Estimation of protein requirements in Indian pregnant women using a whole-body potassium counter

Kuriyan, R., Naqvi, S., Bhat, K. G., Thomas, T., Thomas, A., George, S., Nagarajarao, S. C., Sachdev, H. S., Preston, T. and Kurpad, A. V. (2019) Estimation of protein requirements in Indian pregnant women using a whole-body potassium counter. American Journal of Clinical Nutrition, 109(4), pp. 1064-1070. (doi: 10.1093/ajcn/nqz011) (PMID:30982859) (PMCID:PMC6517275)

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Abstract

Background: The 2007 World Health Organization/Food and Agriculture Organization/United Nations University (WHO/FAO/UNU) recommendation for the Estimated Average Requirement (EAR) of additional protein during pregnancy for a gestational weight gain (GWG) of 12 kg (recalculated from a GWG of 13.8 kg) is 6.7 and 21.7 g/d in the second and the third trimester, respectively. This EAR is based on measurements of potassium accretion in high-income country (HIC) pregnant women. It is not known if low- to middle-income country, but well-nourished, pregnant women have comparable requirements. Objective: We aimed to estimate total body potassium (TBK) accretion during pregnancy in Indian pregnant women, using a whole-body potassium counter (WBKC), to measure their additional protein EAR. Methods: Well-nourished pregnant women (20–40 y, n = 38, middle socioeconomic stratum) were recruited in the first trimester of pregnancy. Anthropometric, dietary, and physical activity measurements, and measurements of TBK using a WBKC, were performed at each trimester and at birth. Results: The mid-trimester weight gain was 2.7 kg and 8.0 kg in the second and the third trimester, respectively, for an average 37-wk GWG of 10.7 kg and a mean birth weight of 3.0 kg. Protein accretion was 2.7 and 5.7 g/d, for an EAR of 8.2 and 18.9 g/d in the second and the third trimester, respectively. The additional protein EAR, calculated for a GWG of 12 kg, was 9.1 and 21.2 g/d in the second and the third trimester, respectively. Conclusion: The additional protein requirements of well-nourished Indian pregnant women for a GWG of 12 kg in the second and third trimesters were similar to the recalculated 2007 WHO/FAO/UNU requirements for 12 kg.

Item Type:Articles
Additional Information:Supported by Department of Biotechnology, Government of India grant 102/IFD/SAN/3030/2014-2015 (to RK). AVK is a Margdarshi Fellow of the India Alliance.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Preston, Professor Tom
Authors: Kuriyan, R., Naqvi, S., Bhat, K. G., Thomas, T., Thomas, A., George, S., Nagarajarao, S. C., Sachdev, H. S., Preston, T., and Kurpad, A. V.
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:American Journal of Clinical Nutrition
Publisher:Oxford University Press
ISSN:0002-9165
ISSN (Online):1938-3207
Published Online:15 April 2019
Copyright Holders:Copyright © 2019 American Society for Nutrition
First Published:First published in American Journal of Clinical Nutrition 109(4):1064-1070
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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