Evidence map›Paper›PMID 32095263›Full record

ArticleBMJ open sport & exercise medicine2019

Sleep in elite swimmers: prevalence of sleepiness, obstructive sleep apnoea and poor sleep quality.

Pavol Surda, Matus Putala, Pavel Siarnik, Abigail Walker, Katherine De Rome, Nikul Amin, Miljyot Singh Sangha, Wytske Fokkens

Open access · goldAbstract read
In one paragraph

Article in BMJ open sport & exercise medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.8field-weighted citation impact, top 14% 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

11 citing papers in PubMed, 23 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Sleep Quality in Greek Adolescent Swimmers.Journal of functional morphology and kinesiology · 2024
    Article
  6. Article
  7. Sleep disorders and exercise: a mini-review.Journal of thoracic disease · 2023
    Review
  8. Article
  9. Article
  10. Article
  11. Review
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 3 institutions in 3 countries.

Pavol SurdaENT Department, Guy's and St Thomas' University Hospital, London, UK.ORCID 0000-0003-1453-0179
Matus PutalaDepartment of Physical Education and Sports, Comenius University, Bratislava, Slovakia.
Pavel SiarnikDepartment of Neurology, Comenius University, Bratislava, Slovakia.
Abigail WalkerENT Department, Guy's and St Thomas' University Hospital, London, UK.
Katherine De RomeENT Department, Guy's and St Thomas' University Hospital, London, UK.
Nikul AminENT Department, Guy's and St Thomas' University Hospital, London, UK.
Miljyot Singh SanghaENT Department, Guy's and St Thomas' University Hospital, London, UK.
Wytske FokkensAcademisch Medisch Centrum, Amsterdam, North Holland, The Netherlands.
St Thomas' Hospital · GBComenius University Bratislava · SKAmsterdam UMC Location University of Amsterdam · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesLimited data suggest that swimmers might be affected by poor quality of sleep significantly. The aim was to explore the prevalence of sleep disturbances in swimmers and possible link between rhinitis and sleep disturbance.

methodsStudy 1 was an observational case-control, questionnaire-based study involving 157 elite and non-elite swimmers, 36 non-swimming athletes and 50 controls. In study 2, we measured sleep quality and duration using actigraphy in 20 elite swimmers. We also looked for presence of sleep-disordered breathing using overnight pulse oximetry monitor.

resultsIn study 1, we observed a significant difference in prevalence of excessive daytime sleepiness between groups of elite swimmers and controls. Pittsburgh Sleep Quality Index (PSQI) scores do not suggest that quality of sleep in group of swimmers is impaired. In study 2, we found that prevalence of obstructive sleep apnoea (OSA) in elite swimmers defined as oxygen desaturation index ≥5 was 30%. Analysis of actigraphy data revealed that on nights prior to training days, 'going to' bed time was significantly earlier and total sleep time was significantly reduced.

conclusionSwimmers and non-swimming athletes suffer significantly more with excessive daytime sleepiness than healthy controls. In elite swimmers, this is likely linked to high prevalence of OSA. PSQI scores do not suggest that quality of sleep in group of swimmers is impaired, but actigraphy shows great variations between sleep pattern preceding training and rest day. This seems to be associated with early-morning sessions which can be a disruptive element of weekly sleep patterns.

Indexed as

Athleticssleepswimming

Identifiers

PMID32095263
PMCPMC7010988
OpenAlexW2997433354

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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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.