp (umol·kgFFM-1·h-1)d |
-7.5 ± 1.9 | -6.3 ± 1.6 | -5.9 ± 1.7 | -6.0 ± 2.1 | -4.9 ± 2.6 | -4.8 ± 1.4 | 0.29 |
a whole-body protein breakdown
b net protein oxidation (conversion rate from phenylalanine to tyrosine)
c whole-body protein synthesis
d net protein balance