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Dynamic cerebral autoregulation study change in respiratory rate (a) and PETCO2 (b) from PRE to 30 min of head-out water immersion, immediately post-immersion, and 45 min post-immersion in thermoneutral (35 °C) and hot (39 °C) water. B = different from PRE (P ≤ 0.05), * = different between conditions (P ≤ 0.05). n = 18
