Heart rate trackers are used to measure some of the activities you undertake such as the distance you walk, the calories you burn and the number of steps that you climb. These trackers, mostly worn at the wrist, can also be used to monitor the heart rate of the user.
To measure your pulse, activity and heart rate tracker uses your pulse. It occurs when they shine a light right into your wrist’s blood vessel, and then notices the changes in blood volumes that happen every time your heart beats and pushes your blood right inside your body. The sensors that this device has will detect the amount of light your blood vessel will be able to reflect back. If the light reflected back is less, then that would translate to a higher blood volume.
Heart rate trackers made specifically for athletes have been in existence for a very extended period of time of time. Activity and heart rate tracker designed specifically for the general public has been designed.
These devices are very accurate when used to monitor the heart rate. However, when a user indulges in an intense activity, the heart rate tracker can be a little less precise.
Hospitals have been using pulse oximeters to measure the amount of oxygen in a similar way a heart rate tracker would do it. This verifies that the technology has been around for quite some time.
Using light to measure someone’s pulse is recommended when that person is at rest. It will, however, be challenging when the subject moves about. The movement of the individual’s capillaries, muscles, and tendons can substantially interfere with the measurements relayed by the activity and heart rate tracker. This is the reason why heart rate trackers used for exercising purposes have used chest straps that measure the electrical activity of the heart. With the advancement in technology, most companies have designed algorithms that cancel much of the noise created by the movement of people. They allow the sensors to measure the rate of the heart still even if the individual is moving.
The pulse is supposed to checked on the underside of the wrist and counting the beats for close to fifteen seconds and then multiply the number by four. The accuracy of activity and heart rate monitor will vary from one person to another. At times, a device may fail to fit well if someone has rather thin hands. But it is a useful device that can be used to help people stay physically fit.