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Sleep, circadian rhythms, and athletic performance.

Eirunn Thun1, Bjørn Bjorvatn2, Elisabeth Flo3

  • 1Department of Psychosocial Science, University of Bergen, Norway.

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Summary

Athletic performance peaks in the evening, influenced by core body temperature. Sleep deprivation hinders performance, while sleep extension improves it, affecting athletes based on circadian rhythms.

Keywords:
AthleticChronotypeCircadianDiurnalMorningnessPerformanceSleepSports

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Area of Science:

  • Sports Science
  • Sleep Medicine
  • Chronobiology

Background:

  • Sleep and circadian rhythms significantly influence human performance.
  • Athletic performance is particularly sensitive to disruptions in sleep and biological timing.
  • Existing research highlights the complex interplay between sleep, circadian rhythms, and athletic capabilities.

Purpose of the Study:

  • To systematically review the scientific literature on the impact of sleep and circadian rhythms on athletic performance.
  • To consolidate findings regarding the effects of sleep deprivation, sleep extension, and circadian desynchronization on athletes.
  • To identify key factors influencing performance outcomes in relation to biological timing and sleep status.

Main Methods:

  • Systematic literature search across three major databases.
  • Inclusion criteria applied to 113 relevant articles.
  • Analysis of findings related to sleep, circadian rhythms, and athletic performance metrics.

Main Results:

  • Athletic performance is generally optimal in the evening, coinciding with peak core body temperature.
  • Sleep deprivation demonstrably impairs athletic performance.
  • Sleep extension shows a positive effect on performance, while circadian desynchronization impacts vary with local time.

Conclusions:

  • Evening hours and peak core body temperature are associated with superior athletic performance.
  • Adequate sleep is crucial for optimal athletic functioning; deprivation is detrimental.
  • Understanding circadian influences is vital for scheduling and maximizing athletic potential.