You can set upper and lower limit vibration alerts on the Frontier X to the heart rate zones just like other users since these thresholds can be customised to a single heartbeat. A good rule of thumb to follow if you know the difference between your resting heart rate before and after your beta-blocker would be to customise your heart rate…Read More

Hi George. Training Load is a measurement of the total amount of exertion experienced by your body. Since the Frontier X can be used for different types of activities, training load can give you an insight into how your total exertion varies from one activity to the next.

It is calculated using breathing rate, and the time spent in each…Read More

Hi Gerry,

Lab-based exercise stress tests are stopped when ECG changes show that your Cardiac Strain crosses 0.2 mV. We suggest you set your Cardiac Strain alert to 0.18 mV to get a double buzz when you’re getting close to a zone that may be unsafe for your heart.