While Canadians are used to severe winter weather, 9 of the 10 warmest years on record in Canada have occurred in the last 25 years. This has real world implications for outdoor sport events. For example, even the best triathletes in the world struggled with the extreme heat in Edmonton in July of last year, with Paula Findlay and Kristian Blummenfelt forced to reduce their intensity in the later stages of the race, costing each of them the win (Professional Triathlon Organization July 24, 2022).

This SIRCuit article summarizes the latest research on exercising in heat, as well as offers strategies for athletes, coaches and sport organizations. Sign up for the SIRCuit and receive the next edition right to your inbox.