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Validation of Dietary Reference Intakes for predicting energy requirements in elementary school-age children

BACKGROUND/OBJECTIVES: Dietary Reference Intakes (DRI) for energy are derived from total energy expenditure (TEE) measured using the doubly labelled water (DLW) method. The objective of this study was to assess the validity of DRI for predicting the energy requirements of elementary school-age child...

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Autores principales: Kim, Eun-Kyung, Ndahimana, Didace, Ishikawa-Takata, Kazuko, Lee, Sangjik, Kim, Hyungryul, Lim, Kiwon, Lee, In-Sook, Tanaka, Shigeho, Kim, Ye-Jin, Choi, Yeon-Jung, Ju, Mun-Jeong, Park, Jonghoon
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Korean Nutrition Society and the Korean Society of Community Nutrition 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6078864/
https://www.ncbi.nlm.nih.gov/pubmed/30090171
http://dx.doi.org/10.4162/nrp.2018.12.4.336
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author Kim, Eun-Kyung
Ndahimana, Didace
Ishikawa-Takata, Kazuko
Lee, Sangjik
Kim, Hyungryul
Lim, Kiwon
Lee, In-Sook
Tanaka, Shigeho
Kim, Ye-Jin
Choi, Yeon-Jung
Ju, Mun-Jeong
Park, Jonghoon
author_facet Kim, Eun-Kyung
Ndahimana, Didace
Ishikawa-Takata, Kazuko
Lee, Sangjik
Kim, Hyungryul
Lim, Kiwon
Lee, In-Sook
Tanaka, Shigeho
Kim, Ye-Jin
Choi, Yeon-Jung
Ju, Mun-Jeong
Park, Jonghoon
author_sort Kim, Eun-Kyung
collection PubMed
description BACKGROUND/OBJECTIVES: Dietary Reference Intakes (DRI) for energy are derived from total energy expenditure (TEE) measured using the doubly labelled water (DLW) method. The objective of this study was to assess the validity of DRI for predicting the energy requirements of elementary school-age children. SUBJECTS/METHODS: The present study involved 25 elementary school-age children aged between 9 and 11 years. TEE was assessed by the DLW method, and the results were compared with the TEE predicted by the DRI equations in order to evaluate accuracy. RESULTS: The subjects' TEE measured by the DLW method was 1,925.2 ± 380.9 kcal/day in boys and 1,930.0 ± 279.4 kcal/day in girls, whereas resting energy expenditure was 1,220.2 ± 176.9 kcal/day in boys and 1,245.9 ± 171.3 kcal/day for girls. The physical activity level was 1.58 ± 0.20 in boys and 1.55 ± 0.13 in girls. The mean bias between the predicted and measured TEE was 12.6% in boys and −1.6% in girls, and the percentage of accurate predictions was 28.6% and 63.6%, respectively. In boys, the equation resulted in underprediction of TEE among the subjects having low TEE values, whereas there was overprediction among subjects having high TEE values as shown by the Bland-Altman plot. On the contrary, this proportional bias was not observed in girls. CONCLUSIONS: The findings of this study suggest that the DRI equation for energy could result in the overestimation of energy requirements in elementary school-age boys. In the case of girls, the equations could be accurate at the group level. However, the DRI appears to be invalid for individual girls, as more than one third of girls had their TEE inaccurately predicted. We recommend more studies for confirmation of these results.
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spelling pubmed-60788642018-08-08 Validation of Dietary Reference Intakes for predicting energy requirements in elementary school-age children Kim, Eun-Kyung Ndahimana, Didace Ishikawa-Takata, Kazuko Lee, Sangjik Kim, Hyungryul Lim, Kiwon Lee, In-Sook Tanaka, Shigeho Kim, Ye-Jin Choi, Yeon-Jung Ju, Mun-Jeong Park, Jonghoon Nutr Res Pract Original Research BACKGROUND/OBJECTIVES: Dietary Reference Intakes (DRI) for energy are derived from total energy expenditure (TEE) measured using the doubly labelled water (DLW) method. The objective of this study was to assess the validity of DRI for predicting the energy requirements of elementary school-age children. SUBJECTS/METHODS: The present study involved 25 elementary school-age children aged between 9 and 11 years. TEE was assessed by the DLW method, and the results were compared with the TEE predicted by the DRI equations in order to evaluate accuracy. RESULTS: The subjects' TEE measured by the DLW method was 1,925.2 ± 380.9 kcal/day in boys and 1,930.0 ± 279.4 kcal/day in girls, whereas resting energy expenditure was 1,220.2 ± 176.9 kcal/day in boys and 1,245.9 ± 171.3 kcal/day for girls. The physical activity level was 1.58 ± 0.20 in boys and 1.55 ± 0.13 in girls. The mean bias between the predicted and measured TEE was 12.6% in boys and −1.6% in girls, and the percentage of accurate predictions was 28.6% and 63.6%, respectively. In boys, the equation resulted in underprediction of TEE among the subjects having low TEE values, whereas there was overprediction among subjects having high TEE values as shown by the Bland-Altman plot. On the contrary, this proportional bias was not observed in girls. CONCLUSIONS: The findings of this study suggest that the DRI equation for energy could result in the overestimation of energy requirements in elementary school-age boys. In the case of girls, the equations could be accurate at the group level. However, the DRI appears to be invalid for individual girls, as more than one third of girls had their TEE inaccurately predicted. We recommend more studies for confirmation of these results. The Korean Nutrition Society and the Korean Society of Community Nutrition 2018-08 2018-07-25 /pmc/articles/PMC6078864/ /pubmed/30090171 http://dx.doi.org/10.4162/nrp.2018.12.4.336 Text en ©2018 The Korean Nutrition Society and the Korean Society of Community Nutrition http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Research
Kim, Eun-Kyung
Ndahimana, Didace
Ishikawa-Takata, Kazuko
Lee, Sangjik
Kim, Hyungryul
Lim, Kiwon
Lee, In-Sook
Tanaka, Shigeho
Kim, Ye-Jin
Choi, Yeon-Jung
Ju, Mun-Jeong
Park, Jonghoon
Validation of Dietary Reference Intakes for predicting energy requirements in elementary school-age children
title Validation of Dietary Reference Intakes for predicting energy requirements in elementary school-age children
title_full Validation of Dietary Reference Intakes for predicting energy requirements in elementary school-age children
title_fullStr Validation of Dietary Reference Intakes for predicting energy requirements in elementary school-age children
title_full_unstemmed Validation of Dietary Reference Intakes for predicting energy requirements in elementary school-age children
title_short Validation of Dietary Reference Intakes for predicting energy requirements in elementary school-age children
title_sort validation of dietary reference intakes for predicting energy requirements in elementary school-age children
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6078864/
https://www.ncbi.nlm.nih.gov/pubmed/30090171
http://dx.doi.org/10.4162/nrp.2018.12.4.336
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