title: Body composition and energy metabolism in pregnancy.
abstract: The objective of the study was to measure energy metabolism and body composition during pregnancy and postpartum, compared to non-pregnant women, using non-invasive techniques. A longitudinal study of eight normotensive pregnant women was carried out at 19 +/- 1 and 36+/-1 weeks gestation, and postpartum. A cross-sectional study was also performed comparing postpartum to 12 non-pregnant women. Indirect calorimetry was performed while fasting to measure basal metabolic rate (BMR) and postprandially to measure diet-induced thermogenesis (DIT). Body composition consists of fat mass, lean body mass (LBM), and total body water (TBW) and was measured by bio-electrical impedance. Insulin resistance was indirectly assessed by glucose and insulin concentration and DIT.
authors.affiliation: Department of Medicine, University of New South Wales, Sydney, Australia.
authors.forename: A
authors.initials: A
authors.lastname: Martin
authors.forename: M A
authors.initials: MA
authors.lastname: Brown
authors.forename: A J
authors.initials: AJ
authors.lastname: O'Sullivan
mesh_terms: D000328:Adult; D001823:Body Composition; D002153:Calorimetry, Indirect; D003430:Cross-Sectional Studies; D004734:Energy Metabolism; D005260:Female; D006801:Humans; D049590:Postpartum Period / Q000502:physiology; D011247:Pregnancy / Q000502:physiology*; D011262:Pregnancy Trimester, Second; D011263:Pregnancy Trimester, Third