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A, Rectal and B, esophageal temperatures during a 20-minute recovery period after a cold-water (2°C) immersion with a rectal temperature cooling limit of 37.5°C or 38.6°C. Before the cold-water immersion period, participants were rendered hyperthermic (ie, rectal temperature of 39.5°C) by exercising in the heat. Values are mean ± SE for a group of 10 participants (6 men, 4 women). Abbreviation: EI, end immersion. a Indicates different from the 37.5°C trial (P ≤ .05).
