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Fitness trackers are a great way to make people aware of their activity level throughout the day, oftentimes, our perceived activity is much more than actual time spent we spend moving, especially people whose jobs involve sitting at a desk for hours at a time.
Found on CNN 7 years ago
It is good for people to see their heart rate, both at rest and with exercise. Low resting heart rates, in the 60 to 70s bpm range, are considered generally healthy. High resting heart rates, especially when close to 100 bpm or higher, can be a sign of high stress levels or other medical conditions, how quickly the heart rate goes back to normal after exercise also holds a lot of information. Quicker indicates better cardiopulmonary fitness level.
Found on CNN 7 years ago
Electrocardiography, or ECG, involves placing electrodes on the skin surface to measure electrical impulses generated by the heart muscle itself. The LED technology used in fitness trackers is an indirect measurement looking at the changes in light reflection through the skin during each heartbeat.
Found on CNN 7 years ago
LED technology can be affected by variables such as how loosely or tightly the tracker is worn, the user's skin tone or any other interference between the sensor and the skin. It can also become inaccurate with motion, which is why it doesn't fare as well as ECG with exercise.
Found on CNN 7 years ago
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