Research shows that wearing an Apple Watch on the arm can still accurately monitor the wearer's heart rate
IT Home reported on November 7th that for many users, the AppleWatch is a wristwatch, but new research shows that,Wearing the AppleWatch on the arm will not affect the accuracy of its heart rate monitor.According to a recent observational study published in PubMed,Users wear the AppleWatch on their arms, and the heart rate monitor can still provide accurate data
IT Home reported on November 7th that for many users, the AppleWatch is a wristwatch, but new research shows that,Wearing the AppleWatch on the arm will not affect the accuracy of its heart rate monitor.
According to a recent observational study published in PubMed,Users wear the AppleWatch on their arms, and the heart rate monitor can still provide accurate data.
Image source: TwelveSouthActionSleeve
AppleWatch uses an optical heart rate sensor to measure your vital signs. It relies on a technology called Photocapacitive Pulse Generation (PPG), which uses LEDs to irradiate human skin and then uses photodiodes to measure changes in reflected light intensity caused by blood flow.
When your heart beats, the amount of blood flowing through specific body parts (such as the wrist) increases. Between heartbeats, there is less blood volume. By flashing green lights hundreds of times per second, the AppleWatch can calculate your heart rate.
In this study, a surgeon wore two identical models of AppleWatch, one located on the wrist and the other on the arm.
Statistical analysis and investigation have found that there is no systematic error between the wrist wearing AppleWatch and the arm wearing AppleWatch in heart rate monitoring. In other words, the two heart rates are close enough that any measurement is considered accurate.
The study states:
The results of this study indicate that the upper arm is a feasible alternative site for monitoring heart rate using AppleWatch during surgery. The consistency and reliability of the measurement results obtained from the upper arm wearing and wrist wearing devices are good, with no systematic errors and high accuracy.
IT Home has attached the address of the report and paper here. Interested users can read it in depth: YamadaK, EnokidayY, KatoR, ImaizumiJ, TakadaT, OjimaH. The Feasibility and Reliability of UpperArm WornAppleWatchHeartRateMonitoring for Surveys DuringSurvey: ObservationalStudy.JMIRHumFactors.2023Nov1; 10: E50891. doi: 10.2196/50891. PMID: 37910162
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