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Fakulteta za šport, Ljubljana (FSPLJ)
  • Chronobiology
    Cheung, Stephen Sau-Shing ; Ainslie, Philip N. ; Morrison, Shawnda A.
    Modern society and the globalization of sport impose great demands on athletes and workers. Apart from the need for regular sleep, the body's physiological responses, including temperature and ... release of hormones like melatonin and cortisol, fluctuate over the 24 h circadian cycle. Not surprisingly, cognitive and exercise capacity also exhibit a circadian pattern, with muscle strength and sprint performance higher in the afternoon than in the morning. A sudden desynchronization of the natural circadian rhythms from ordinary patterns, as occurs with night-time work and shift work, can lead to major problems with both mental and physical capacity, and this shift work-induced fatigue may be a major contributor to increased errors and the risk for accidents in many occupational settings. Athletes may be required to travel often over multiple time zones for training and competition, and the physiological and psychological stress of travel may impair performance for days following arrival, with these changes falling under the umbrella term of jet lag. The susceptibility to, and intensity of, jet lag are highly variable from one person to another, and the fitness of athletes does not appear to provide general protection. Besides careful planning and scheduling of travel, the use of melatonin and bright light exposure are two interventions that can accelerate the readjustment of circadian rhythms to local time zones following transmeridian travel.
    Vir: Advanced environmental exercise physiology (Str. 211-226)
    Vrsta gradiva - članek, sestavni del
    Leto - 2022
    Jezik - angleški
    COBISS.SI-ID - 76037635

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