Format

Send to

Choose Destination
Can J Diet Pract Res. 2018 Nov 1;79(4):191-195. doi: 10.3148/cjdpr-2018-016. Epub 2018 Jul 16.

Changes in Energy Metabolism from Prepregnancy to Postpartum: A Case Report.

Author information

1
a Department of Agricultural, Food and Nutritional Science, 2-111 Li KaShing Center for Health Research Innovation, University of Alberta, Edmonton, AB.
2
b Department of Agricultural, Food and Nutritional Science, 4-126B Li KaShing Center for Health Research Innovation, University of Alberta, Edmonton, AB.
3
c Department of Agricultural, Food and Nutritional Science, Division of Human Nutrition, 2-021E Li KaShing Center for Health Research Innovation, University of Alberta, Edmonton, AB.

Abstract

PURPOSE:

Energy metabolism is at the core of maintaining healthy body weights. Likewise, the assessment of energy needs is essential for providing adequate dietary advice. We explored differences in energy metabolism of a primigravid woman (age: 30 years) at 1 month prepregnancy ("baseline"), during pregnancy (33 weeks), and at 3 and 9 months postpartum. Measured versus estimated energy expenditure were compared using equations commonly used in clinical practice.

METHODS:

Energy metabolism was measured using a state-of-the-art whole body calorimetry unit (WBCU). Body composition (dual-energy X-ray absorptiometry), energy intake (3-day food records), physical activity (Baecke questionnaire), and breastmilk volume/breastfeeding energy expenditure (24-hours of infant test-retest weighing) were assessed.

RESULTS:

This case report is the first to assess energy expenditure in 3 different stages of a woman's life (prepregnancy, pregnancy, and postpartum) using WBCU. We noticed that weight and energy needs returned to prepregnancy values at 9 months postpartum, although a pattern of altered body composition emerged (higher fat/lean ratio) without changes in physical activity and energy intake. For this woman, current recommendations for energy overestimated actual needs by 350 kcal/day (9 months postpartum).

CONCLUSION:

It is likely that more accurate approaches are needed to estimate energy needs during and postpregnancy, with targeted interventions to optimize body composition.

PMID:
30014722
DOI:
10.3148/cjdpr-2018-016

Supplemental Content

Full text links

Icon for Atypon
Loading ...
Support Center