Evidence map›Paper›PMID 26611945›Full record

ArticleSleep medicine2015

Habitual sleep variability, mediated by nutrition intake, is associated with abdominal obesity in adolescents.

Fan He, Edward O Bixler, Jiangang Liao, Arthur Berg, Yuka Imamura Kawasawa, Julio Fernandez-Mendoza, Alexandros N Vgontzas, Duanping Liao

Open access · greenAbstract read
In one paragraph

Article in Sleep medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed, 4 pooled it
9.4field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

61 citing papers in PubMed, 4 syntheses or guidelines pooled it, 101 citations in OpenAlex.

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  15. Edward O. Bixler, PhD: from the Apollo project and chimpanzees to sleep epidemiology.Sleep advances : a journal of the Sleep Research Society · 2024
    Article
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1 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 1 institution in 2 countries.

Fan HeDepartment of Public Health Sciences, The Pennsylvania State University College of Medicine, Hershey, PA, USA.
Edward O BixlerSleep Research and Treatment Center, Department of Psychiatry, The Pennsylvania State University College of Medicine, Hershey, PA, USA.
Jiangang LiaoDepartment of Public Health Sciences, The Pennsylvania State University College of Medicine, Hershey, PA, USA.
Arthur BergDepartment of Public Health Sciences, The Pennsylvania State University College of Medicine, Hershey, PA, USA.
Yuka Imamura KawasawaInstitute for Personalized Medicine, Departments of Biochemistry and Molecular Biology and Pharmacology, The Pennsylvania State University College of Medicine, Hershey, PA, USA.
Julio Fernandez-MendozaSleep Research and Treatment Center, Department of Psychiatry, The Pennsylvania State University College of Medicine, Hershey, PA, USA.
Alexandros N VgontzasSleep Research and Treatment Center, Department of Psychiatry, The Pennsylvania State University College of Medicine, Hershey, PA, USA.
Duanping LiaoDepartment of Public Health Sciences, The Pennsylvania State University College of Medicine, Hershey, PA, USA. Electronic address: dliao@psu.edu.
Pennsylvania State University · US

Funding

Penn State Clinical and Translational Science InstituteUL1TR000127 · NCATS · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI SINOWAY, LAWRENCE I · 2012 to 2015
$17.1M
Sleep and cardio-metabolic risk factors: a prospective study of adolescentsR01HL097165 · NHLBI · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI BIXLER, EDWARD O., LIAO, DUANPING · 2010 to 2013
$2.2M
PREVALENCE OF SLEEP DISORDERED BREATHING IN CHILDRENR01HL063772 · NHLBI · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI BIXLER, EDWARD O. · 2001 to 2005
$1.3M
Sleep-disordered breathing, sleep stages, and heart rate variability in childrenR21HL087858 · NHLBI · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI LIAO, DUANPING · 2007 to 2008
$403k
NCATS NIH HHS UL1 TR000127NHLBI NIH HHS 1 R01 HL 097165NHLBI NIH HHS R01 HL063772NHLBI NIH HHS R01 HL097165NHLBI NIH HHS R01 HL63772NHLBI NIH HHS R21 HL087858
6 · The paper itself

Abstract

objectiveTo investigate habitual sleep duration (HSD) and habitual sleep variability (HSV) in relation to abdominal obesity and nutrient intake as mediating factors in adolescents.

methodsWe analyzed data from 305 adolescents who participated in the Penn State Child Cohort follow-up examination. An actigraphy device was used for seven consecutive nights to calculate HSD and HSV. Abdominal obesity was assessed by dual-energy x-ray absorptiometry. The Youth/Adolescent Food Frequency Questionnaire was used to obtain daily total caloric, protein, fat, and carbohydrates intakes. Linear regression models were used to associate HSD and HSV with abdominal obesity and to qualitatively identify mediating factors. The mediating effect was quantitatively estimated by mediation models.

resultsAfter adjusting for major covariates and HSD, higher HSV was significantly associated with abdominal obesity measures. For example, with 1-hour increase in HSV, android/gynoid fat ratio and visceral fat area increased by 0.02 cm(2) (standard error = 0.01, p = 0.03) and 6.86 cm(2) (standard error = 2.82, p = 0.02), respectively. HSD was not associated with abdominal obesity in HSV-adjusted models. Total caloric, fat, and carbohydrate intakes were significant mediating factors. For instance, 20% of the association between HSV and visceral fat can be attributed to carbohydrate intake.

conclusionsHigher HSV, not HSD, is significantly associated with abdominal obesity, which can be partially explained by increased caloric intake, especially from carbohydrate, in adolescents. This study suggests that more attention should be paid to establish and maintain regular sleep patterns in adolescents.

Indexed as

ActigraphyAdolescentBody Mass IndexCohort StudiesDyssomniasEnergy IntakeFemaleFollow-Up StudiesHealth SurveysHumansMaleObesity, AbdominalSleepSurveys and QuestionnairesAbdominal obesityNutrition intakeSleep variability

Identifiers

PMID26611945
PMCPMC4662770
OpenAlexW1911952008

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.