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Energy Intake Requirements in Pregnancy
Jasper Most1, Sheila Dervis2, Francois Haman2
1Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA.
Nutrients
|August 9, 2019
Summary
Pregnancy energy needs balance intake with expenditure and storage. Understanding these factors helps optimize nutrition for healthy maternal and fetal outcomes, guiding weight management during gestation.
Area of Science:
- Reproductive biology
- Human physiology
- Nutritional science
Background:
- Pregnancy energy requirements are influenced by maternal metabolism, physical activity, and fetal growth.
- Energy balance in pregnancy is defined as energy intake equaling energy expenditure plus energy storage.
- Accurate assessment of these components is crucial for establishing appropriate dietary recommendations.
Purpose of the Study:
- To analyze the components of energy expenditure and storage during pregnancy.
- To discuss how these components influence energy intake requirements.
- To review existing prediction equations for energy intake and their application in managing gestational weight gain.
Main Methods:
- Review of physiological changes affecting resting metabolic rate during pregnancy.
- Analysis of factors influencing physical activity-related energy expenditure.
- Examination of maternal body composition and its impact on energy storage requirements.
- Evaluation of energy content in fetal, placental, and maternal tissue deposition.
Main Results:
- Resting metabolic rate increases due to elevated body mass and physiological adaptations.
- Energy storage needs vary significantly based on maternal pre-pregnancy body mass index.
- Fetal and placental energy deposition show minimal variation across pregnancies.
- Differences in maternal fat accumulation significantly impact overall energy intake needs.
Conclusions:
- Individualized energy intake recommendations are essential for healthy pregnancies.
- Maternal pre-pregnancy weight is a key determinant of appropriate gestational weight gain and energy needs.
- Understanding the dynamics of energy balance is critical for preventing adverse pregnancy outcomes.
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