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. 2023 Feb 7;12(3):401–412. doi: 10.1002/psp4.12924

FIGURE 1.

FIGURE 1

Predicted fraction of adult FFM (FRFFM) in males and females from neonates to young adults based on postmenstrual age, sex, total body mass, and height covariates in the pooled data set. The arrows show the exponential drop from FMAT_PRE to FFMIN. In males, FRFFM rises approaching adult fat‐free mass values caused by the increasing influence of the child component of the fractional model for fat‐free mass and the diminishing influence of the neonate and infant component of the fractional model for fat‐free mass. Parameter values are shown in Table 1. FFMIN, baseline component of the fractional model for fat‐free mass; FMAT_MAX, asymptotic estimate of the adult fat free mass prediction; FMAT_PRE, lower asymptote of neonate and infant component of the fractional model for fat‐free mass estimated in a 24‐week premature neonate; FRFFM, fractional model for fat‐free mass; TFF_PRE, half‐life of decrease of the neonate and infant component of the fractional model for fat‐free mass contribution to the fractional model for fat‐free mass.