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The aim of this study was to assess the effects of an experimental formula (EF) with added whey protein-lipid concentrate (5 g/L; source of bovine milk fat globule membrane [bMFGM]) on growth, body composition, and safety through 24 mo of age in term infants.This was a double-blinded, randomized controlled trial conducted in Santiago, Chile. Infants were enrolled before 120 d and randomized to receive standard cow's milk-based formula (SF) or EF through the first year of life. Breastfed infants were the reference (HM). Growth (weight-for-age [WAZ], length-for-age [LAZ], BMI-for-age [BAZ], headcircumference-for-age [HCZ] z-scores); body composition (fat mass [FM] and fat-free mass, percentage body fat [%BF]); and adverse events through day 730 were recorded. Outcome trajectories were analyzed using a single generalized estimating equation testing the interaction between group and visit.We recruited 582 infants (HM = 235; SF = 174; EF = 173); 478 (80%) completed the study. At baseline, only WAZ was different between the formula groups (0.14 lower in EF versus SF group, P = 0.035). WAZ, LAZ, and BAZ trajectories were higher from baseline to days 365 and 730 in EF or SF compared with HM (all P0.05). No differences in changes in body composition were observed between the formula groups. For EF versus HM, %BF was lower at day 180; however, this difference reversed from day 365. Fat-free mass was higher in formula groups compared with HM at all time points. No group difference in adverse event incidence rate was detected.During the first 2 y of life, infant formula with added bMFGM supports typical growth and safety compared with a standard formula. |
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