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

Autor:	Sangjik Lee, Yeon Jung Choi, In Sook Lee, Kazuko Ishikawa-Takata, Shigeho Tanaka, Hyungryul Kim, Didace Ndahimana, Ye-Jin Kim, Eun-Kyung Kim, Jong Hoon Park, Mun Jeong Ju, Kiwon Lim
Jazyk:	angličtina
Rok vydání:	2018
Předmět:	Nutrition and Dietetics School age child business.industry Energy requirement nutrition requirements Dietary Reference Intake Environmental health energy expenditure Medicine Nutrition research Erratum Child business human activities Original Research Food Science
Zdroj:	Nutrition Research and Practice
ISSN:	2005-6168 1976-1457
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a3deae8fcf6b4d1cf2953d8d500c8e6 http://europepmc.org/articles/PMC6172172 Zobrazit plný text záznamu