Physical activity and fat mass gain in Mexican school-age children: a cohort study

BMC Pediatrics

Research Article

Salvador Villalpando¹  Yaveth A Lara-Zamudio¹  Alejandra Jáuregui¹  Eduardo Rangel-Baltazar¹  Marcia M Castillo-García¹ 

[1] Division of Nutrition and Health, National Institute of Public Health of Mexico, Av Universidad 655 Col Sta Ma Ahuacatitlán, C.P. 62100, Cuernavaca, Morelos, Mexico;

关键词: Physical Activity;    Body Mass Index;    Baseline Body Mass Index;    Body Mass Index Gain;    Dynamic Regression Model;   

DOI  :  10.1186/1471-2431-12-109

 received in 2011-12-22, accepted in 2012-07-28,  发布年份 2012

来源: Springer

【 摘 要 】

BackgroundIn México, the prevalence of unhealthy weight increased from 24% at 6 y to 33% at 12 y of age, opening a window of opportunity to better understand the pathogenesis of obesity. The objective of this study was to explore the association between time spent on medium, vigorous physical activity (MVPA) and concurrent gains in BMI, fat mass (FM) and fat-free mass (FFM), alternately, in a cohort of Mexican children followed from kindergarten (baseline) to 2nd grade elementary school (endline).MethodsThe MVPA (5-d accelerometry), BMI, FM and FFM (air displacement plethysmography) were measured at baseline and endline. Associations between gains in BMI, FM and FFM and changes in MVPA were examined using lagged and dynamic regression models, controlling for energy intake and demographic variables.ResultsA total of 205 children were analyzed. Gender affected the effect of MVPA on FM gain. In girls, a high baseline MVPA predicted a lower FM gain (-0.96 kg, p=0.025) compared to low/medium MVPA. Increasing, decreasing or having a persistently high MVPA predicted a lower FM gain (range -1.6 to -1.03 kg, p<0.05) compared to persistently low MVPA. In boys, increases in MVPA were associated with higher gains in BMI (+0.76 kg/m2, p=0.04) and FFM (+1.1 kg, p=0.01) compared to persistently low MVPA.ConclusionThese results support a protective role of MVPA on FM gain in girls, suggesting that it may play a crucial role in the development of obesity. Further research on the gender effect of MVPA is warranted to better understand its role in the prevention and control of overweight and obesity.

【 授权许可】

Unknown   
© Jáuregui et al.; licensee BioMed Central Ltd. 2012. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.