Circumpolar Special Issue: Human Health at the Ends of the Earth
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چکیده
Introduction: The diurnal rhythm of saliva cortisol and its association to adaptation, performance and health were examined in personnel over-wintering at two British Antarctic stations. Methods: In total, 55 healthy individuals (49 males, 6 females) participated in the study. Cortisol in saliva was sampled on 3 consecutive days (at awakening, 15 and 45 min after waking, at 15.00 h, and 22.00 h) immediately after arrival at the station, midwinter, and the last week before departure. Subjective health complaints were also measured at arrival, midwinter, and the last week before departure, while depression (Burnam screen for depression) and positive and negative affect (PANAS) were measured at midwinter only. At the end of the winter appointment, base commanders evaluated the performance of all personnel. Results: The variations in external light (darkness during winter, midnight sun during arrival and departure) did not influence the diurnal rhythms. The normal peak level in the morning, and the normal and gradual fall towards the evening were observed at arrival, midwinter, and before departure. Immediately after arrival the cortisol values were relatively high and correlated positively with base commander’s evaluation of performance. During midwinter, approximately 58% scored for depression on the Burnam
منابع مشابه
Human health at the ends of the earth.
The genesis of this special issue ‘Human Health at the ends of the earth’ was stimulated by the reinvigorated interest in promoting circumpolar health during the International Polar Year (IPY) 2007–2008. The IPY occurs approximately every 50 years and is a major international polar research program intended to expand the boundaries of our understanding of the Polar Regions. However unlike previ...
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متن کاملCircumpolar Special Issue: Human Health at the Ends of the Earth
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تاریخ انتشار 2010