circadian dysrhythmia

circadian dysrhythmia

[sərkā′dē·ən, sur′kədē′ən]
Etymology: L, circa, about, dies, day; Gk, dys, bad, rhythmos, rhythm
the biological and psychological stress effects of jet lag, or rapid travel through several time zones. In addition to a shift in normal eating and sleeping patterns, disruption of medication schedules and other therapies may occur.
References in periodicals archive ?
This "Jet Lag Campaign" has been created for people battling circadian dysrhythmia and offers a range of ingredients that help to balance the body's inner clock.
This psychophysiological impairment of well-being and performance is known as circadian dysrhythmia or jet lag.
Flying across several different time zones, especially from east to west, will also produce many physical and psychological stresses, known as jet lag or circadian dysrhythmia.
Although one might interpret these findings in support of a negligible influence of travel-induced circadian dysrhythmia on athletic performance, it must be noted that more than 70% of the games analyzed by Pace and Carron involved neither team crossing a time zone.
Although previous research possibly relevant to assessing the influence of circadian dysrhythmia on team athletic performance under short-distance travel conditions has failed to produce significant results, it may be that the null findings are the result of the methodology used in those studies rather than the lack of an influence of travel-related factors.
As such, each eastward traveling player crossing a single time zone may experience only a minor disturbance relative to each westward traveling player, but the additive effects of circadian dysrhythmia across all members of a team may lead to more pronounced deficits in overall performance between eastward and westward traveling teams.
Further supporting the circadian dysrhythmia explanation is the finding of a uniform disadvantage for eastward relative to westward traveling teams in terms of their offensive and defensive performance.
Because the flight was during the early morning hours, the crew experienced circadian dysrhythmia, which put them near the daily low of the circadian-rhythm cycle and amplified their fatigue.
Contributed by sleep neurology specialists from North America, Europe, Israel, and Australia, cases outline history, exam findings and special investigations, diagnosis, treatment, and management for insomnia, hypersomnias, sleep-breathing disorders, parasomnias, sleep-related epilepsy, stroke, sleep-related movement disorders, circadian dysrhythmias, and neuromuscular disorders, with differential diagnosis where appropriate.
With circadian dysrhythmias or chronic-sleeping difficulties, consult your flight surgeon for more help.