Validation of the SenseWear Mini activity monitor in 5-12 year-old children

Christiana M.T. van Loo, Anthony D. Okely, Marijka J. Batterham, Trina Hinkley, Ulf Ekelund, Soren Brage, John J. Reilly, Gregory E. Peoples, Rachel Jones, Xanne Janssen, Dylan P. Cliff

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Abstract

Objectives: This study aimed to validate SenseWear Mini software algorithm versions 2.2 (SW2.2) and 5.2 (SW5.2) for estimating energy expenditure (EE) in children. Design: Laboratory-based validation study. Methods: 57 children aged 5-12 y completed a protocol involving 15 semi-structured sedentary (SED), light-intensity (LPA), and moderate- to vigorous-intensity (MVPA) physical activities. EE was estimated using portable indirect calorimetry (IC). The accuracy of EE estimates (kcal·min−1) from SW2.2 and SW5.2 were examined at the group level and individual level using the mean absolute percentage error (MAPE), Bland-Altman plots and equivalence testing. Results: MAPE values were lower for SW5.2 (30.1% ± 10.7%) than for SW2.2 (44.0% ± 6.2%). Although mean differences for SW5.2 were smaller than for SW2.2 during SED (-0.23 ± 0.22 vs. - 0.61 ± 0.20 kcal·min−1), LPA (-0.69 ± 0.76 vs. -1.07 ± 0.46 kcal·min−1) and MVPA (-2.22 ± 1.15 vs. - 2.57 ± 1.15 kcal·min−1), limits of agreement did not decrease for the updated algorithms. For all activities, SW2.2 and SW5.2 were not equivalent to IC (p>0.05). Errors increased with increasing intensity. Conclusion: The current SenseWear Mini algorithms SW5.2 underestimated EE. The overall improved accuracy for SW5.2 was not accompanied with improved accuracy at the individual level 36 and EE estimates were not equivalent to IC.
Original languageEnglish
JournalJournal of Science and Medicine in Sport
DOIs
Publication statusAccepted/In press - 30 Apr 2016

Keywords

  • energy expenditure
  • physical activity
  • accelerometry
  • calorimetry
  • validation study

Cite this

van Loo, C. M. T., Okely, A. D., Batterham, M. J., Hinkley, T., Ekelund, U., Brage, S., Reilly, J. J., Peoples, G. E., Jones, R., Janssen, X., & Cliff, D. P. (Accepted/In press). Validation of the SenseWear Mini activity monitor in 5-12 year-old children. Journal of Science and Medicine in Sport. https://doi.org/10.1016/j.jsams.2016.04.010