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There are many '''tools that measure and record heart rate''', aka pulse, either continuously, during an exercise session or periodically throughout the day. There are lots<ref>https://iotool.io/extensions/sensors/heart-rate-bluetooth-low-energy-4-0-sensors-1</ref> and lots<ref>https://forum.quantifiedself.com/t/reliable-wearable-ecg/2653</ref><ref>https://vandrico.com/wearables/device-categories/components/heart-rate-monitor.html</ref> of such devices and so not all have been evaluated. Heart rate is most common vital in [[Biofeedback]].  

There are many '''tools that measure and record heart rate''', aka pulse, either continuously, during an exercise session or periodically throughout the day. There are lots<ref>https://iotool.io/extensions/sensors/heart-rate-bluetooth-low-energy-4-0-sensors-1</ref> and lots<ref>https://forum.quantifiedself.com/t/reliable-wearable-ecg/2653</ref><ref>https://vandrico.com/wearables/device-categories/components/heart-rate-monitor.html</ref> of such devices and so not all have been evaluated. Heart rate is most common vital in [[Biofeedback]].

== Bands and Watches ==

=== Bands and Watches ===

Most smartwatches and fitness trackers that are worn as wrist-bands provide heart rate data in one form or another. Virtually all of them do so through Pulse Oximetry and try to avoid measurement artifacts through the use of accelerometer data. Cheap devices might actually not be able to reliably read heart rate from the pulse oximetry and rather "make up" heart rate "readings" solely based on the amount of movement as measured by the accelerometer. Widely used wearable devices that include heart rate data are:  

Most smartwatches and fitness trackers that are worn as wrist-bands provide heart rate data in one form or another. Virtually all of them do so through Pulse Oximetry and try to avoid measurement artifacts through the use of accelerometer data. Cheap devices might actually not be able to reliably read heart rate from the pulse oximetry and rather "make up" heart rate "readings" solely based on the amount of movement as measured by the accelerometer. Widely used wearable devices that include heart rate data are:  

* The [[Polar]] Verity Sense sits on the upper arm.  

* The [[Polar]] Verity Sense sits on the upper arm.  

== Finger ==

=== Finger ===

There are devices that also use pulse oximetry but are worn on a finger, rather than on the wrist, in this sense they are similar to medical devices that use pulse oximetry.

There are devices that also use pulse oximetry but are worn on a finger, rather than on the wrist, in this sense they are similar to medical devices that use pulse oximetry.

* [[Welltory]] <ref>https://welltory.com/heart-rate-variability/</ref> Can detect HRV when finger is placed in front of phone camera.

* [[Welltory]] <ref>https://welltory.com/heart-rate-variability/</ref> Can detect HRV when finger is placed in front of phone camera.

== Chest Straps ==

=== Chest Straps ===

Chest straps are considered the gold standard for measuring heart rate during exercise<ref>Pasadyn SR, Soudan M, Gillinov M, Houghtaling P, Phelan D, Gillinov N, Bittel B, Desai MY. Accuracy of commercially available heart rate monitors in athletes: a prospective study. Cardiovasc Diagn Ther. 2019 Aug;9(4):379-385. doi: [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6732081/ 10.21037/cdt.2019.06.05]. PMID: 31555543; PMCID: PMC6732081.</ref> but do not work well for continuous monitoring in particular during sleep as they are typically not comfortable to wear in bed.  

Chest straps are considered the gold standard for measuring heart rate during exercise<ref>Pasadyn SR, Soudan M, Gillinov M, Houghtaling P, Phelan D, Gillinov N, Bittel B, Desai MY. Accuracy of commercially available heart rate monitors in athletes: a prospective study. Cardiovasc Diagn Ther. 2019 Aug;9(4):379-385. doi: [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6732081/ 10.21037/cdt.2019.06.05]. PMID: 31555543; PMCID: PMC6732081.</ref> but do not work well for continuous monitoring in particular during sleep as they are typically not comfortable to wear in bed.  

* [[Coospo]]

* [[Coospo]]

== Few Lead ECG Patch ==

=== Few Lead ECG Patch ===

These devices make us of [[Electrocardiogram|electrocardiograms]] and are based on electrical pulses. Some devices are designed to only record spot-measurements, while others are designed to collect longitudinal data. For these latter to work they have to be temporarily glued on to a patch of skin, typically on the chest.  

These devices make us of [[Electrocardiogram|electrocardiograms]] and are based on electrical pulses. Some devices are designed to only record spot-measurements, while others are designed to collect longitudinal data. For these latter to work they have to be temporarily glued on to a patch of skin, typically on the chest.  

*[[Hexoskin]] ($600), includes many other sensors.

*[[Hexoskin]] ($600), includes many other sensors.

== Medical Multi Lead Holster ==

=== Medical Multi Lead Holster ===

Similar to the few-lead ECG patches above but these are typically tested medical devices that are used for long-term ECGs where the device is worn for up to 1-2 weeks. They are expensive and very bulky and less accessible for individuals outside the healthcare system.

Similar to the few-lead ECG patches above but these are typically tested medical devices that are used for long-term ECGs where the device is worn for up to 1-2 weeks. They are expensive and very bulky and less accessible for individuals outside the healthcare system.

* [[Contec]] makes one for about $400, can sometimes be found on ebay or alibaba

* [[Contec]] makes one for about $400, can sometimes be found on ebay or alibaba

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