Shulou(Shulou.com)11/24 Report--

CTOnews.com, November 7 (Xinhua)-- for many users, the Apple Watch is a wristwatch, but new research shows that wearing the Apple Watch on the arm does not affect the accuracy of its heart rate monitor.

Heart rate monitors can still provide accurate data when users wear Apple Watch on their arms, according to a new observational study published in PubMed.

Source: TwelveSouth Action SleeveApple Watch uses an optical heart rate sensor to measure your vital signs. It relies on a technique called photoelectric volume pulse wave (PPG), which uses LED 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 that flows through specific parts of your body, such as your wrist, increases. Between heartbeats, there is less blood volume, and Apple Watch can calculate your heart rate by flashing the green light hundreds of times per second.

In the study, a surgeon wore two identical Apple Watch models, one on the wrist and the other on the arm.

Statistical analysis shows that there is no systematic error between wrist wearable Apple Watch and arm wearable Apple Watch in heart rate monitoring. In other words, the two heart rates are close enough that any measurement is considered accurate.

The study wrote:

The results of this study suggest that the upper arm is a viable alternative to monitoring heart rate with Apple Watch during surgery.

The measurement results obtained from upper arm wearable and wrist wearable equipment have good consistency and reliability, no systematic error and high accuracy.

CTOnews.com is here to attach the address of the report paper, interested users can read in depth: Yamada K, Enokida Y, Kato R, Imaizumi J, Takada T, Ojima H. The Feasibility and Reliability of Upper Arm-Worn Apple Watch Heart Rate Monitoring for Surgeons During Surgery: Observational Study. JMIR Hum Factors. 2023 Nov 1x 10There are 50891. Doi: 10.2196/50891. PMID: 37910162.

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