Some watches, like Apple’s iWatch has both an ECG as well as heart rate monitors. That said, there are some ECG monitors designed for home use, although these do tend to be more expensive. On the other hand, basic heart rate monitors are designed more for home and personal use. ECG machines are big, expensive, and usually only found in hospitals and medical clinics. One difference between these two heart monitoring devices is where they are used. Seeing as both of these machines serve virtually the same purpose, yet function in different ways, let’s do a side-by-side comparison to see how they work. It’s almost like sonar for your blood flow. Light is emitted from the heart rate monitor and then reflected back off of the tissue to come to a reading. In other words, it can sense ambient light and its movement based on the movement of your blood. Photoplethysmography sensors use light-based technology to measure the rate of blood flow. Heart rate monitors, particularly the wrist based models, use something called PPG sensors. What is a Heart Rate Monitor?Ī heart rate monitor is also a device that keeps track of your heart rate, although the way in which it measures your heart rate is different than how an ECG machine does. An ECG measures each of these electrical impulses to see what the heart rate and function are like. It does this by using special sensors which monitor the electrical activity of your heart.Įach time your heart beats, an electrical wave travels through the heart and causes the heart muscle to contract. This is a test which monitors how well your heart is functioning. PPG Heart Rate Monitors: A ComparisonĮCG stands for electrocardiogram, and is sometimes also referred to as an EKG.
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