Title :

Age-Related Changes in Segmental Body Composition by Ethnicity and History of Weight Change across the Adult Lifespan

Author(s) :

Tian, S. [Auteur]
Dalian Maritime University
Morio, Béatrice [Auteur]
Cardiovasculaire, métabolisme, diabétologie et nutrition [CarMeN]
Denis, J. B. [Auteur]
Unité de recherche Mathématiques et Informatique Appliquées [MIA]
Mioche, L. [Auteur]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]

Journal title :

International Journal of Environmental Research and Public Health

Pages :

17 p.

Publisher :

MDPI

Publication date :

2016-08

ISSN :

1661-7827

English keyword(s) :

multivariate modelling
aging
body composition

HAL domain(s) :

Sciences du Vivant [q-bio]

English abstract : [en]

This study assessed age-related changes in body composition (specifically in trunk fat and appendicular lean masses), with consideration of body mass index (BMI) at age 20 years (BMI reference age, "BMIref"), ethnicity and ...
Show more >This study assessed age-related changes in body composition (specifically in trunk fat and appendicular lean masses), with consideration of body mass index (BMI) at age 20 years (BMI reference age, "BMIref"), ethnicity and lifetime weight change history. A cross-sectional dual-energy X-ray absorptiometry-based dataset was extracted from the U.S. National Health and Nutrition Examination Survey (NHANES) 1999-2004. Only European-American and African-American subjects were used (2705 men, 2527 women). For each gender and ethnicity, 6 analytic cases were considered, based on three BMIref categories (normal, overweight and obese, being 22, 27 and 30 kg/m(2), respectively) and two weight contexts (stable weight or weight gain across the lifespan). A nonparametric model was developed to investigate age-related changes in body composition. Then, parametric modelling was developed for assessing BMIref- and ethnicity-specific effects during aging. In the stable weight, both genders' and ethnicities' trunk fat (TF) increased gradually; body fat (BF) remained stable until 40 years and increased thereafter; trunk lean (TL) remained stable, but appendicular lean (APL) and body lean (BL) declined from 20 years. In the weight gain context, TF and BF increased at a constant rate, while APL, TL and BL increased until 40-50 years, and then declined slightly. Compared with European-American subjects of both genders, African-American subjects had lower TF and BF masses. Ethnic differences in body composition were quantified and found to remain constant across the lifespan.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Comment :

We thank the Human Nutrition Department and Applied Mathematics and Informatics unit of the French National Institute for Agricultural Research for a fellowship that permitted us to conduct the study

Collections :

• Centre d'Infection et d'Immunité de Lille (CIIL) - U1019 - UMR 9017

Source :

Harvested from HAL