When work involving muscular exertion is performed by the human body over a sustained period of time in an atmosphere having a high external temperature and a high humidity, the pathologic effects of heat accumulation are frequently observed. Such a condition represents a potentially serious medical problem and one which may prove rapidly fatal in its later stages. Its proper control and treatment are highly important, especially when a large number of individuals are concerned.
This problem has been recognized and studied by many industrial plants and organizations over some years, and a great deal of progress has already been made in its management.
Modern warfare has focused further attention on heat exhaustion because of its high casualty rate in operations under adverse climatic conditions, especially in tropical and semitropical locations. Both the British and American armies have encountered the problem in training as well as in combat operations. In
BORDEN DL, WADDILL JF, GRIER GS. STATISTICAL STUDY OF 265 CASES OF HEAT DISEASE. JAMA. 1945;128(17):1200–1205. doi:10.1001/jama.1945.02860340006002
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