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. 2020 Oct 12;22(10):e23954. doi: 10.2196/23954

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©Mickael Ringeval, Gerit Wagner, James Denford, Guy Paré, Spyros Kitsiou. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 12.10.2020.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on http://www.jmir.org/, as well as this copyright and license information must be included.

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Forest plot of mean difference in moderate-to-vigorous physical activity (MVPA; min/day) in studies comparing an intervention that included a Fitbit device with a control group that did not utilize such a device.