Evidence map›Paper›PMID 42070107›Full record

ArticleJournal of the International Society of Sports Nutrition2026

Association between energy availability and sleep quality in elite female and male swimmers: a brief report.

Emily A Lundstrom, Mary Jane De Souza, Megan E Conklin, Nancy I Williams

Abstract read
In one paragraph

Article in Journal of the International Society of Sports Nutrition, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0cells of the map it votes in
0citing papers in PubMed
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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Emily A LundstromDepartment of Kinesiology, Women's Health and Exercise Laboratory, Pennsylvania State University, University Park, PA, USA.
Mary Jane De SouzaDepartment of Kinesiology, Women's Health and Exercise Laboratory, Pennsylvania State University, University Park, PA, USA.ORCID 0000-0001-5185-9710
Megan E ConklinDepartment of Kinesiology, Women's Health and Exercise Laboratory, Pennsylvania State University, University Park, PA, USA.
Nancy I WilliamsDepartment of Kinesiology, Women's Health and Exercise Laboratory, Pennsylvania State University, University Park, PA, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThere is a high prevalence of poor sleep quality and low energy availability (EA) in athletes during phases of intensive training, which poses significant risks for overreaching, improper recovery, and compromised training adaptations. To mitigate these risks, there is a need to explore the relationship between EA and sleep quality. To determine the interrelationships between EA and sleep quality, we assessed EA and sleep quality (sleep duration

methodsThe participants included 26 elite male (

resultsAmong all swimmers, 69% exhibited sub-optimal EA (<45 kcal/kg FFM/d). Male swimmers exhibited greater EA and SWS versus females (

conclusionHigher EA was significantly associated with greater REM and SWS durations, and with lower sleep debt in elite male and female college swimmers. Although cause and effect were not established, these findings provide preliminary evidence that adequate EA may support better sleep quality in elite collegiate swimmers. If this is confirmed, our results may suggest that athletes should get adequate sleep and consume adequate calories to support energy expenditure needs and optimize training and recovery. Future research should explore the underlying mechanisms and whether low EA causally impacts sleep quality.

Indexed as

Energy IntakeEnergy MetabolismSleepSleep QualitySwimmingAdolescentAthletesFemaleHumansMaleSleep DurationSleep, Slow-WaveYoung Adultelite athletesEnergy availabilityenergy deficiencysleepsports nutritionswimmers

Identifiers

PMID42070107
PMCPMC13142186

What Socratic holds

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Registered trials

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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 Socratic graph.