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Research guide

Sleep quality research

Sleep quality shapes adaptation. Treat it like a training variable.

Updated Oct 17, 2026

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)

Source papers linked to this outcome.

study

Sleep extension in athletes: what we know so far - A systematic review.

Human research · 2021 · Sleep medicine · PubMed 33352457

study

The Impact of Sleep Duration on Performance Among Competitive Athletes: A Systematic Literature Review.

Human research · 2020 · Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine · PubMed 29944513

study

Sleep Interventions Designed to Improve Athletic Performance and Recovery: A Systematic Review of Current Approaches.

Human research · 2018 · Sports medicine (Auckland, N.Z.) · PubMed 29352373

study

Global burden of enteric infectious diseases, diarrhoeal diseases, and corresponding aetiologies, 1990-2023: a systematic analysis for the Global Burden of Disease Study 2023.

Human research · 2026 · The Lancet. Infectious diseases · PubMed 42229499

study

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.

Human research · 2026 · Journal of sleep research · PubMed 41431161

study

The impact of a 40-min nap on neuromuscular fatigue profile and recovery following the 5-m shuttle run test.

Human research · 2024 · Journal of sleep research · PubMed 37803885

study

Effects of sleep extension on cognitive/motor performance and motivation in military tactical athletes.

Human research · 2019 · Sleep medicine · PubMed 31096123

study

The effect of acute sleep extension vs active recovery on post exercise recovery kinetics in rugby union players.

Human research · 2022 · PloS one · PubMed 35980956

study

Protocol for a randomized controlled trial investigating the effects of sleep extension on body weight and learning in children (More2Sleep).

Population not classified in the source record · 2026 · Frontiers in pediatrics · PubMed 42199500

study

Single-Night Sleep Extension Enhances Morning Physical and Cognitive Performance Across Time of Day in Physically Active University Students: A Randomized Crossover Study.

Population not classified in the source record · 2025 · Life (Basel, Switzerland) · PubMed 40868825

study

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.

Population not classified in the source record · 2023 · Children (Basel, Switzerland) · PubMed 37189987

study

Sleep Extension before Sleep Loss: Effects on Performance and Neuromuscular Function.

Human research · 2016 · Medicine and science in sports and exercise · PubMed 27015382

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Sources