Published on in Vol 10, No 4 (2022): April
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/35626, first published
.
![Accuracy and Precision of Energy Expenditure, Heart Rate, and Steps Measured by Combined-Sensing Fitbits Against Reference Measures: Systematic Review and Meta-analysis Accuracy and Precision of Energy Expenditure, Heart Rate, and Steps Measured by Combined-Sensing Fitbits Against Reference Measures: Systematic Review and Meta-analysis](https://asset.jmir.pub/assets/3b96360cb23749e5893bd82c98e390ab.png 480w,https://asset.jmir.pub/assets/3b96360cb23749e5893bd82c98e390ab.png 960w,https://asset.jmir.pub/assets/3b96360cb23749e5893bd82c98e390ab.png 1920w,https://asset.jmir.pub/assets/3b96360cb23749e5893bd82c98e390ab.png 2500w)
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