Revisiting trajectories of BMI in youth: An in‐depth analysis of differences between BMI and other adiposity measures

Abstract Objective Body mass index (BMI) is used to identify trajectories of adiposity in youth, but it does not distinguish fat‐ from fat‐free‐mass. There are other inexpensive measures of adiposity which might better capture fat‐mass in youth The objective of this study is to examine differences b...

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Autores principales:	Marie‐Pierre Sylvestre, Marilyn N. Ahun, Jennifer O'Loughlin
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	adiposity adolescence BMI group‐based trajectories young adulthood Internal medicine RC31-1245
Acceso en línea:	https://doaj.org/article/b9bc0865e82344ec97d7f3cb32f590aa
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spelling	oai:doaj.org-article:b9bc0865e82344ec97d7f3cb32f590aa2021-12-01T08:57:17ZRevisiting trajectories of BMI in youth: An in‐depth analysis of differences between BMI and other adiposity measures2055-223810.1002/osp4.538https://doaj.org/article/b9bc0865e82344ec97d7f3cb32f590aa2021-12-01T00:00:00Zhttps://doi.org/10.1002/osp4.538https://doaj.org/toc/2055-2238Abstract Objective Body mass index (BMI) is used to identify trajectories of adiposity in youth, but it does not distinguish fat‐ from fat‐free‐mass. There are other inexpensive measures of adiposity which might better capture fat‐mass in youth The objective of this study is to examine differences between sex‐specific trajectories of BMI and other adiposity indicators (subscapular and triceps skinfold thickness, waist circumference, waist‐to‐height ratio) which may better capture fat‐mass in youth. Methods Data come from four cycles of a longitudinal cohort of 1293 students in Montréal, Canada at ages 12, 15, 17 and 24. Group‐based trajectory models identified sex‐specific adiposity trajectories among participants with data in ≥3 cycles (n = 417 males; n = 445 females). Results There were six trajectory groups in males and females for all five indicators, except for waist circumference (seven) in both sexes and triceps skinfold thickness (four) and waist‐to‐height ratio (five) in females. Most trajectories indicated linear increases; only the skinfold thickness indicators identified a decreasing trajectory. While all indicators identified a trajectory with high levels of adiposity, they differed in the number and relative size of trajectories pertaining to individuals in lower half of the adiposity distribution. Conclusion BMI is a satisfactory indicator of adiposity in youth if the aim of the trajectory analysis is to identify youth with excess adiposity, a known risk factor for cardiometabolic outcomes in adulthood.Marie‐Pierre SylvestreMarilyn N. AhunJennifer O'LoughlinWileyarticleadiposityadolescenceBMIgroup‐based trajectoriesyoung adulthoodInternal medicineRC31-1245ENObesity Science & Practice, Vol 7, Iss 6, Pp 711-718 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	adiposity adolescence BMI group‐based trajectories young adulthood Internal medicine RC31-1245
spellingShingle	adiposity adolescence BMI group‐based trajectories young adulthood Internal medicine RC31-1245 Marie‐Pierre Sylvestre Marilyn N. Ahun Jennifer O'Loughlin Revisiting trajectories of BMI in youth: An in‐depth analysis of differences between BMI and other adiposity measures
description	Abstract Objective Body mass index (BMI) is used to identify trajectories of adiposity in youth, but it does not distinguish fat‐ from fat‐free‐mass. There are other inexpensive measures of adiposity which might better capture fat‐mass in youth The objective of this study is to examine differences between sex‐specific trajectories of BMI and other adiposity indicators (subscapular and triceps skinfold thickness, waist circumference, waist‐to‐height ratio) which may better capture fat‐mass in youth. Methods Data come from four cycles of a longitudinal cohort of 1293 students in Montréal, Canada at ages 12, 15, 17 and 24. Group‐based trajectory models identified sex‐specific adiposity trajectories among participants with data in ≥3 cycles (n = 417 males; n = 445 females). Results There were six trajectory groups in males and females for all five indicators, except for waist circumference (seven) in both sexes and triceps skinfold thickness (four) and waist‐to‐height ratio (five) in females. Most trajectories indicated linear increases; only the skinfold thickness indicators identified a decreasing trajectory. While all indicators identified a trajectory with high levels of adiposity, they differed in the number and relative size of trajectories pertaining to individuals in lower half of the adiposity distribution. Conclusion BMI is a satisfactory indicator of adiposity in youth if the aim of the trajectory analysis is to identify youth with excess adiposity, a known risk factor for cardiometabolic outcomes in adulthood.
format	article
author	Marie‐Pierre Sylvestre Marilyn N. Ahun Jennifer O'Loughlin
author_facet	Marie‐Pierre Sylvestre Marilyn N. Ahun Jennifer O'Loughlin
author_sort	Marie‐Pierre Sylvestre
title	Revisiting trajectories of BMI in youth: An in‐depth analysis of differences between BMI and other adiposity measures
title_short	Revisiting trajectories of BMI in youth: An in‐depth analysis of differences between BMI and other adiposity measures
title_full	Revisiting trajectories of BMI in youth: An in‐depth analysis of differences between BMI and other adiposity measures
title_fullStr	Revisiting trajectories of BMI in youth: An in‐depth analysis of differences between BMI and other adiposity measures
title_full_unstemmed	Revisiting trajectories of BMI in youth: An in‐depth analysis of differences between BMI and other adiposity measures
title_sort	revisiting trajectories of bmi in youth: an in‐depth analysis of differences between bmi and other adiposity measures
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/b9bc0865e82344ec97d7f3cb32f590aa
work_keys_str_mv	AT mariepierresylvestre revisitingtrajectoriesofbmiinyouthanindepthanalysisofdifferencesbetweenbmiandotheradipositymeasures AT marilynnahun revisitingtrajectoriesofbmiinyouthanindepthanalysisofdifferencesbetweenbmiandotheradipositymeasures AT jenniferoloughlin revisitingtrajectoriesofbmiinyouthanindepthanalysisofdifferencesbetweenbmiandotheradipositymeasures
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Revisiting trajectories of BMI in youth: An in‐depth analysis of differences between BMI and other adiposity measures

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