Evidence map›Paper›PMID 29438540›Full record

Trial reportSleep2018

Influence of sleep restriction on weight loss outcomes associated with caloric restriction.

Xuewen Wang, Joshua R Sparks, Kimberly P Bowyer, Shawn D Youngstedt

Registry-linked trialOpen access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Sleep, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02413866 (Weight Outlooks by Restriction of Diet and Sleep), which is not on this map. Cited by 23 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 3 pooled it
5.0field-weighted citation impact, top 5% 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.

NCT02413866 nacompletednot on this map

Weight Outlooks by Restriction of Diet and Sleep

TypeinterventionalSponsorUniversity of South CarolinaRan2015 to 2016Enrolled36ConditionsWeightArmsCalorie restriction only, Sleep & calorie restriction
3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 3 syntheses or guidelines pooled it, 49 citations in OpenAlex.

  1. Sleep and Its Impact on the Success of Weight Loss Interventions in Adults With Excess Weight: A Systematic Review.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2026
    Pooled it
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  6. Examining the Role of Sleep in Body Weight Regulation and Implications for Obesity Treatment: A Narrative Review.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2026
    Review
  7. Article
  8. Article
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  13. Review
  14. Cross-Sectional and Individual Relationships between Physical Activity and Glycemic Variability.Translational journal of the American College of Sports Medicine · 2022
    Article
  15. Examining the Role of Exercise Timing in Weight Management: A Review.International journal of sports medicine · 2021
    Review
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  17. Article
  18. Review
  19. Article
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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

4 authors at 1 institution in 1 country.

Xuewen WangDepartment of Exercise Science, University of South Carolina, Columbia, SC.
Joshua R SparksDepartment of Exercise Science, University of South Carolina, Columbia, SC.
Kimberly P BowyerDepartment of Exercise Science, University of South Carolina, Columbia, SC.
Shawn D YoungstedtDepartment of Exercise Science, University of South Carolina, Columbia, SC.
University of South Carolina · US

Funding

American Heart Association-American Stroke Association 14BGIA20380706
6 · The paper itself

Abstract

Study Objectives: To examine the effects of moderate sleep restriction (SR) on body weight, body composition, and metabolic variables in individuals undergoing caloric restriction (CR). Methods: Overweight or obese adults were randomized to an 8 week caloric restriction (CR) regimen alone (n = 15) or combined with sleep restriction (CR + SR) (n = 21). All participants were instructed to restrict daily calorie intake to 95 per cent of their measured resting metabolic rate. Participants in the CR + SR group were also instructed to reduce time in bed on five nights and to sleep ad libitum on the other two nights each week. Results: The CR + SR group reduced sleep by 57 ± 36 min per day during SR days and increased sleep by 59 ± 38 min per day during ad libitum sleep days, resulting in a sleep reduction of 169 ± 75 min per week. The CR and CR + SR groups lost similar amounts of weight, lean mass, and fat mass. However, the proportion of total mass lost as fat was significantly greater (p = 0.016) in the CR group. This proportion was greater than body fat percentage at baseline for the CR (p = 0.0035), but not the CR + SR group. Resting respiratory quotient was reduced (p = 0.033) only in CR, and fasting leptin concentration was reduced only in CR + SR (p = 0.029). Conclusions: Approximately 1 hr of SR on five nights a week led to less proportion of fat mass loss in individuals undergoing hypocaloric weight loss, despite similar weight loss. SR may adversely affect changes in body composition and "catch-up" sleep may not completely reverse it. Clinical trial registration: ClinicalTrials.gov (NCT02413866).

Indexed as

Caloric RestrictionAdultBasal MetabolismBody CompositionBody Mass IndexBody WeightFemaleHumansMaleMiddle AgedObesitySleepSleep DeprivationWeight Loss

Identifiers

PMID29438540
PMCPMC8591680
OpenAlexW2790237609

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.