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Initial Validation of the PATCH: an Open-Source Device Designed to Measure Energy Expenditure among Children Aged 3-8 Years

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This observational analysis measures energy expenditure using PATCH in children, indicating its potential as a reliable tool.

The PATCH device accurately estimates oxygen consumption in children aged 3 to 8 years using heart rate and acceleration.
Mean absolute error values were 1.54, 1.56, and 1.99 ml/kg/min for CSTS, GAMM, and RF respectively.
Cross-sectional time series, generalized additive mixed models, and random forest methods provided similar accuracy for oxygen consumption estimation.
Further validation in larger populations is needed to establish the PATCH's effectiveness in real-life settings.

Gosal et al. (2025) studied this question.

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