A new study published on Scientific Report, an online multidisciplinary, open-access journal from the publishers of Nature, shows that the Apple Watch Series 6 “is a reliable way to obtain heart rate and oxygen saturation (SpO2) in patients with lung diseases under controlled conditions.”

The study from the University of São Paulo, one of Brazil’s more prestigious education institutions and was conducted with 100 patients with chronic obstructive pulmonary disease and interstitial lung disease from an outpatient pneumology clinic. It collected SpO2 and heart rate data with Apple Watch Series 6 and compared them to two commercial pulse oximeters.

The study observed “strong positive correlations between the Apple Watch device and commercial oximeters. It notes that “there was no statistical difference in the evaluation of skin color, wrist circumference, presence of wrist hair, and enamel nail for SpO2 and hear rate measurements in Apple Watch or commercial oximeter devices.”

apple-watch-series-6-oximeter-study-9to5macwas first introduced in 2020. Different from the Apple Watch Series 4, which needed government approval to take ECGs, Apple says its oxygen blood measurement feature isn’t medically approved and it’s only for the user’s well-being.

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Even though, studies like this one conducted by USP show that the Apple Watch does a good job helping people to have control over their well-being.

The Apple Watch Series 7, which is yet to be launched by Apple, does have oxygen blood measurement capabilities, although it isn’t clear whether there’s an upgrade from last year’s model.

The “Comparison of SpO2 and heart rate values on Apple Watch and conventional commercial oximeters devices in patients with lung disease” study was conducted by Leonardo Zumerkorn Pipek, Rafaela Farias Vidigal Nascimento, Milena Marques Pagliarelli Acencio, and Lisete Ribeiro Teixeira. You can read the full report here.

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Study: Apple Watch Series 6 oximeter is ‘reliable’ for patients with lung disease
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