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Fat free mass explains the relationship between stunting and energy expenditure in urban Mexican Maya children

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journal contribution
posted on 23.01.2014 by Hannah J. Wilson, Federico Dickinson, Daniel J. Hoffman, Paula Griffiths, Barry Bogin, Maria Ines Varela Silva
Background: Childhood stunting has been associated with an increased risk of obesity in adulthood, but the causes are unclear. This study hypothesizes that stunting significantly reduces both resting and activity energy expenditure. Aim: To assess and describe energy expenditure of low socio-economic Maya children and to determine whether stunting is independently related to energy expenditure after controlling for lean mass. Subjects and methods: Thirty-three urban Maya children, 17 boys, aged 7–9 years, living in Merida, Mexico, were measured for height, weight and bioelectrical impedance analysis (BIA). Body composition was estimated from BIA. Energy expenditure was measured for one week using the Actiheart (combined heart rate and accelerometer). Results: Stunting (height-for-age below the 5th percentile of NHANES III based references) affected 35% of these physically active children. Using multiple linear regression analysis, greater lean body mass predicted higher resting and activity energy expenditure. Stature was not a significant predictor of resting energy expenditure. A lower height-for-age z-score, but not stunting as a categorical variable, significantly predicted lower activity energy expenditure. Conclusion: The hypothesis that stunting reduces total energy expenditure (resting + active) in children is not supported. Rather, children with shorter stature and less lean body mass have lower total energy expenditure. Complex interactions between body size, body composition, and metabolic activity appear to elevate the risk for later life obesity in these Maya children.

Funding

Wenner-Gren Foundation [#ICRG-93]

History

School

  • Sport, Exercise and Health Sciences

Citation

WILSON, H.J. ... et al., 2012. Fat free mass explains the relationship between stunting and energy expenditure in urban Mexican Maya children. Annals of Human Biology, 39 (5), pp. 432 - 439.

Publisher

© Informa Plc.

Version

AM (Accepted Manuscript)

Publication date

2012

Notes

This article was accepted for publication in the Annals of Human Biology [© Informa Plc.] and the definitive version is available at: http://dx.doi.org/10.3109/03014460.2012.714403

ISSN

0301-4460

eISSN

1464-5033

Language

en

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