Evidence map›Paper›PMID 32074620›Full record

ArticleObesity facts2020

Sleeping Time, BMI, and Body Fat in Chinese Freshmen and Their Interrelation.

Yehong Yang, Qing Miao, Xiaoming Zhu, Lang Qin, Wei Gong, Shuo Zhang, Qiongyue Zhang, Bin Lu, Hongying Ye, Yiming Li

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Obesity facts, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
3.6field-weighted citation impact, top 7% 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

12 citing papers in PubMed, 22 citations in OpenAlex.

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  8. Sleep, Physical Activity, and Diet of Adults during the Second Lockdown of the COVID-19 Pandemic in Greece.International journal of environmental research and public health · 2021
    Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 2 institutions in 1 country.

Yehong YangDepartment of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China.
Qing MiaoDepartment of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China, carmel@139.com.
Xiaoming ZhuDepartment of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China.
Lang QinDepartment of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China.
Wei GongDepartment of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China.
Shuo ZhangDepartment of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China.
Qiongyue ZhangDepartment of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China.
Bin LuDepartment of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China.
Hongying YeDepartment of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China.
Yiming LiDepartment of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China.
Fudan University · CNHuashan Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionIn the past two decades, urbanization in many Asian countries has led to sedentary lifestyle and overnutrition, which has set the stage for the epidemic of obesity. Those who have obesity during adolescence usually have obesity into adulthood, which causes many medical and psychological issues that can result in premature death. Recent data suggest that short sleep duration may contribute to the risk of obesity, opening a new avenue for potential intervention. The aim of this study was to describe the prevalence of sleeping time, body mass index (BMI), and fat mass in Chinese freshmen and to indicate the relationship among them.

methodsWe conducted a cross-sectional study consisting of 1,938 freshmen aged from 18 to 24 years, including 684 (35.3%) men and 1,254 (64.7%) women. BMI, sleeping time, and other potential related variables were collected by questionnaire. Obesity and overweight were defined as BMI ≥28.0 and ≥24.0, respectively. All students were divided into three groups according to the tertiles of body fat percentage (Fat%), which were measured by bioelectrical impedance analysis. Sleeping time was divided into 3 categories based on the duration, <6, 6-8, and >8 h per day.

resultsParticipants who slept longer had lower BMI and Fat%. Sex, diet control, and maternal obesity were all significantly associated with BMI or Fat% after adjustment. There were significant differences between sleeping time <6 and >8 h in both overweight group and Fat% tertiles independent of adjustment used. The significant difference between sleeping time 6-8 and >8 h only existed in overweight group, while irrelevant relation was observed in both models of obesity group.

conclusionLonger sleeping time was associated with a lower BMI in Chinese freshmen, even after adjustment for multiple confounders. The overweight stage is a critical period of weight management intervention by changing sleeping time. If adolescents have entered the obesity stage, the effect size of lifestyle intervention might be significantly limited.

Indexed as

Body Mass IndexAdipose TissueAdolescentAdultBody CompositionBody WeightChinaCross-Sectional StudiesFemaleHumansLife StyleMaleObesityOverweightPregnancyPrevalenceBMIBody fatFreshmenSleep

Identifiers

PMID32074620
PMCPMC7250351
OpenAlexW3007915803

What OpenQuestion holds

Textmetadata
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.