Published on in Vol 21, No 3 (2019): March
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/12053, first published
.
![Can Smartphone Apps Increase Physical Activity? Systematic Review and Meta-Analysis Can Smartphone Apps Increase Physical Activity? Systematic Review and Meta-Analysis](https://asset.jmir.pub/assets/d0a148756ab14978be8fc4721d1a1d5a.png 480w,https://asset.jmir.pub/assets/d0a148756ab14978be8fc4721d1a1d5a.png 960w,https://asset.jmir.pub/assets/d0a148756ab14978be8fc4721d1a1d5a.png 1920w,https://asset.jmir.pub/assets/d0a148756ab14978be8fc4721d1a1d5a.png 2500w)
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