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Circadian rhythms and athletic performance.

C M Winget, C W DeRoshia, D C Holley

    Medicine and Science in Sports and Exercise
    |October 1, 1985
    PubMed
    Summary
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    Athletic performance fluctuates with daily circadian rhythms affecting physiology and behavior. Understanding these rhythms helps athletes mitigate jet-lag and optimize performance during travel.

    Area of Science:

    • Sports Science
    • Chronobiology
    • Human Physiology

    Background:

    • Circadian rhythms influence numerous physiological and behavioral functions critical for athletic performance.
    • These rhythms impact sensory, perceptual, cognitive, neuromuscular, cardiovascular, and metabolic variables, as well as aerobic capacity and actual performance proficiency.
    • Factors like workload, stress, motivation, sleep, and travel can modulate these rhythms.

    Purpose of the Study:

    • To raise awareness of the impact of circadian rhythms on athletic performance.
    • To provide a scientific basis for understanding the human circadian system in sports.
    • To guide coaches and athletes in managing circadian rhythm disruptions, particularly jet-lag.

    Main Methods:

    • Review of existing scientific literature on circadian rhythms and athletic performance.

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  • Analysis of factors influencing circadian rhythmicity and performance.
  • Examination of the effects of transmeridian travel (jet-lag) on athletes.

    • Main Results:

    • Circadian rhythms significantly affect athletic performance based on the timing of events.
    • Transmeridian travel can lead to circadian dysrhythmia ('jet-lag'), causing fatigue, sleep disturbance, and performance decline.
    • Factors such as flight direction, meal timing, and individual traits influence jet-lag severity and recovery.

    Conclusions:

    • Circadian rhythms are a crucial, yet often overlooked, factor in athletic success.
    • Awareness and strategic management of circadian rhythms can minimize negative impacts of travel on athletes.
    • Further research and application of chronobiology principles can enhance athletic decision-making and performance optimization.