Outcome
Sleep quality
Sleep quality shapes adaptation. Treat it like a training variable.
What to do first
- • Consistent wake time + morning light exposure.
- • Avoid late-day caffeine and late hard sessions when possible.
- • Track trends over 2 weeks, not single nights.
Related topic guides
Protocols and decisions connected to this outcome.
Study library (reference)
Studies that measured this outcome.
Sleep extension in athletes: what we know so far - A systematic review.
PMID 33352457 (2021): sleep extension — Sleep quality, Recovery speed (study note for endurance athletes).
The Impact of Sleep Duration on Performance Among Competitive Athletes: A Systematic Literature Review.
PMID 29944513 (2020): circadian — Sleep quality, Recovery speed (study note for endurance athletes).
Sleep Interventions Designed to Improve Athletic Performance and Recovery: A Systematic Review of Current Approaches.
PMID 29352373 (2018): sleep extension, nap — Sleep quality, Recovery speed (study note for endurance athletes).
Global burden of enteric infectious diseases, diarrhoeal diseases, and corresponding aetiologies, 1990-2023: a systematic analysis for the Global Burden of Disease Study 2023.
PMID 42229499 (2026): global, burden — Sleep quality, Recovery speed (study note for endurance athletes).
Acute Effects of Sleep Extension on Fatigue, Inhibitory Control, Short-Term Vigilance and Neuromuscular Function in Youth Elite Ice Hockey Players: A Randomised Crossover Trial.
PMID 41431161 (2026): sleep extension — Sleep quality, Recovery speed (study note for endurance athletes).
The impact of a 40-min nap on neuromuscular fatigue profile and recovery following the 5-m shuttle run test.
PMID 37803885 (2024): nap, napping — Sleep quality, Recovery speed (study note for endurance athletes).
Effects of sleep extension on cognitive/motor performance and motivation in military tactical athletes.
PMID 31096123 (2019): sleep extension — Sleep quality, Recovery speed (study note for endurance athletes).
The effect of acute sleep extension vs active recovery on post exercise recovery kinetics in rugby union players.
PMID 35980956 (2022): sleep extension — Sleep quality, Recovery speed (study note for endurance athletes).
Protocol for a randomized controlled trial investigating the effects of sleep extension on body weight and learning in children (More2Sleep).
PMID 42199500 (2026): sleep extension — Sleep quality, Recovery speed (study note for endurance athletes).
Single-Night Sleep Extension Enhances Morning Physical and Cognitive Performance Across Time of Day in Physically Active University Students: A Randomized Crossover Study.
PMID 40868825 (2025): sleep extension, circadian — Sleep quality, Recovery speed (study note for endurance athletes).
A Cluster Randomized Controlled Trial of the Archena Infancia Saludable Project on 24-h Movement Behaviors and Adherence to the Mediterranean Diet among Schoolchildren: A Pilot Study Protocol.
PMID 37189987 (2023): cluster, controlled — Sleep quality, Recovery speed (study note for endurance athletes).
Sleep Extension before Sleep Loss: Effects on Performance and Neuromuscular Function.
PMID 27015382 (2016): sleep extension, sleep deprivation — Sleep quality, Recovery speed (study note for endurance athletes).
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Sources
- Sleep extension in athletes: what we know so far - A systematic review.
- The Impact of Sleep Duration on Performance Among Competitive Athletes: A Systematic Literature Review.
- Sleep Interventions Designed to Improve Athletic Performance and Recovery: A Systematic Review of Current Approaches.
- Global burden of enteric infectious diseases, diarrhoeal diseases, and corresponding aetiologies, 1990-2023: a systematic analysis for the Global Burden of Disease Study 2023.
- Acute Effects of Sleep Extension on Fatigue, Inhibitory Control, Short-Term Vigilance and Neuromuscular Function in Youth Elite Ice Hockey Players: A Randomised Crossover Trial.
- The impact of a 40-min nap on neuromuscular fatigue profile and recovery following the 5-m shuttle run test.
- Effects of sleep extension on cognitive/motor performance and motivation in military tactical athletes.
- The effect of acute sleep extension vs active recovery on post exercise recovery kinetics in rugby union players.