High energy expenditure is not protective against increased adiposity in children.

ABSTRACT:

Background

Low levels of energy expenditure (TEE) may contribute to excess weight during childhood, but limited longitudinal data exist.

Objectives

This is to test whether low TEE during the first 6 years of life could predict excess weight status at 8 years.

Methods

Total energy expenditure from doubly labelled water, weight, stature, waist circumference and fat mass and fat-free mass (FFM) in children at 0.25, 2, 4 and 6 years of age. This cohort includes individuals at high (n = 27) and low risk (n = 26) for childhood obesity, based upon whether pre-pregnant maternal obesity. A linear mixed effects model was fit to TEE. Individual variation was accounted for as a random effect. Residual TEE was calculated for age and individually averaged across time.

Results

Fat-free mass (kg) was highly correlated (R²  = 0.91) with TEE (kcal/day), and waist circumference and sex were also significant predictors of TEE. TEE residual tracked within individuals. TEE residuals did not correlate with either BMI or %fat at age 8 years.

Conclusion

Using the residual TEE approach to identify high and low TEE during the first 6 years of life did not explain excess weight at 8 years of life in this cohort of children at high and low risk of obesity based upon maternal obesity status.

SUBMITTER: Zinkel SR 

PROVIDER: S-EPMC4993690 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature