pulssimittoja

Pulssimittoja are devices used to measure heart rate. They are commonly worn as wristbands or chest straps. The technology behind most pulssimittoja relies on photoplethysmography (PPG), where sensors detect changes in blood volume under the skin caused by the pulsing of blood. As the heart pumps blood, the blood vessels in the extremities dilate and constrict, leading to slight changes in light absorption or reflection that the sensors can pick up. Another common method, particularly in chest straps, is electrocardiography (ECG), which measures the electrical activity of the heart.

These devices vary in accuracy and features. Wrist-based pulssimittoja can be affected by factors like skin temperature, movement, and skin tone. Chest straps are generally considered more accurate for measuring heart rate during intense physical activity due to their direct contact with the chest and often superior sensor technology. Modern pulssimittoja often connect wirelessly to smartphones or dedicated sports watches, allowing users to track their heart rate over time, monitor heart rate zones during exercise, and analyze recovery. They are widely used by athletes for training optimization and by individuals interested in general health monitoring.