REF-972 · Walsh et al., 2020 · British Journal of Sports Medicine, Vol. · Paper · PubMed

Sleep and the athlete: narrative review and 2021 expert consensus recommendations

B+moderate evidenceMeasured on elite to world-class athletesWritten before October 2026, being re-checked

This narrative review and expert consensus states that elite athletes are particularly susceptible to sleep inadequacies — habitual short sleep (<7 hours/night) and poor sleep quality such as sleep fragmentation. Performance is reduced by a night or more without sleep, but the effect of partial sleep restriction over 1-3 nights, the more real-world scenario, remains unclear.

Athlete sleep research often suffers from inadequate experimental control, a lack of females and doubts about the validity of the sleep assessment tools. The consensus ends with a sleep toolbox for practitioners and recommends an individualised approach rather than a one-size-fits-all target.

Participants

Not applicable — narrative review and expert consensus. No number of studies is given in the abstract.

Protocol

Narrative review of sleep in athletes: prevalence of sleep inadequacy, effects on performance and health, risk factors.
Expert consensus recommendations, ending in a sleep toolbox for practitioners (for example sleep education and screening). The consensus method is not described in the abstract.

Key Results

Elite athletes are particularly susceptible to habitual short sleep (<7 hours/night) and poor sleep quality.
Performance is reduced by a night or more without sleep; the influence of partial sleep restriction over 1-3 nights remains unclear.
In the wider population, habitually sleeping <7 hours/night increases susceptibility to respiratory infection.
Athlete sleep is influenced by sport-specific factors (training, travel and competition) and non-sport factors (for example female gender, stress and anxiety).
A one-size-fits-all recommendation (for example 7-9 hours/night) is "unlikely ideal for health and performance".
Research is needed into the benefits of napping and sleep extension (for example banking sleep).

Practical Application

This narrative review and 2021 expert consensus finds that elite athletes commonly sleep short (<7 hours/night) and poorly, that a night or more without sleep reduces performance while the cost of 1-3 nights of partial restriction remains unclear, and that a one-size-fits-all target such as 7-9 hours/night is unlikely ideal — it recommends an individualised approach that considers the athlete's perceived sleep needs. To "how much sleep do I need?": no single number; start from what the athlete feels they need and whether they get it.
Do not overstate one or two short nights: the consensus itself calls that evidence unclear. The clear harm is a night or more without sleep.
Habitual short sleep is also a health question: in the wider population, sleeping <7 hours/night raises susceptibility to respiratory infection.
Look for the cause before the fix: training, travel and competition on the sport side; stress and anxiety outside it.
Not from this paper; the base's own practice: the working rules for a short night, naps and evening caffeine are in SYNTH-07.

Limitations

Narrative review; no systematic search, and the abstract gives no effect sizes.
The consensus process (panel method, voting) is not described in the abstract.
The authors themselves note weak experimental control, few female participants and uncertain validity of sleep assessment tools in the underlying studies.
The infection finding comes from the wider population, not from athletes.
Written from the abstract and record metadata only (full text not read).
How this entry was checked and changed
Why this level

authoritative narrative review and expert consensus; not a systematic review, and the abstract describes no formal consensus method