Daily energy expenditure in free-living children: Comparison of heart-rate monitoring with the doubly labeled water (2H218O) method

M. B.E. Livingstone, W. A. Coward, A. M. Prentice, P. S.W. Davies, J. J. Strain, P. G. McKenna, C. A. Mahoney, J. A. White, C. M. Stewart, M. J.J. Kerr

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Abstract

Total energy expenditure (TEE) was measured simultaneously in 36 free- living children aged 7, 9, 12, and 15 y over 10-15 d by the doubly labeled water (DLW) method and for 2-3 separate days by heart-rate (HR) monitoring. The 95% confidence limits of agreement (mean difference ± 2SD) were -1.99 to +1.44 MJ/d. HR TEE discrepancies ranged from -16.7% to +18.8% with 23 values lying within ± 10% of DLW TEE estimates. Boys and girls spent 462 ± 108 and 318 ± 120 min/d, respectively, in total physical activity (P < 0.01). Time spent in moderate and vigorous physical activity (MVPA) was 68 ± 37 min/d by younger children (7-9 y) and 34 ± 24 min/d by older children (12-15 y) (P < 0.001). Younger boys engaged in MVPA (91 ± 33 min/d) and vigorous physical activity (VPA) (35 ± 15 min/d) significantly longer than younger girls (MVPA, 39 ± 16 min/d, P < 0.001; VPA, 10 ± 4 min/d, P < 0.01) as did older boys (MVPA, 52 ± 21 min/d; VPA, 30 ± 18 min/d) compared with older girls (MVPA, 15 ± 10 min/d; VPA, 8 ± 5 min/d). HR monitoring provides a close estimation of the TEE of population groups and objective assessment of associated patterns of physical activity.

Original languageEnglish
Pages (from-to)343-352
Number of pages10
JournalAmerican Journal of Clinical Nutrition
Volume56
Issue number2
DOIs
Publication statusPublished - Jan 1 1992

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Keywords

  • Energy expenditure
  • children
  • doubly labeled water
  • heart rate
  • physical activity

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics

Cite this

Livingstone, M. B. E., Coward, W. A., Prentice, A. M., Davies, P. S. W., Strain, J. J., McKenna, P. G., Mahoney, C. A., White, J. A., Stewart, C. M., & Kerr, M. J. J. (1992). Daily energy expenditure in free-living children: Comparison of heart-rate monitoring with the doubly labeled water (2H218O) method. American Journal of Clinical Nutrition, 56(2), 343-352. https://doi.org/10.1093/ajcn/56.2.343