Sleep duration and overweight in adolescents: self-reported sleep hours versus time diaries.
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| Title: | Sleep duration and overweight in adolescents: self-reported sleep hours versus time diaries. |
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| Authors: | Knutson KL (AUTHOR), Lauderdale DS (AUTHOR) |
| Source: | Pediatrics. May2007, Vol. 119 Issue 5, pe1056-62. 1p. |
| Abstract: | OBJECTIVE: Studies of children have found an inverse association between sleep duration and overweight on the basis of parental report of sleep duration. Studies in adolescents have been inconsistent but used varied measures of sleep. We used a nationally representative sample of adolescents that included 2 different measures of sleep duration (24-hour time diaries and self-reported usual sleep hours) to examine whether the association with overweight is sensitive to how sleep is measured in a single study population. We expected that the 2 measures of sleep would be strongly correlated and that the time-diary sleep would be more strongly associated with overweight risk because it is likely the more accurate measure of sleep. METHODS: In 2001-2002, adolescents from the Child Development Supplement of the Panel Study of Income Dynamics completed 24-hour time diaries on a random weekday and weekend. Adolescents also self-reported average sleep duration. Both sleep measures were categorized into quartiles. Height and weight were measured, and a BMI z score for age and gender was calculated. Overweight was defined as above the 95th percentile. RESULTS: The final sample included 767 male and 779 female subjects who were aged 10 to 19 years. Mean time-diary sleep was nearly 9 hours on weekdays and >10 hours on weekends. Mean self-reported sleep duration was 8 hours. Time-diary sleep and self-reported sleep were weakly correlated. Time-diary sleep was not significantly associated with overweight. Self-reported sleep was associated with overweight, but the association was not linear. When both sleep measures were included in the same model, their effects on overweight were independent. CONCLUSIONS: The weak correlation between self-reported sleep and time-diary sleep and the independence of their associations with overweight raise questions about what different measures of sleep duration in adolescents represent. [ABSTRACT FROM AUTHOR] |
| Copyright of Pediatrics is the property of American Academy of Pediatrics 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: | Psychology and Behavioral Sciences Collection |
| FullText | Text: Availability: 0 |
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| Header | DbId: pbh DbLabel: Psychology and Behavioral Sciences Collection An: 106131808 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Sleep duration and overweight in adolescents: self-reported sleep hours versus time diaries. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Knutson+KL%22">Knutson KL</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lauderdale+DS%22">Lauderdale DS</searchLink> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Pediatrics%22">Pediatrics</searchLink>. May2007, Vol. 119 Issue 5, pe1056-62. 1p. – Name: Abstract Label: Abstract Group: Ab Data: OBJECTIVE: Studies of children have found an inverse association between sleep duration and overweight on the basis of parental report of sleep duration. Studies in adolescents have been inconsistent but used varied measures of sleep. We used a nationally representative sample of adolescents that included 2 different measures of sleep duration (24-hour time diaries and self-reported usual sleep hours) to examine whether the association with overweight is sensitive to how sleep is measured in a single study population. We expected that the 2 measures of sleep would be strongly correlated and that the time-diary sleep would be more strongly associated with overweight risk because it is likely the more accurate measure of sleep. METHODS: In 2001-2002, adolescents from the Child Development Supplement of the Panel Study of Income Dynamics completed 24-hour time diaries on a random weekday and weekend. Adolescents also self-reported average sleep duration. Both sleep measures were categorized into quartiles. Height and weight were measured, and a BMI z score for age and gender was calculated. Overweight was defined as above the 95th percentile. RESULTS: The final sample included 767 male and 779 female subjects who were aged 10 to 19 years. Mean time-diary sleep was nearly 9 hours on weekdays and >10 hours on weekends. Mean self-reported sleep duration was 8 hours. Time-diary sleep and self-reported sleep were weakly correlated. Time-diary sleep was not significantly associated with overweight. Self-reported sleep was associated with overweight, but the association was not linear. When both sleep measures were included in the same model, their effects on overweight were independent. CONCLUSIONS: The weak correlation between self-reported sleep and time-diary sleep and the independence of their associations with overweight raise questions about what different measures of sleep duration in adolescents represent. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Pediatrics is the property of American Academy of Pediatrics 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.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=106131808 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1542/peds.2006-2597 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: e1056 Titles: – TitleFull: Sleep duration and overweight in adolescents: self-reported sleep hours versus time diaries. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Knutson KL – PersonEntity: Name: NameFull: Lauderdale DS IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2007 Type: published Y: 2007 Identifiers: – Type: issn-print Value: 00314005 Numbering: – Type: volume Value: 119 – Type: issue Value: 5 Titles: – TitleFull: Pediatrics Type: main |
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