Validation of MotionWatch8 Actigraphy Against Polysomnography in Menopausal Women Under Warm Conditions
This study evaluated the agreement between MotionWatch8 actigraphy and polysomnography (PSG) in measuring sleep parameters among menopausal women under controlled 30 °C laboratory conditions. Sixteen peri- and post-menopausal women (age: 51.4 ± 4.2 years, BMI: 26.0 ± 3.1 kg/m<sup>2</sup>...
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MDPI AG
2025-05-01
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| author | Xinzhu Li Mark Halaki Chin Moi Chow |
| author_facet | Xinzhu Li Mark Halaki Chin Moi Chow |
| author_sort | Xinzhu Li |
| collection | DOAJ |
| description | This study evaluated the agreement between MotionWatch8 actigraphy and polysomnography (PSG) in measuring sleep parameters among menopausal women under controlled 30 °C laboratory conditions. Sixteen peri- and post-menopausal women (age: 51.4 ± 4.2 years, BMI: 26.0 ± 3.1 kg/m<sup>2</sup>) contributed 59 nights of simultaneous recordings, with parameters analyzed using Bland–Altman plots, linear mixed model analysis, and epoch-by-epoch comparisons. Results showed MotionWatch8 significantly overestimated total sleep time by 18.6 min and sleep efficiency by 3.5%, while underestimating sleep onset latency by 11.2 min and wake after sleep onset by 9.1 min compared to PSG. Significant proportional errors were observed, particularly for participants with prolonged sleep onset latency, high wake after sleep onset, and lower sleep efficiency. Epoch-by-epoch analysis revealed high sensitivity for sleep detection (94.8%) but low specificity for wake detection (33.1%), with 87.3% overall accuracy. These findings demonstrate that MotionWatch8 may be less reliable for individuals with more extreme sleep characteristics, such as insomnia, as measurement accuracy declines with increasing severity of sleep disturbances, highlighting the need for caution when using this device for detailed sleep assessments in clinical populations with sleep disturbances. |
| format | Article |
| id | doaj-art-9d7dbf2e22c04454bb331e241163a321 |
| institution | DOAJ |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
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| spelling | doaj-art-9d7dbf2e22c04454bb331e241163a3212025-08-20T03:12:15ZengMDPI AGSensors1424-82202025-05-012510304010.3390/s25103040Validation of MotionWatch8 Actigraphy Against Polysomnography in Menopausal Women Under Warm ConditionsXinzhu Li0Mark Halaki1Chin Moi Chow2Sydney School of Health Sciences, Faculty of Medicine and Health, University of Sydney, Camperdown, NSW 2050, AustraliaSydney School of Health Sciences, Faculty of Medicine and Health, University of Sydney, Camperdown, NSW 2050, AustraliaSydney School of Health Sciences, Faculty of Medicine and Health, University of Sydney, Camperdown, NSW 2050, AustraliaThis study evaluated the agreement between MotionWatch8 actigraphy and polysomnography (PSG) in measuring sleep parameters among menopausal women under controlled 30 °C laboratory conditions. Sixteen peri- and post-menopausal women (age: 51.4 ± 4.2 years, BMI: 26.0 ± 3.1 kg/m<sup>2</sup>) contributed 59 nights of simultaneous recordings, with parameters analyzed using Bland–Altman plots, linear mixed model analysis, and epoch-by-epoch comparisons. Results showed MotionWatch8 significantly overestimated total sleep time by 18.6 min and sleep efficiency by 3.5%, while underestimating sleep onset latency by 11.2 min and wake after sleep onset by 9.1 min compared to PSG. Significant proportional errors were observed, particularly for participants with prolonged sleep onset latency, high wake after sleep onset, and lower sleep efficiency. Epoch-by-epoch analysis revealed high sensitivity for sleep detection (94.8%) but low specificity for wake detection (33.1%), with 87.3% overall accuracy. These findings demonstrate that MotionWatch8 may be less reliable for individuals with more extreme sleep characteristics, such as insomnia, as measurement accuracy declines with increasing severity of sleep disturbances, highlighting the need for caution when using this device for detailed sleep assessments in clinical populations with sleep disturbances.https://www.mdpi.com/1424-8220/25/10/3040validationPSGpolysomnographyactigraphysleepmenopause |
| spellingShingle | Xinzhu Li Mark Halaki Chin Moi Chow Validation of MotionWatch8 Actigraphy Against Polysomnography in Menopausal Women Under Warm Conditions Sensors validation PSG polysomnography actigraphy sleep menopause |
| title | Validation of MotionWatch8 Actigraphy Against Polysomnography in Menopausal Women Under Warm Conditions |
| title_full | Validation of MotionWatch8 Actigraphy Against Polysomnography in Menopausal Women Under Warm Conditions |
| title_fullStr | Validation of MotionWatch8 Actigraphy Against Polysomnography in Menopausal Women Under Warm Conditions |
| title_full_unstemmed | Validation of MotionWatch8 Actigraphy Against Polysomnography in Menopausal Women Under Warm Conditions |
| title_short | Validation of MotionWatch8 Actigraphy Against Polysomnography in Menopausal Women Under Warm Conditions |
| title_sort | validation of motionwatch8 actigraphy against polysomnography in menopausal women under warm conditions |
| topic | validation PSG polysomnography actigraphy sleep menopause |
| url | https://www.mdpi.com/1424-8220/25/10/3040 |
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