Artículo de revista
Energy expenditure and intake comparisons in Chilean children 4-5 years attending day-care centres
Date
2015Registration in:
Nutrición Hospitalaria Volumen: 32 Número: 3 (2015)
0212-1611
DOI: 10.3305/nh.2015.32.3.9263
Author
Salazar Rodríguez, Gabriela
Vásquez Vergara, Fabián
Rodríguez, María P.
Andrade Santibáñez, Ana
Anziani, María A.
Vio del Río, Fernando Tomás
Coward, Williams
Institutions
Abstract
Introduction: the doubly labelled water (DLW) method
has an accuracy of 1% and within-subject precision of
5-8%, depending on subject’s age and environments issues.
Energy intake assessment is prone to errors (>15-
20%) depending in the method utilized.
Objective: to quantify DLW methodology errors in
four to five year olds that could affect the comparison
with energy intake.
Methods: energy expenditure (TEE, by DLW), was
assessed during 14 days in 18 preschool children, who
attended eight hours daily to day-care centres. Energy
intake was determined by a combined method: food
weighing during weekdays and recall after leaving the
Centre (17h to sleep time) plus 24 h recall, during the
weekend. Several assumptions affecting DLW total error
were assessed to determine their influence in the comparison
to energy intake (i.e. background variability, space
ratio, proportion of water subject to fractionation, food
quotient value).
Results: the individual mean energy expenditure was
1 373 ± 177 kcal and the energy intake (1 409 ± 161 kcal).
The overall difference between intake and expenditure
was 42.9 kcal/day (limits of agreement + 259.1 to -112.3
kcal/day). TEE measurement error only explained a minor
quantity (2.4%), between both measurements, and the
observed mean isotope dilution space was 1.030 ± 0.010
confirming the value utilized in adults studies.
Conclusions: energy expenditure data is similar to
other studies in preschool children. The small difference
found between energy intake and expenditure may be
attributed to the applied energy intake methodology, the
homogeneous diet at care centres during the week-days
and the lower DLW methodology error.