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dc.contributor.authorFattah, Chro
dc.contributor.authorFarah, Nadine
dc.contributor.authorBarry, Sinead C
dc.contributor.authorO'Connor, Norah
dc.contributor.authorStuart, Bernard
dc.contributor.authorTurner, Michael J
dc.date.accessioned2012-02-01T10:58:43Z
dc.date.available2012-02-01T10:58:43Z
dc.date.issued2012-02-01T10:58:43Z
dc.identifier.citationActa Obstet Gynecol Scand. 2010 Jul;89(7):952-5.en_GB
dc.identifier.issn1600-0412 (Electronic)en_GB
dc.identifier.issn0001-6349 (Linking)en_GB
dc.identifier.pmid20380598en_GB
dc.identifier.doi10.3109/00016341003801706en_GB
dc.identifier.urihttp://hdl.handle.net/10147/208048
dc.description.abstractOBJECTIVE: Previous studies on weight gain in pregnancy suggested that maternal weight on average increased by 0.5-2.0 kg in the first trimester of pregnancy. This study examined whether mean maternal weight or body composition changes in the first trimester of pregnancy. DESIGN: Prospective observational study. POPULATION: We studied 1,000 Caucasian women booking for antenatal care in the first trimester of pregnancy. SETTING: Large university teaching hospital. METHODS: Maternal height and weight were measured digitally in a standardized way and Body Mass Index (BMI) was calculated. Maternal body composition was measured using segmental multifrequency Bioelectrical Impedance Analysis (BIA). Sonographic examination confirmed the gestational age and a normal ongoing singleton pregnancy in all subjects. MAIN OUTCOME MEASURES: Maternal weight, maternal body composition. RESULTS: The mean BMI was 25.7 kg/m(2) and 19.0% of the women were in the obese category (> or =30.0 kg/m(2)). Cross-sectional analysis by gestational age showed that there was no change in mean maternal weight, BMI, total body water, fat mass, fat-free mass or bone mass before 14 weeks gestation. CONCLUSIONS: Contrary to previous reports, mean maternal weight and mean body composition values remain unchanged in the first trimester of pregnancy. This has implications for guidelines on maternal weight gain during pregnancy. We also recommend that calculation of BMI in pregnancy and gestational weight gain should be based on accurate early pregnancy measurements, and not on self-reported or prepregnancy measurements.
dc.language.isoengen_GB
dc.subject.meshAdulten_GB
dc.subject.meshAnalysis of Varianceen_GB
dc.subject.meshBody Composition/*physiologyen_GB
dc.subject.mesh*Body Mass Indexen_GB
dc.subject.meshBody Weight/*physiologyen_GB
dc.subject.meshCross-Sectional Studiesen_GB
dc.subject.meshFemaleen_GB
dc.subject.meshFetal Development/physiologyen_GB
dc.subject.meshHumansen_GB
dc.subject.meshMaternal Welfareen_GB
dc.subject.meshPregnancyen_GB
dc.subject.meshPregnancy Trimester, First/*physiologyen_GB
dc.subject.meshPrenatal Care/methodsen_GB
dc.subject.meshProbabilityen_GB
dc.subject.meshProspective Studiesen_GB
dc.subject.meshReference Valuesen_GB
dc.subject.meshTime Factorsen_GB
dc.subject.meshUltrasonography, Prenatalen_GB
dc.subject.meshWeight Gain/physiologyen_GB
dc.titleMaternal weight and body composition in the first trimester of pregnancy.en_GB
dc.contributor.departmentUCD Centre for Human Reproduction, Coombe Women and Infants University Hospital, , Dublin, Ireland.en_GB
dc.identifier.journalActa obstetricia et gynecologica Scandinavicaen_GB
dc.description.provinceLeinster
html.description.abstractOBJECTIVE: Previous studies on weight gain in pregnancy suggested that maternal weight on average increased by 0.5-2.0 kg in the first trimester of pregnancy. This study examined whether mean maternal weight or body composition changes in the first trimester of pregnancy. DESIGN: Prospective observational study. POPULATION: We studied 1,000 Caucasian women booking for antenatal care in the first trimester of pregnancy. SETTING: Large university teaching hospital. METHODS: Maternal height and weight were measured digitally in a standardized way and Body Mass Index (BMI) was calculated. Maternal body composition was measured using segmental multifrequency Bioelectrical Impedance Analysis (BIA). Sonographic examination confirmed the gestational age and a normal ongoing singleton pregnancy in all subjects. MAIN OUTCOME MEASURES: Maternal weight, maternal body composition. RESULTS: The mean BMI was 25.7 kg/m(2) and 19.0% of the women were in the obese category (> or =30.0 kg/m(2)). Cross-sectional analysis by gestational age showed that there was no change in mean maternal weight, BMI, total body water, fat mass, fat-free mass or bone mass before 14 weeks gestation. CONCLUSIONS: Contrary to previous reports, mean maternal weight and mean body composition values remain unchanged in the first trimester of pregnancy. This has implications for guidelines on maternal weight gain during pregnancy. We also recommend that calculation of BMI in pregnancy and gestational weight gain should be based on accurate early pregnancy measurements, and not on self-reported or prepregnancy measurements.


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