Citation

Smith DL, Petruzzello SJ, Chludzinski MA, Reed JJ, Woods JA. Ergonomics 2005; 48(1): 55-65.

Affiliation

Exercise Science, Skidmore College, Saratoga Springs, NY 12866, USA. dsmith@skidmore.edu

Copyright

(Copyright © 2005, Informa - Taylor and Francis Group)

DOI

10.1080/00140130412331303911

PMID

15764306

Abstract

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.

Language: en