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Validating a Consumer Smartwatch for Nocturnal Respiratory Rate Measurements in Sleep Monitoring
- Title
- Validating a Consumer Smartwatch for Nocturnal Respiratory Rate Measurements in Sleep Monitoring
- Authors
- Jung H.; Kim D.; Choi J.; Joo E.Y.
- Ewha Authors
- 김동엽
- SCOPUS Author ID
- 김동엽
- Issue Date
- 2023
- Journal Title
- Sensors
- ISSN
- 1424-8220
- Citation
- Sensors vol. 23, no. 18
- Keywords
- accelerometer; obstructive sleep apnea; photoplethysmography; respiratory rate; sleep monitoring; wearable device
- Publisher
- Multidisciplinary Digital Publishing Institute (MDPI)
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- Wrist-based respiratory rate (RR) measurement during sleep faces accuracy limitations. This study aimed to assess the accuracy of the RR estimation function during sleep based on the severity of obstructive sleep apnea (OSA) using the Samsung Galaxy Watch (GW) series. These watches are equipped with accelerometers and photoplethysmography sensors for RR estimation. A total of 195 participants visiting our sleep clinic underwent overnight polysomnography while wearing the GW, and the RR estimated by the GW was compared with the reference RR obtained from the nasal thermocouple. For all participants, the root mean squared error (RMSE) of the average overnight RR and continuous RR measurements were 1.13 bpm and 1.62 bpm, respectively, showing a small bias of 0.39 bpm and 0.37 bpm, respectively. The Bland–Altman plots indicated good agreement in the RR measurements for the normal, mild, and moderate OSA groups. In participants with normal-to-moderate OSA, both average overnight RR and continuous RR measurements achieved accuracy rates exceeding 90%. However, for patients with severe OSA, these accuracy rates decreased to 79.45% and 75.8%, respectively. The study demonstrates the GW’s ability to accurately estimate RR during sleep, even though accuracy may be compromised in patients with severe OSA. © 2023 by the authors.
- DOI
- 10.3390/s23187976
- Appears in Collections:
- 의료원 > 의료원 > Journal papers
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