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Sex differences in the associations of physical activity and macronutrient intake with child body composition: A cross-sectional study of 3- to 7-year-olds in Samoa

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posted on 24.11.2020, 09:23 by AA Thompson, RL Duckham, MM Desai, CC Choy, Lauren SherarLauren Sherar, T Naseri, C Soti-Ulberg, MS Reupena, AI Wetzel, NL Hawley
© 2020 World Obesity Federation Background: Overweight/obesity is prevalent among children in the Pacific Islands, but its aetiology is poorly understood. Few studies have considered body composition in addition to body mass index–based measures. Objectives: To describe body composition among Samoan children and determine sex-specific associations among dietary intake, physical activity, and body composition. Methods: Body composition (percent body fat [¿], lean mass, and trunk-to-peripheral fat ratio) of n = 83 Samoan children (3-7 y) was assessed using dual-energy X-ray absorptiometry. Children completed 7 days of objective physical activity monitoring. Mothers reported child nutritional intake using a 115-item food frequency questionnaire. Stepwise generalized linear regression was used to determine independent associations of nutritional intake and physical activity with body composition. Results: Samoan children had higher average ¿ than reported among other ethnic groups but lower trunk-to-peripheral fat ratios. In sex-stratified analyses, quartile of carbohydrate intake was negatively associated with ¿ (β = −2.02 SE = 0.58; P <.001) in girls only. Among boys, physical activity (quartile of accelerometer counts per minute) was negatively associated with ¿ (β = −1.66 SE = 0.55; P <.01). Conclusions: Sex differences in the associations among nutritional intake, physical activity, and body composition may be important to consider as interventions are developed to address overweight/obesity among Samoan children.

History

School

  • Sport, Exercise and Health Sciences

Published in

Pediatric Obesity

Volume

15

Issue

4

Citation

Thompson, AA. ... et al, (2020). Sex differences in the associations of physical activity and macronutrient intake with child body composition: A cross-sectional study of 3- to 7-year-olds in Samoa. Pediatric Obesity, 15(4): e12603.

Publisher

Wiley

Version

AM (Accepted Manuscript)

Rights holder

© World Obesity Federation

Publisher statement

This is the peer reviewed version of the following article: Thompson, AA. ... et al, (2020). Sex differences in the associations of physical activity and macronutrient intake with child body composition: A cross-sectional study of 3- to 7-year-olds in Samoa. Pediatric Obesity, 15(4): e12603, which has been published in final form at https://doi.org/10.1111/ijpo.12603. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

Acceptance date

21/10/2019

Publication date

2020-01-10

Copyright date

2020

ISSN

2047-6310

eISSN

2047-6310

Language

en

Depositor

Dr Lauren Sherar Deposit date: 20 November 2020

Article number

e12603