Published on in Vol 7, No 10 (2019): October
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/14120, first published
.
![Heart Rate Measures From Wrist-Worn Activity Trackers in a Laboratory and Free-Living Setting: Validation Study Heart Rate Measures From Wrist-Worn Activity Trackers in a Laboratory and Free-Living Setting: Validation Study](https://asset.jmir.pub/assets/57601375ba16d1f06aead36e65f8e4fa.png 480w,https://asset.jmir.pub/assets/57601375ba16d1f06aead36e65f8e4fa.png 960w,https://asset.jmir.pub/assets/57601375ba16d1f06aead36e65f8e4fa.png 1920w,https://asset.jmir.pub/assets/57601375ba16d1f06aead36e65f8e4fa.png 2500w)
There are currently no tweets available for this article within the specified range.