Maternal fat mass at mid-pregnancy and birth weight in Brazilian XXXX .

@entity1 @entity413 @entity1386
BACKGROUND: The relationship between maternal body composition and foetal development is unclear. AIM: To determine the relationship between maternal body composition [fat mass (FM) and @entity1386 ( @entity1386 )] and foetal growth and birth weight, independent of potential confounding factors. SUBJECTS AND METHODS: This study consisted of 92 @entity1 , normal and overweight/obese, recruited from the Instituto Fernandes Figueira in Rio de Janeiro, Brazil. Body composition (FM and @entity1386 ) was estimated using bioelectrical impedance. Foetal growth was assessed using serial ultrasound measurements at the second and third trimester and @entity1 's weight and length were measured at birth. Multiple linear regression analyses were used to determine the association between maternal FM and @entity1386 and birth weight adjusted for gestational age (BWt) and change in estimated foetal weight (  EFW), controlling for @entity1 gender, maternal serum @entity413 , energy intake, parity, height and income. RESULTS: Maternal FM, but not @entity1386 , was positively associated with BWt (p   =   0.02) and borderline with   EFW (p   =   0.05). FM expressed as a percentage of body weight (%FM) showed a significant positive association with BWt (p   <   0.001) and   EFW (p   <   0.01). Using backward linear regression analysis, FM was a significant predictor of BWt (p   <   0.001) and   EFW (p   =   0.03), but not change in femur length. CONCLUSION: In this small sample of normal and overweight/obese @entity1 , maternal FM at mid-pregnancy is associated with neonatal BW and foetal growth.
