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May 16, 1980

Heatstroke From Running

Author Affiliations

McMaster University Hamilton, Ontario

JAMA. 1980;243(19):1896. doi:10.1001/jama.1980.03300450012005

To the Editor.—  The article by Hanson and Zimmerman (242:154, 1979) points to a new aspect of an old problem now appearing on the clinical scene, heatstroke. The present problem is with the young and healthy who collapse on hot and humid days while fun running.As we have shown1 such incidents as heatstroke are occurring in fun runners even when environmental conditions would not ordinarily have been suspected to predispose to heat injury. Experience with Sydney's The Sun City-to-Surf Run, now in its tenth year, has resulted in a number of recommendations to prevent and treat victims of heat injury. This run now attracts 21,000 to 22,000 entrants annually, and the accumulated experience since the first race in 1971, with 2,005 entrants, to the present is with approximately 93,563 runners.2Since the inaugural race, when 29 runners collapsed, the incidence of heat casualties has declined mainly from rescheduling