The options that the Apple Watch offers us when it comes to quantifying our daily army or our training sessions is one of the main reasons for users to buy it, especially the Apple Watch Series 2, which has added a GPS sensor in addition to being resistant to water officially and not informally as the previous model. In case anyone had doubts, a study has been published in the JAMA Cardiology publication in which Apple's smartwatch confirmed to be the most accurate device on the market.
According to TIME magazine, this study it was carried out with 50 adults who were connected to an electrocardiogram, the most accurate way to measure heart activity today. Once different measurements had been taken, the subjects who participated in the study made use of the pulsator Fitbit HR, Apple Watch, Mine Apha and Basis Peak like a measured one that is placed on the chest.
Heartbeats were measured performing three tests of different activity levels such as resting, walking and running on a beltto. The chest monitor was the device that showed 99% accuracy compared to EKG results, something to be expected. In second position we find the Apple Watch with an accuracy of 90% while the rest of the device did not exceed 80%.
A curious data that is extracted from this test is that As the intensity of the army increases, the devices begin to stop marking correctly. To measure the pulsations, the devices take into account the blood flow, since at a higher speed, the light emitted by the device to find out the heart rate rebounds more quickly and the device may lose part of the contact with the skin, which that influences the results obtained, hence, when exercising, manufacturers always recommend wearing the smartwatch well attached to the wrist to obtain the most accurate measurements possible.