Impact of carbon dioxide exposures on sleep latency among healthy volunteers: A randomized order, paired crossover study, evidence from the multiple sleep latency test.
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| Title: | Impact of carbon dioxide exposures on sleep latency among healthy volunteers: A randomized order, paired crossover study, evidence from the multiple sleep latency test. |
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| Authors: | Jin, Rui Nian1,2 (AUTHOR), Inada, Hitoshi1,3 (AUTHOR) hinada@tohoku.ac.jp, Momma, Haruki4 (AUTHOR), Ma, Dongmei4 (AUTHOR), Yuan, Keqing4 (AUTHOR), Nagatomi, Ryoichi1,2,4 (AUTHOR) ryoichi.nagatomi.c4@tohoku.ac.jp |
| Source: | Environmental Research. Dec2024:Part 1, Vol. 262, pN.PAG-N.PAG. 1p. |
| Subjects: | Sleep latency, Naps (Sleep), Carbon dioxide, Stroop effect, Industrial safety, Drowsiness |
| Abstract: | Daytime sleepiness affects work efficiency, occupational safety, and public health. Although previous studies have reported an association between environmental carbon dioxide (eCO 2) and daytime sleepiness, it has been challenging to draw a firm conclusion due to the lack of standardized sampling and profiling protocols. We examined the effect of pure CO 2 exposure at 5000 (ppm, parts per million) on daytime sleepiness. Eleven healthy participants (males of 24 ± 3 years, mean ± SD) completed a four-nap multiple sleep latency test (MSLT) protocol in the environmentally controlled chamber under two conditions: the CO 2 condition (4851 ± 229 ppm) and the Control condition (1102 ± 204 ppm). The subjective sleepiness level and cognitive performances were also evaluated using the Stanford Sleepiness Scale (SSS) questionnaire, Psychomotor Vigilance Test (PVT), and Stroop test after each nap session. A significant reduction in sleep latency was observed in the CO 2 exposure condition (Control vs. CO 2 = 13.1 ± 3.3 min vs. 9.7 ± 3.2 min). The subjective sleepiness scores were also significantly higher in the CO 2 exposure condition than in the Control condition (Control vs. CO 2 = 2.7 ± 0.5 vs. 4.7 ± 0.8). Cognitive responses after naps showed no significant difference across conditions. This study revealed that exposure to environmental CO 2 at a concentration as high as the upper safety limit at work sites significantly shortened the sleep latency and enhanced subjective sleepiness during naps in the MSLT without affecting cognitive responses after each exposure. Our results demonstrated that exposure to high environmental CO 2 induces daytime sleepiness that potentially compromises work efficiency and safety. • The CO 2 effect on daytime sleepiness was assessed by an objective procedure. • CO 2 exposure significantly shortened sleep latency and enhanced subjective sleepiness. • Cognitive responses were not significantly altered after CO 2 exposure. [ABSTRACT FROM AUTHOR] |
| Copyright of Environmental Research is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 180856263 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Impact of carbon dioxide exposures on sleep latency among healthy volunteers: A randomized order, paired crossover study, evidence from the multiple sleep latency test. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Jin%2C+Rui+Nian%22">Jin, Rui Nian</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Inada%2C+Hitoshi%22">Inada, Hitoshi</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> hinada@tohoku.ac.jp</i><br /><searchLink fieldCode="AR" term="%22Momma%2C+Haruki%22">Momma, Haruki</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ma%2C+Dongmei%22">Ma, Dongmei</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yuan%2C+Keqing%22">Yuan, Keqing</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nagatomi%2C+Ryoichi%22">Nagatomi, Ryoichi</searchLink><relatesTo>1,2,4</relatesTo> (AUTHOR)<i> ryoichi.nagatomi.c4@tohoku.ac.jp</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Environmental+Research%22">Environmental Research</searchLink>. Dec2024:Part 1, Vol. 262, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Sleep+latency%22">Sleep latency</searchLink><br /><searchLink fieldCode="DE" term="%22Naps+%28Sleep%29%22">Naps (Sleep)</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+dioxide%22">Carbon dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Stroop+effect%22">Stroop effect</searchLink><br /><searchLink fieldCode="DE" term="%22Industrial+safety%22">Industrial safety</searchLink><br /><searchLink fieldCode="DE" term="%22Drowsiness%22">Drowsiness</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Daytime sleepiness affects work efficiency, occupational safety, and public health. Although previous studies have reported an association between environmental carbon dioxide (eCO 2) and daytime sleepiness, it has been challenging to draw a firm conclusion due to the lack of standardized sampling and profiling protocols. We examined the effect of pure CO 2 exposure at 5000 (ppm, parts per million) on daytime sleepiness. Eleven healthy participants (males of 24 ± 3 years, mean ± SD) completed a four-nap multiple sleep latency test (MSLT) protocol in the environmentally controlled chamber under two conditions: the CO 2 condition (4851 ± 229 ppm) and the Control condition (1102 ± 204 ppm). The subjective sleepiness level and cognitive performances were also evaluated using the Stanford Sleepiness Scale (SSS) questionnaire, Psychomotor Vigilance Test (PVT), and Stroop test after each nap session. A significant reduction in sleep latency was observed in the CO 2 exposure condition (Control vs. CO 2 = 13.1 ± 3.3 min vs. 9.7 ± 3.2 min). The subjective sleepiness scores were also significantly higher in the CO 2 exposure condition than in the Control condition (Control vs. CO 2 = 2.7 ± 0.5 vs. 4.7 ± 0.8). Cognitive responses after naps showed no significant difference across conditions. This study revealed that exposure to environmental CO 2 at a concentration as high as the upper safety limit at work sites significantly shortened the sleep latency and enhanced subjective sleepiness during naps in the MSLT without affecting cognitive responses after each exposure. Our results demonstrated that exposure to high environmental CO 2 induces daytime sleepiness that potentially compromises work efficiency and safety. • The CO 2 effect on daytime sleepiness was assessed by an objective procedure. • CO 2 exposure significantly shortened sleep latency and enhanced subjective sleepiness. • Cognitive responses were not significantly altered after CO 2 exposure. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Environmental Research is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.envres.2024.119785 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Sleep latency Type: general – SubjectFull: Naps (Sleep) Type: general – SubjectFull: Carbon dioxide Type: general – SubjectFull: Stroop effect Type: general – SubjectFull: Industrial safety Type: general – SubjectFull: Drowsiness Type: general Titles: – TitleFull: Impact of carbon dioxide exposures on sleep latency among healthy volunteers: A randomized order, paired crossover study, evidence from the multiple sleep latency test. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Jin, Rui Nian – PersonEntity: Name: NameFull: Inada, Hitoshi – PersonEntity: Name: NameFull: Momma, Haruki – PersonEntity: Name: NameFull: Ma, Dongmei – PersonEntity: Name: NameFull: Yuan, Keqing – PersonEntity: Name: NameFull: Nagatomi, Ryoichi IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 12 Text: Dec2024:Part 1 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 00139351 Numbering: – Type: volume Value: 262 Titles: – TitleFull: Environmental Research Type: main |
| ResultId | 1 |
