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2. Cardiac monitoring - Wikipedia

   en.wikipedia.org/wiki/Cardiac_monitoring

   The new wearable heart rate monitors indirectly measure the heart rate with reflectance photoplethysmography. The monitor illuminates the skin tissue with light emitting diode (LED) and detects the intensity of light reflected with the photodetector. [11] Wearable optical heart rate monitors are less reliable than electrode-based heart rate ...

3. Are fitness trackers worth it? What to know about these ... - AOL

   www.aol.com/lifestyle/fitness-trackers-worth...

   Early fitness trackers, like simple clip-on pedometers or wearable wristbands, focused primarily on gauging daily step counts and heart rate. Newer devices, however, track everything from sleep ...

4. Heart rate monitor - Wikipedia

   en.wikipedia.org/wiki/Heart_rate_monitor

   A heart rate monitor (HRM) is a personal monitoring device that allows one to measure/display heart rate in real time or record the heart rate for later study. It is largely used to gather heart rate data while performing various types of physical exercise. Measuring electrical heart information is referred to as electrocardiography (ECG or EKG).

5. Pulse watch - Wikipedia

   en.wikipedia.org/wiki/Pulse_Watch

   Wearable technologies that monitor heart rate has interested users for a very long time. [14] In addition to the pulse watch which monitors heart rate from pulse detection at the wrist. There are also devices which use similar technologies to monitor heart rate from the ear, forearm and chest, using a chest strap. [2]

6. Fitness tracker - Wikipedia

   en.wikipedia.org/wiki/Fitness_tracker

   Wearable heart rate monitors for athletes were available in 1981. [4] Improvements in technology in the late 20th and early 21st century made it possible to automate the recording of fitness activities, as well as to integrate monitors into more easily worn equipment. The RS-Computer shoe was released in 1986.

7. Holter monitor - Wikipedia

   en.wikipedia.org/wiki/Holter_monitor

   Each Holter system has hardware (called monitor or recorder) for recording the signal, and software for review and analysis of the record. There may be a "patient button" on the front that the patient can press at specific instants such as feeling/being sick, going to bed, taking pills, marking an event of symptoms which is then documented in the symptoms diary, etc.; this records a mark that ...