Mobile Sleep Lab: Comparison of polysomnographic parameters with a conventional sleep laboratory.

In remote areas, visiting a laboratory for sleep testing is inconvenient. We, therefore, developed a Mobile Sleep Lab in a bus powered by fuel cells with two sleep measurement chambers. As the environment in the bus could affect sleep, we examined whether sleep testing in the Mobile Sleep Lab was as...

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Main Authors: Chihiro Suzuki, Yoko Suzuki, Takashi Abe, Takashi Kanbayashi, Shoji Fukusumi, Toshio Kokubo, Isamu Takahara, Masashi Yanagisawa
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2025-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0316579
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author Chihiro Suzuki
Yoko Suzuki
Takashi Abe
Takashi Kanbayashi
Shoji Fukusumi
Toshio Kokubo
Isamu Takahara
Masashi Yanagisawa
author_facet Chihiro Suzuki
Yoko Suzuki
Takashi Abe
Takashi Kanbayashi
Shoji Fukusumi
Toshio Kokubo
Isamu Takahara
Masashi Yanagisawa
author_sort Chihiro Suzuki
collection DOAJ
description In remote areas, visiting a laboratory for sleep testing is inconvenient. We, therefore, developed a Mobile Sleep Lab in a bus powered by fuel cells with two sleep measurement chambers. As the environment in the bus could affect sleep, we examined whether sleep testing in the Mobile Sleep Lab was as feasible as in a conventional sleep laboratory (Human Sleep Lab). We tested 15 healthy adults for four nights using polysomnography (the first two nights at the Human Sleep Lab or Mobile Sleep Lab with a switch to the other facility for the next two nights). Sleep variables of the four measurements were used to assess the discrepancy of different places or different nights. No significant differences were found between the laboratories other than the percentage of total sleep time in stage N3. Next, we analyzed the intraclass correlation coefficient to evaluate the test-retest reliability. The intraclass correlation coefficient between these two measurements: the Human Sleep Lab and Mobile Sleep Lab showed similar reliability for the same sleep variables. The intraclass correlation coefficient revealed that several sleep indexes, such as total sleep time, sleep efficiency, wake after sleep onset, percentage of stage N1, and stage R latency, showed poor reliabilities (<0.5) based on Koo and Li's criteria. In contrast, the percentage of stage N3 showed moderate (0.5-0.75) or good (0.75-0.9) reliabilities. As almost all sleep variables showed no difference and same level of test-retest reliability between the Mobile Sleep Lab and Human Sleep Lab, the Mobile Sleep Lab might be suitable for conducting polysomnography as a conventional sleep laboratory. The reduction in N3 in the Mobile Sleep Lab should be scrutinized in the larger sample, including sleep disorders. Practical application of the Mobile Sleep Lab can transform sleep medicine in remote areas.
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spelling doaj-art-1248ff6c1897443bad88875b209756ec2025-01-17T05:31:39ZengPublic Library of Science (PLoS)PLoS ONE1932-62032025-01-01201e031657910.1371/journal.pone.0316579Mobile Sleep Lab: Comparison of polysomnographic parameters with a conventional sleep laboratory.Chihiro SuzukiYoko SuzukiTakashi AbeTakashi KanbayashiShoji FukusumiToshio KokuboIsamu TakaharaMasashi YanagisawaIn remote areas, visiting a laboratory for sleep testing is inconvenient. We, therefore, developed a Mobile Sleep Lab in a bus powered by fuel cells with two sleep measurement chambers. As the environment in the bus could affect sleep, we examined whether sleep testing in the Mobile Sleep Lab was as feasible as in a conventional sleep laboratory (Human Sleep Lab). We tested 15 healthy adults for four nights using polysomnography (the first two nights at the Human Sleep Lab or Mobile Sleep Lab with a switch to the other facility for the next two nights). Sleep variables of the four measurements were used to assess the discrepancy of different places or different nights. No significant differences were found between the laboratories other than the percentage of total sleep time in stage N3. Next, we analyzed the intraclass correlation coefficient to evaluate the test-retest reliability. The intraclass correlation coefficient between these two measurements: the Human Sleep Lab and Mobile Sleep Lab showed similar reliability for the same sleep variables. The intraclass correlation coefficient revealed that several sleep indexes, such as total sleep time, sleep efficiency, wake after sleep onset, percentage of stage N1, and stage R latency, showed poor reliabilities (<0.5) based on Koo and Li's criteria. In contrast, the percentage of stage N3 showed moderate (0.5-0.75) or good (0.75-0.9) reliabilities. As almost all sleep variables showed no difference and same level of test-retest reliability between the Mobile Sleep Lab and Human Sleep Lab, the Mobile Sleep Lab might be suitable for conducting polysomnography as a conventional sleep laboratory. The reduction in N3 in the Mobile Sleep Lab should be scrutinized in the larger sample, including sleep disorders. Practical application of the Mobile Sleep Lab can transform sleep medicine in remote areas.https://doi.org/10.1371/journal.pone.0316579
spellingShingle Chihiro Suzuki
Yoko Suzuki
Takashi Abe
Takashi Kanbayashi
Shoji Fukusumi
Toshio Kokubo
Isamu Takahara
Masashi Yanagisawa
Mobile Sleep Lab: Comparison of polysomnographic parameters with a conventional sleep laboratory.
PLoS ONE
title Mobile Sleep Lab: Comparison of polysomnographic parameters with a conventional sleep laboratory.
title_full Mobile Sleep Lab: Comparison of polysomnographic parameters with a conventional sleep laboratory.
title_fullStr Mobile Sleep Lab: Comparison of polysomnographic parameters with a conventional sleep laboratory.
title_full_unstemmed Mobile Sleep Lab: Comparison of polysomnographic parameters with a conventional sleep laboratory.
title_short Mobile Sleep Lab: Comparison of polysomnographic parameters with a conventional sleep laboratory.
title_sort mobile sleep lab comparison of polysomnographic parameters with a conventional sleep laboratory
url https://doi.org/10.1371/journal.pone.0316579
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