Published on in Vol 8 (2024)
This is a member publication of University of Toronto
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/51399, first published
.
![Physical Activity, Heart Rate Variability, and Ventricular Arrhythmia During the COVID-19 Lockdown: Retrospective Cohort Study Physical Activity, Heart Rate Variability, and Ventricular Arrhythmia During the COVID-19 Lockdown: Retrospective Cohort Study](https://asset.jmir.pub/assets/d12bb45559a030c43fa4a85ba51e2d82.png 480w,https://asset.jmir.pub/assets/d12bb45559a030c43fa4a85ba51e2d82.png 960w,https://asset.jmir.pub/assets/d12bb45559a030c43fa4a85ba51e2d82.png 1920w,https://asset.jmir.pub/assets/d12bb45559a030c43fa4a85ba51e2d82.png 2500w)
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