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Title
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Heart rate-based nighttime awakening detection
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Author
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Abstract
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| Sleep fragmentation is a cause of impaired daytime performance. We have developed an algorithm for detection of nighttime awakenings based on heart rate. As much as 15 healthy normal sleepers, 23 ± 3 years, participated in this study. The dataset contains 33 nights of polysomnographic (PSG) and electrocardiographic (ECG) measurements. After a habituation night, the subjects underwent a reference night without interventions, followed by some nights with interventions. These included noise, light, physical and cognitive interventions. Nighttime awakenings were subdivided in to awakenings (>15 s) and short awakenings (<15 s). The overall number of awakenings was 18.5 (±10.5) and short awakenings 13.2 (±10.5). The number of nighttime awakenings did not differ significantly between the reference and intervention nights; a repeated measures ANOVA resulted in a p value of 0.66 for awakenings and 0.57 for short awakenings. As much as 5 reference nights were used as training set, 28 as validation set. The algorithm detects the awakening periods with a sensitivity of 80.5% (confidence interval 77.982.9%). Heart rate is an adequate measure that allows for detection of nighttime awakenings and hence sleep quality. |
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Language
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English
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Source (journal)
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European journal of applied physiology. - Berlin, 2000, currens
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Publication
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Berlin
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2010
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ISSN
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1439-6319
[print]
1439-6327
[online]
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DOI
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10.1007/S00421-010-1359-0
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Volume/pages
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109
:2
(2010)
, p. 317-322
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ISI
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000277177000018
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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