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  • Title: Body fat mass and basal metabolic rate in Dutch women before, during, and after pregnancy: a reappraisal of energy cost of pregnancy.
    Author: van Raaij JM, Schonk CM, Vermaat-Miedema SH, Peek ME, Hautvast JG.
    Journal: Am J Clin Nutr; 1989 May; 49(5):765-72. PubMed ID: 2718913.
    Abstract:
    Body weight, fat mass, and basal metabolic rate were measured longitudinally from early pregnancy until 2 mo postpartum in 57 healthy Dutch women; 23 of whom were also studied before pregnancy. Weight gain over pregnancy was 11.8 +/- 3.7 kg and weight gain from 12 wk gestation to delivery was 10.3 +/- 3.8 kg. Birth weights and placental weights were 3458 +/- 527 and 657 +/- 114 g, respectively. Gain in maternal fat stores over pregnancy was 2.0 +/- 2.6 kg and difference in fat mass from 12 wk gestation to 5 wk postpartum was 1.2 +/- 2.2 kg. The energy equivalent of the gain in fat stores, including costs of synthesizing, can be estimated as 22,000 kcal. The cumulative increment in basal metabolism over pregnancy was 34,350 +/- 30,000 kcal. When the energy equivalent of the gain in tissue other than fat stores is assumed to be approximately 11,750 kcal, total energy cost of pregnancy is at 68,100 +/- 38,560 kcal.
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