Year: 2021
Type: dissertation
Abstract: Objective: To test the agreement between two measuring methods, the smartwatch Withings ScanWatch (WSW), and the gold standard polysomnography (PSG), for sleep parameters (total sleep time [TST], wake after sleep onset [WASO], light sleep, deep sleep, average heart rate) \nMethods: A total of 24 adult participants (14 men and 10 women), age 22 to 69 years (M = 40.1 ± 13.9 years), were recruited in the study. All participants slept with the PSG and WSW simultaneously for one night at home. Data collected from both devices were analysed and compared using descriptive statistics, paired t-tests, Pearson correlation and Bland-Altman plots. \nResults: A significant difference (bias) was found between measurements, for TST, WASO and deep sleep, overestimated TST by 57 minutes on average, underestimated WASO by 11 minutes and overestimated deep sleep by 68 minutes. No significant difference was, however found for light sleep and average HR. \nConclusion: The WSW showed mixed results compared to PSG, with differences in total sleep duration, wake time and deep sleep duration but a good agreement for light sleep duration and heart rate. Further validation is needed with epoch-by-epoch comparison throughout the night for the WSW compared to PSG. \n \nKey words: Sleep stages, sleep duration, wearable devices, smartwatch, validation
Source: Skemman
Author: Sara Vöggsdóttir 1975-
Language: English
Topic: Sleep and related disorders
Subfield: Experimental and Cognitive Psychology
Field: Psychology
Domain: Social Sciences
Open Access status: green
OpenAlex ID: W7072307366