![11tegen11 on X: "I don't mean the obvious heart rate monitor we saw KJH wear. But something like this image shows, a GPS vest? http://t.co/DqWyBIq9CY" / X 11tegen11 on X: "I don't mean the obvious heart rate monitor we saw KJH wear. But something like this image shows, a GPS vest? http://t.co/DqWyBIq9CY" / X](https://pbs.twimg.com/media/CGwpF3RWQAAyeAy.jpg)
11tegen11 on X: "I don't mean the obvious heart rate monitor we saw KJH wear. But something like this image shows, a GPS vest? http://t.co/DqWyBIq9CY" / X
GPS and heart-rate monitors are helping save Maryland college and high school athletes from injuries
![Waterproof Heart Rate Monitor Tracker Hand Strap Bluetooth-Compatible ANT Fitness Smart Sensor For Garmin Bryton Gym Outdoor Waterproof Heart Rate Monitor Tracker Hand Strap Bluetooth-Compatible ANT Fitness Smart Sensor For Garmin Bryton Gym Outdoor](https://ae01.alicdn.com/kf/H88d4a4cbb1864e94a88e172aa75dfbabo/Waterproof-Heart-Rate-Monitor-Tracker-Hand-Strap-Bluetooth-Compatible-ANT-Fitness-Smart-Sensor-For-Garmin-Bryton.jpg)
Waterproof Heart Rate Monitor Tracker Hand Strap Bluetooth-Compatible ANT Fitness Smart Sensor For Garmin Bryton Gym Outdoor
![Amazon.com : Polar H9 Heart Rate Sensor – ANT + / Bluetooth - Waterproof HR Monitor with Soft Chest Strap for Gym, Cycling, Running, Outdoor Sports : Sports & Outdoors Amazon.com : Polar H9 Heart Rate Sensor – ANT + / Bluetooth - Waterproof HR Monitor with Soft Chest Strap for Gym, Cycling, Running, Outdoor Sports : Sports & Outdoors](https://m.media-amazon.com/images/S/aplus-media/vc/b9f84985-c28f-42cb-b2be-6724c546777a.__CR0,0,300,300_PT0_SX300_V1___.jpg)
Amazon.com : Polar H9 Heart Rate Sensor – ANT + / Bluetooth - Waterproof HR Monitor with Soft Chest Strap for Gym, Cycling, Running, Outdoor Sports : Sports & Outdoors
![Sensors | Free Full-Text | Comparison of Heart Rate Monitoring Accuracy between Chest Strap and Vest during Physical Training and Implications on Training Decisions Sensors | Free Full-Text | Comparison of Heart Rate Monitoring Accuracy between Chest Strap and Vest during Physical Training and Implications on Training Decisions](https://pub.mdpi-res.com/sensors/sensors-21-08411/article_deploy/html/images/sensors-21-08411-g001.png?1639732255)