title: Anthropometric measured fat-free mass as essential determinant of resting energy expenditure for pregnant and non-pregnant women.
abstract: OBJECTIVE
  There is conflicting evidence as to whether anthropometric parameters are related to resting energy expenditure (REE) during pregnancy. The aim of this prospective longitudinal study was to precisely assess a major anthropometric determinant of REE for pregnant and non-pregnant women with verification of its use as a possible predictor.
  
  
  METHODS
  One hundred fifty-two randomly recruited, healthy, pregnant Czech women were divided into groups G1 and G2. G1 (n = 31) was used for determination of the association between anthropometric parameters and REE. G2 (n = 121) and a group of non-pregnant women (G0; n = 24) were used for verification that observed relations were suitable for the prediction of REE during pregnancy. The women in the study groups were measured during four periods of pregnancy for REE by indirect calorimetry and anthropometric parameters after 12 h of fasting.
  
  
  RESULTS
  Associations were found in all groups between measured REE by indirect calorimetry and anthropometric parameters such as weight, fat mass, fat-free mass (FFM), body surface area, and body mass index (P < 0.0001). The best derived predictor, REE/FFM (29.5 kcal/kg, r = 0.70, P < 0.0001), in group G1 was statistically verified in group G2 and compared with G0.
  
  
  CONCLUSIONS
  Anthropometrically measured FFM with its metabolically active components is an essential determinant of REE in pregnancy. REE/FFM can be used for the prediction of REE in pregnant and non-pregnant woman.
authors.affiliation: Faculty of Pharmacy, Charles University of Prague, Hradec Kralove, Czech Republic. hronek@faf.cuni.cz
authors.forename: Miloslav
authors.initials: M
authors.lastname: Hronek
authors.forename: Petr
authors.initials: P
authors.lastname: Klemera
authors.forename: Jindrich
authors.initials: J
authors.lastname: Tosner
authors.forename: Dana
authors.initials: D
authors.lastname: Hrnciarikova
authors.forename: Zdenek
authors.initials: Z
authors.lastname: Zadak
mesh_terms: D000273:Adipose Tissue; D000328:Adult; D000886:Anthropometry; D001481:Basal Metabolism; D001823:Body Composition; D001825:Body Fluid Compartments; D001837:Body Weights and Measures; D002153:Calorimetry, Indirect; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D011247:Pregnancy; D011446:Prospective Studies