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The measurement of resting metabolic rate in preschool children

Diane M Jackson1, Lucienne Pace, John R Speakman

  • 1Division of Vascular Health, Rowett Research Institute, Greenburn Road, Bucksburn, Aberdeen AB21 9SB, Scotland. d.jackson@rowett.ac.uk

Obesity (Silver Spring, Md.)
|August 23, 2007
PubMed

Insights

Resting metabolic rate (RMR) can be reliably measured in preschool children. Excluding initial minutes and movement artifacts provides the most accurate RMR estimates for this age group.

Area of Science:

  • Pediatric physiology
  • Metabolic research
  • Child health

Background:

  • Accurate measurement of resting metabolic rate (RMR) is crucial for assessing energy expenditure in children.
  • Previous research has not established standardized protocols for RMR measurement in preschool-aged children.

Purpose of the Study:

  • To evaluate the repeatability of RMR measurements in preschool children.
  • To determine the optimal calculation protocol for RMR in this population.

Main Methods:

  • RMR was measured three times over two weeks in 11 preschool children after an overnight fast.
  • Repeated-measures ANOVA was used to assess measurement repeatability.
  • Various calculation methods were compared to identify the most accurate protocol.

Main Results:

  • RMR measurements demonstrated good repeatability (CV 6.8%) with no significant day-to-day differences.
  • Excluding the initial 10 minutes and periods of significant movement yielded the lowest RMR values.
  • This optimized method resulted in RMR measurements approximately 4% lower than those including movement and early data.

Conclusions:

  • Resting metabolic rate measurement is feasible and repeatable in preschool children.
  • Excluding the first 10 minutes and periods of large body movements is the recommended calculation protocol for RMR in this age group.
  • A single RMR measurement using this protocol is sufficient for a reliable estimate.
Abstract

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