Weight/length ratio references and newborn body composition estimation at birth from a Brazilian cohort

Objectives: The objective was to calculate weight/length (W/L) ratio values and percentiles by sex and gestational age (GA) to estimate fat mass (FM), fat-free mass (FFM) and body fat percentage (BF%) as well as to compare these indices in preterm, small (SGA), and large (LGA) for GA, stunted and wa...

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Autores principales:	Carlos Grandi, Livia dos S. Rodrigues, Davi C. Aragon, Fabio Carmona, Viviane C. Cardoso
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Anthropometry Body composition Nutrition assessment Weight/length ratio Fat mass Pediatrics RJ1-570
Acceso en línea:	https://doaj.org/article/c1786d1c1eca4c769134092021d28815
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spelling	oai:doaj.org-article:c1786d1c1eca4c769134092021d288152021-11-06T04:12:35ZWeight/length ratio references and newborn body composition estimation at birth from a Brazilian cohort0021-755710.1016/j.jped.2020.12.004https://doaj.org/article/c1786d1c1eca4c769134092021d288152021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0021755721000279https://doaj.org/toc/0021-7557Objectives: The objective was to calculate weight/length (W/L) ratio values and percentiles by sex and gestational age (GA) to estimate fat mass (FM), fat-free mass (FFM) and body fat percentage (BF%) as well as to compare these indices in preterm, small (SGA), and large (LGA) for GA, stunted and wasted infants from a Brazilian cohort of newborns, comparing with the INTERGROWTH-21st. Methods: Secondary, cross-sectional analysis of data obtained of 7427 live-born infants from the BRISA Cohort Study in the city of Ribeirão Preto, SP, Brazil in 2010. For body composition estimation, W/L ratio was used in multiple regression models. The 3rd, 50th, and 97th percentiles for W/L ratio and body composition measures (FM, FFM, and BF%) were calculated using fractional polynomial regression models. Results: Average W/L ratio was 6.50 kg/m (SD 0.87), while for FM, BF%, and FFM the corresponding values were 359.64 g (145.76), 10.90% (3.05) and 2798.84 g (414.84), respectively. SGA (< 3rd percentile), and wasted infants showed the lowest W/L ratios and measures of body composition. The 3rd, 50th, and 97th percentiles charts of W/L, FM, BF%, and FFM by GA and sex are presented. Conclusions: W/L ratio values of the RP-BRISA Cohort are higher than IG-21st. SGA (< 3rd) and wasted infants showed the lowest W/L ratio and measures of body composition. The body composition references presented here could be used to refine the nutritional assessment of Brazilian newborns and to facilitate comparisons across populations.Carlos GrandiLivia dos S. RodriguesDavi C. AragonFabio CarmonaViviane C. CardosoElsevierarticleAnthropometryBody compositionNutrition assessmentWeight/length ratioFat massPediatricsRJ1-570ENJornal de Pediatria, Vol 97, Iss 6, Pp 610-616 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Anthropometry Body composition Nutrition assessment Weight/length ratio Fat mass Pediatrics RJ1-570
spellingShingle	Anthropometry Body composition Nutrition assessment Weight/length ratio Fat mass Pediatrics RJ1-570 Carlos Grandi Livia dos S. Rodrigues Davi C. Aragon Fabio Carmona Viviane C. Cardoso Weight/length ratio references and newborn body composition estimation at birth from a Brazilian cohort
description	Objectives: The objective was to calculate weight/length (W/L) ratio values and percentiles by sex and gestational age (GA) to estimate fat mass (FM), fat-free mass (FFM) and body fat percentage (BF%) as well as to compare these indices in preterm, small (SGA), and large (LGA) for GA, stunted and wasted infants from a Brazilian cohort of newborns, comparing with the INTERGROWTH-21st. Methods: Secondary, cross-sectional analysis of data obtained of 7427 live-born infants from the BRISA Cohort Study in the city of Ribeirão Preto, SP, Brazil in 2010. For body composition estimation, W/L ratio was used in multiple regression models. The 3rd, 50th, and 97th percentiles for W/L ratio and body composition measures (FM, FFM, and BF%) were calculated using fractional polynomial regression models. Results: Average W/L ratio was 6.50 kg/m (SD 0.87), while for FM, BF%, and FFM the corresponding values were 359.64 g (145.76), 10.90% (3.05) and 2798.84 g (414.84), respectively. SGA (< 3rd percentile), and wasted infants showed the lowest W/L ratios and measures of body composition. The 3rd, 50th, and 97th percentiles charts of W/L, FM, BF%, and FFM by GA and sex are presented. Conclusions: W/L ratio values of the RP-BRISA Cohort are higher than IG-21st. SGA (< 3rd) and wasted infants showed the lowest W/L ratio and measures of body composition. The body composition references presented here could be used to refine the nutritional assessment of Brazilian newborns and to facilitate comparisons across populations.
format	article
author	Carlos Grandi Livia dos S. Rodrigues Davi C. Aragon Fabio Carmona Viviane C. Cardoso
author_facet	Carlos Grandi Livia dos S. Rodrigues Davi C. Aragon Fabio Carmona Viviane C. Cardoso
author_sort	Carlos Grandi
title	Weight/length ratio references and newborn body composition estimation at birth from a Brazilian cohort
title_short	Weight/length ratio references and newborn body composition estimation at birth from a Brazilian cohort
title_full	Weight/length ratio references and newborn body composition estimation at birth from a Brazilian cohort
title_fullStr	Weight/length ratio references and newborn body composition estimation at birth from a Brazilian cohort
title_full_unstemmed	Weight/length ratio references and newborn body composition estimation at birth from a Brazilian cohort
title_sort	weight/length ratio references and newborn body composition estimation at birth from a brazilian cohort
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/c1786d1c1eca4c769134092021d28815
work_keys_str_mv	AT carlosgrandi weightlengthratioreferencesandnewbornbodycompositionestimationatbirthfromabraziliancohort AT liviadossrodrigues weightlengthratioreferencesandnewbornbodycompositionestimationatbirthfromabraziliancohort AT davicaragon weightlengthratioreferencesandnewbornbodycompositionestimationatbirthfromabraziliancohort AT fabiocarmona weightlengthratioreferencesandnewbornbodycompositionestimationatbirthfromabraziliancohort AT vivianeccardoso weightlengthratioreferencesandnewbornbodycompositionestimationatbirthfromabraziliancohort
_version_	1718443942220922880

Weight/length ratio references and newborn body composition estimation at birth from a Brazilian cohort

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