A, oxygen delivery rate to the hindlimb, as well as net hindlimb uptakes rates for oxygen (B), glucose (C), lactate (D) and total amino acids (E) (AA) in CON (white bars, n = 8) and IUGR (black bars, n = 11) fetal sheep at 134 days of gestation. All uptake rates and oxygen delivery normalized to 100 g of hindlimb weight. Values represent the mean ± SEM. *
P < 0.05 by Student's t test or the Mann–Whitney test. F, linear relationship between total amino acid uptake rate and hindlimb weight. IUGR fetuses (squares) and CON fetuses (triangles) with correlation coefficients and P values are shown.