![The validity of activity trackers is affected by walking speed: the criterion validity of Garmin Vivosmart® HR and StepWatch™ 3 for measuring steps at various walking speeds under controlled conditions [PeerJ] The validity of activity trackers is affected by walking speed: the criterion validity of Garmin Vivosmart® HR and StepWatch™ 3 for measuring steps at various walking speeds under controlled conditions [PeerJ]](https://dfzljdn9uc3pi.cloudfront.net/2020/9381/1/fig-1-full.png)
The validity of activity trackers is affected by walking speed: the criterion validity of Garmin Vivosmart® HR and StepWatch™ 3 for measuring steps at various walking speeds under controlled conditions [PeerJ]
![Garmin Vivo Fitness Tracker Step Counter, Heart Rate Monitor and Gps Enabled in the Fitness Trackers department at Lowes.com Garmin Vivo Fitness Tracker Step Counter, Heart Rate Monitor and Gps Enabled in the Fitness Trackers department at Lowes.com](http://mobileimages.lowes.com/productimages/ef26665b-c179-4b80-8293-a390811734c0/40979346.jpg?size=pdhism)
Garmin Vivo Fitness Tracker Step Counter, Heart Rate Monitor and Gps Enabled in the Fitness Trackers department at Lowes.com
![Garmin Vivo Fitness Tracker Step Counter, Heart Rate Monitor and Gps Enabled in the Fitness Trackers department at Lowes.com Garmin Vivo Fitness Tracker Step Counter, Heart Rate Monitor and Gps Enabled in the Fitness Trackers department at Lowes.com](http://mobileimages.lowes.com/productimages/0588bb97-caab-464c-8dbf-2e476b227543/40979348.jpg)