Published on in Vol 6, No 3 (2022): March
![Engagement With Web-Based Fitness Videos on YouTube and Instagram During the COVID-19 Pandemic: Longitudinal Study Engagement With Web-Based Fitness Videos on YouTube and Instagram During the COVID-19 Pandemic: Longitudinal Study](https://asset.jmir.pub/assets/efe8f2b2c66a7350602e17f807877a7f.png 480w,https://asset.jmir.pub/assets/efe8f2b2c66a7350602e17f807877a7f.png 960w,https://asset.jmir.pub/assets/efe8f2b2c66a7350602e17f807877a7f.png 1920w,https://asset.jmir.pub/assets/efe8f2b2c66a7350602e17f807877a7f.png 2500w)
1 Exercise and Health Psychology Lab, Western University, London, ON, Canada
2 Department of Human Development and Family Studies, College of Health and Human Development, Pennsylvania State University, University Park, PA, United States
3 Behavioural Medicine Laboratory, School of Exercise Science, Physical and Health Education, University of Victoria, Victoria, BC, Canada