Evidence map›Paper›PMID 31191963›Full record

ArticleBMJ open sport & exercise medicine2019

Inter-relationship between sleep quality, insomnia and sleep disorders in professional soccer players.

Karim Khalladi, Abdulaziz Farooq, Sofiane Souissi, Christopher P Herrera, Karim Chamari, Lee Taylor, Farid El Massioui

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 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
3.8field-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

23 citing papers in PubMed, 3 syntheses or guidelines pooled it, 58 citations in OpenAlex.

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  19. Sleep and Performance in Professional Athletes.Current sleep medicine reports · 2023
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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

7 authors at 4 institutions in 4 countries.

Karim KhalladiExercise and Sports Science Department, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.ORCID 0000-0002-1522-4598
Abdulaziz FarooqAthlete Health and Performance Research, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.
Sofiane SouissiExercise and Sports Science Department, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.
Christopher P HerreraDepartment of Kinesiology and Human Performance, Sul Ross State University, Alpine, Texas, USA.
Karim ChamariAthlete Health and Performance Research, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.
Lee Taylor *Athlete Health and Performance Research, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.
Farid El Massioui *Laboratory CHArt, Universite Paris 8, Saint-Denis, France.
Qatar Orthopaedic and Sports Medicine Hospital · QALaboratoire Cognitions Humaine et Artificielle · FRLoughborough University · GBSul Ross State University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveInsufficient sleep duration and quality has negative effects on athletic performance, injury susceptibility and athlete development. This study aimed to assess the sleep characteristics of professional Qatar Stars League (QSL) soccer players.

methodsIn a cross-sectional study, QSL players (n=111; 23.7±4.8 years) completed three questionnaires to screen sleep disorders: (1) Pittsburgh Sleep Quality Index (PSQI), (2) Insomnia Severity Index (ISI) and (3) Epworth Sleepiness Scale (ESS). Poor sleep quality was defined as PSQI≥5, excessive daytime sleepiness was defined by ESS>8 and insomnia was defined as ISI≥11.

resultsThe prevalence of poor sleep quality (PSQI≥5) was 68.5%, with subthreshold insomnia (ISI≥11) 27.0% and daytime sleepiness 22.5% (ESS>8). Sleep quality was positively associated with insomnia (r=0.42, p<0.001) and daytime sleepiness (r=0.23, p=0.018). Age, anthropometry, body composition and ethnicity were not associated with any of the reported sleep quality parameters.

conclusionThe prevalence of poor sleep quality (68.5%) reported should concern practitioners. Increasing awareness of the importance of sleep relative to athletic performance, recovery, injury and illness appears prudent. Further, regular qualitative/quantitative sleep monitoring may help target subsequent evidence-informed interventions to improve sleep in those demonstrating undesirable sleep traits.

Indexed as

ArabEpworth Sleepiness Scale (ESS)Insomnia Severity Index (ISI)Middle EastPittsburgh Sleep Quality Index (PSQI)soccer

Identifiers

PMID31191963
PMCPMC6539148
OpenAlexW2940740911

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.