title: Gestational weight gain and early postpartum weight retention in a prospective cohort of Alberta women.
abstract: OBJECTIVE
  To describe gestational weight gain during pregnancy, adherence to Health Canada 2010 Gestational Weight Gain Guidelines, and the effects of weight gain on postpartum weight retention in women with different pre-pregnancy body mass indices.
  
  
  METHODS
  Body weight data were collected from women during pregnancy and in the early postpartum period as part of this prospective cohort study; analyses are presented for the first 600 women recruited. Multilinear regression was used to assess associations between pre-pregnancy BMI, total gestational weight gain, and postpartum weight retention. Multinomial regression was used to assess adherence to guidelines for total weight gain and rates of weekly weight gain.
  
  
  RESULTS
  Women who gained above recommendations were more likely to be overweight (OR 5.5; 95% CI 2.7 to 10.9, P < 0.001) or obese (OR 6.5; 95% CI 2.5 to 16.5, P < 0.001) before pregnancy, to have a history of smoking (OR 1.96; 95% CI 1.18 to 3.26,  P = 0.01), or to be nulliparous (OR 2.23; 95% CI 0.99 to 5.05,  P = 0.054). Women who gained weight above recommendations (P < 0.001) and women with low income (P < 0.01) were more likely to retain higher body weight at three months postpartum. Seventy-one percent of participants exceeded recommended rates of weekly weight gain; average weekly weight gain of these women was 0.65 ± 0.17 kg.
  
  
  CONCLUSIONS
  Pre-pregnancy BMI is a significant predictor of excessive weight gain in pregnancy. Higher gestational weight gain predisposes women to higher postpartum weight retention across all BMI categories. Future studies are warranted to design tools and intervention programs to monitor weight gain during pregnancy.
authors: Department of Agricultural, Food and Nutritional Sciences, Division of Human Nutrition, University of Alberta, Edmonton AB.
authors: Fatheema
authors: F
authors: Begum
authors: Ian
authors: I
authors: Colman
authors: Linda J
authors: LJ
authors: McCargar
authors: Rhonda C
authors: RC
authors: Bell
mesh_terms: D000293:Adolescent; D000328:Adult; D000416:Alberta / Q000453:epidemiology; D015992:Body Mass Index; D015331:Cohort Studies; D005260:Female; D005865:Gestational Age; D006801:Humans; D009765:Obesity / Q000453:epidemiology; D050177:Overweight / Q000453:epidemiology; D049590:Postpartum Period; D011247:Pregnancy; D011446:Prospective Studies; D015430:Weight Gain