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American Journal of Clinical Nutrition, Vol 49, 765-772, Copyright © 1989 by The American Society for Clinical Nutrition, Inc
ORIGINAL RESEARCH COMMUNICATIONS |
JM van Raaij, CM Schonk, SH Vermaat-Miedema, ME Peek and JG Hautvast
Department of Human Nutrition, Agricultural University, Wageningen, The Netherlands.
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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