Smith D L, Petruzzello S J, Chludzinski M A, Reed J J, Woods J A
Exercise Science, Skidmore College, Saratoga Springs, NY 12866, USA.
Ergonomics. 2005 Jan;48(1):55-65. doi: 10.1080/00140130412331303911.
This study investigated the effects of strenuous live-fire firefighting drills and a 90 min recovery period on selected hormonal, immunological and psychological variables. Apparently healthy, male, professional firefighters (n = 11) performed three trials of standardized firefighting tasks in a live-fire training structure. There was significant leukocytosis immediately post firefighting activity that persisted following recovery, although there was a variable response among the leukocyte subsets. Most notable was the decrease in number and percentage of lymphocytes following 90 min of recovery. Plasma levels of ACTH and cortisol were significantly elevated post firefighting activity and cortisol remained elevated following 90 min of recovery. Elevated cortisol immediately following activity was related to reduced feelings of energy. These data demonstrate the magnitude of the physiological and psychological disruption following strenuous firefighting activity and suggest that immune function may be altered following such activity. This is a finding that may have practical consequences for this group of first responders.
本研究调查了高强度实火灭火演练及90分钟恢复期对选定的激素、免疫和心理变量的影响。表面健康的男性职业消防员（n = 11）在实火训练设施中进行了三次标准化灭火任务试验。灭火活动结束后立即出现显著的白细胞增多，恢复期后仍持续存在，尽管白细胞亚群之间的反应存在差异。最值得注意的是，恢复90分钟后淋巴细胞数量和百分比下降。灭火活动后促肾上腺皮质激素（ACTH）和皮质醇的血浆水平显著升高，恢复90分钟后皮质醇仍保持升高。活动后立即升高的皮质醇与能量感降低有关。这些数据表明了高强度灭火活动后生理和心理干扰的程度，并表明此类活动后免疫功能可能会发生改变。这一发现可能会对这群急救人员产生实际影响。
