Academic Journal
Comparison of a thigh worn accelerometer algorithm with diary estimates of time in bed and time asleep: the 1970 British Cohort Study
| العنوان: | Comparison of a thigh worn accelerometer algorithm with diary estimates of time in bed and time asleep: the 1970 British Cohort Study |
|---|---|
| المؤلفون: | Inan-Eroglu, E, Huang, B-H, Shepherd, L, Pearson, N, Koster, A, Palm, P, Cistulli, P, Hamer, M, Stamatakis, E |
| المصدر: | Journal for the Measurement of Physical Behaviour , 4 (1) pp. 60-67. (2021) |
| سنة النشر: | 2021 |
| المجموعة: | University College London: UCL Discovery |
| مصطلحات موضوعية: | activPAL, sleep, sleep diary |
| الوصف: | Background: Thigh-worn accelerometers have established reliability and validity for measurement of free-living physical activity-related behaviors. However, comparisons of methods for measuring sleep and time in bed using the thigh-worn accelerometer are rare. The authors compared the thigh-worn accelerometer algorithm that estimates time in bed with the output of a sleep diary (time in bed and time asleep). Methods: Participants (N = 5,498), from the 1970 British Cohort Study, wore an activPAL device on their thigh continuously for 7 days and completed a sleep diary. Bland–Altman plots and Pearson correlation coefficients were used to examine associations between the algorithm derived and diary time in bed and asleep. Results: The algorithm estimated acceptable levels of agreement with time in bed when compared with diary time in bed (mean bias of −11.4 min; limits of agreement −264.6 to 241.8). The algorithm-derived time in bed overestimated diary sleep time (mean bias of 55.2 min; limits of agreement −204.5 to 314.8 min). Algorithm and sleep diary are reasonably correlated (ρ = .48, 95% confidence interval [.45, .52] for women and ρ = .51, 95% confidence interval [.47, .55] for men) and provide broadly comparable estimates of time in bed but not for sleep time. Conclusions: The algorithm showed acceptable estimates of time in bed compared with diary at the group level. However, about half of the participants were outside of the ±30 min difference of a clinically relevant limit at an individual level. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | text |
| اللغة: | English |
| Relation: | https://discovery.ucl.ac.uk/id/eprint/10120536/3/Hamer_SleepComparison_manuscript_R2_JMPB.pdf; https://discovery.ucl.ac.uk/id/eprint/10120536/ |
| الاتاحة: | https://discovery.ucl.ac.uk/id/eprint/10120536/3/Hamer_SleepComparison_manuscript_R2_JMPB.pdf https://discovery.ucl.ac.uk/id/eprint/10120536/ |
| Rights: | open |
| رقم الانضمام: | edsbas.2BC40373 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |