Figure 2.
A, Trajectories of cardiorespiratory fitness (CRF), expressed by estimated maximal oxygen uptake (VO 2max; in mL/min per kg), through adolescence to young adulthood by categories of gestational age. B, Proportion of individuals with poor CRF (defined by age‐ and sex‐specific health‐related cutoff values of VO 2max) through adolescence to young adulthood, by categories of gestational age. Mean CRF levels or proportions with poor CRF at each age were estimated with generalized estimating equations models adjusted for sex, age×sex interactions, cohort, birth weight Z scores, socioeconomic status, delivery mode, breastfeeding, and maternal age, body mass index, and smoking. Error bars indicate 95% CIs.