Tags

Type your tag names separated by a space and hit enter

Energy requirements during pregnancy based on total energy expenditure and energy deposition.
Am J Clin Nutr 2004; 79(6):1078-87AJ

Abstract

BACKGROUND

Energy requirements during pregnancy remain controversial because of uncertainties regarding maternal fat deposition and reductions in physical activity.

OBJECTIVE

This study was designed to estimate the energy requirements of healthy underweight, normal-weight, and overweight pregnant women and to explore energetic adaptations to pregnancy.

DESIGN

The energy requirements of 63 women [17 with a low body mass index (BMI; in kg/m(2)), 34 with a normal BMI, and 12 with a high BMI] were estimated at 0, 9, 22, and 36 wk of pregnancy and at 27 wk postpartum. Basal metabolic rate (BMR) was measured by calorimetry, total energy expenditure (TEE) by doubly labeled water, and activity energy expenditure (AEE) as TEE - BMR. Energy deposition was calculated from changes in body protein and fat. Energy requirements equaled the sum of TEE and energy deposition.

RESULTS

BMR increased gradually throughout pregnancy at a mean (+/-SD) rate of 10.7 +/- 5.4 kcal/gestational week, whereas TEE increased by 5.2 +/- 12.8 kcal/gestational week, which indicated a slight decrease in AEE. Energy costs of pregnancy depended on BMI group. Although total protein deposition did not differ significantly by BMI group (mean for the 3 groups: 611 g protein), FM deposition did (5.3, 4.6, and 8.4 kg FM in the low-, normal-, and high-BMI groups; P = 0.02). Thus, energy costs differed significantly by BMI group (P = 0.02). In the normal-BMI group, energy requirements increased negligibly in the first trimester, by 350 kcal/d in the second trimester, and by 500 kcal/d in the third trimester.

CONCLUSION

Extra energy intake is required by healthy pregnant women to support adequate gestational weight gain and increases in BMR, which are not totally offset by reductions in AEE.

Authors+Show Affiliations

US Department of Agriculture/Agricultural Research Service Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA. nbutte@bcm.tmc.eduNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

15159239

Citation

Butte, Nancy F., et al. "Energy Requirements During Pregnancy Based On Total Energy Expenditure and Energy Deposition." The American Journal of Clinical Nutrition, vol. 79, no. 6, 2004, pp. 1078-87.
Butte NF, Wong WW, Treuth MS, et al. Energy requirements during pregnancy based on total energy expenditure and energy deposition. Am J Clin Nutr. 2004;79(6):1078-87.
Butte, N. F., Wong, W. W., Treuth, M. S., Ellis, K. J., & O'Brian Smith, E. (2004). Energy requirements during pregnancy based on total energy expenditure and energy deposition. The American Journal of Clinical Nutrition, 79(6), pp. 1078-87.
Butte NF, et al. Energy Requirements During Pregnancy Based On Total Energy Expenditure and Energy Deposition. Am J Clin Nutr. 2004;79(6):1078-87. PubMed PMID: 15159239.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Energy requirements during pregnancy based on total energy expenditure and energy deposition. AU - Butte,Nancy F, AU - Wong,William W, AU - Treuth,Margarita S, AU - Ellis,Kenneth J, AU - O'Brian Smith,E, PY - 2004/5/26/pubmed PY - 2004/6/16/medline PY - 2004/5/26/entrez SP - 1078 EP - 87 JF - The American journal of clinical nutrition JO - Am. J. Clin. Nutr. VL - 79 IS - 6 N2 - BACKGROUND: Energy requirements during pregnancy remain controversial because of uncertainties regarding maternal fat deposition and reductions in physical activity. OBJECTIVE: This study was designed to estimate the energy requirements of healthy underweight, normal-weight, and overweight pregnant women and to explore energetic adaptations to pregnancy. DESIGN: The energy requirements of 63 women [17 with a low body mass index (BMI; in kg/m(2)), 34 with a normal BMI, and 12 with a high BMI] were estimated at 0, 9, 22, and 36 wk of pregnancy and at 27 wk postpartum. Basal metabolic rate (BMR) was measured by calorimetry, total energy expenditure (TEE) by doubly labeled water, and activity energy expenditure (AEE) as TEE - BMR. Energy deposition was calculated from changes in body protein and fat. Energy requirements equaled the sum of TEE and energy deposition. RESULTS: BMR increased gradually throughout pregnancy at a mean (+/-SD) rate of 10.7 +/- 5.4 kcal/gestational week, whereas TEE increased by 5.2 +/- 12.8 kcal/gestational week, which indicated a slight decrease in AEE. Energy costs of pregnancy depended on BMI group. Although total protein deposition did not differ significantly by BMI group (mean for the 3 groups: 611 g protein), FM deposition did (5.3, 4.6, and 8.4 kg FM in the low-, normal-, and high-BMI groups; P = 0.02). Thus, energy costs differed significantly by BMI group (P = 0.02). In the normal-BMI group, energy requirements increased negligibly in the first trimester, by 350 kcal/d in the second trimester, and by 500 kcal/d in the third trimester. CONCLUSION: Extra energy intake is required by healthy pregnant women to support adequate gestational weight gain and increases in BMR, which are not totally offset by reductions in AEE. SN - 0002-9165 UR - https://www.unboundmedicine.com/medline/citation/15159239/Energy_requirements_during_pregnancy_based_on_total_energy_expenditure_and_energy_deposition_ L2 - https://academic.oup.com/ajcn/article-lookup/doi/10.1093/ajcn/79.6.1078 DB - PRIME DP - Unbound Medicine ER -