A, mean stretch–pressure relationship in 3‐day‐old rats. B, mean stretch–tension relationship in 21‐day‐old rats. C, mean stretch–tension relationship in 6‐month‐old rats. Inset shows the mean B values or slope (derived for the exponential fit) from each experimental group. MUN, maternal undernutrition. The number of dams is shown in parentheses (from each dam 2 pups of each sex were averaged). Bar graphs represent the mean, and error bars are SEM. Mean differences between Control and MUN groups are shown below each graph together with confidence intervals (*
P < 0.05 when compared to sex‐ and age‐matched Control rats).