Body temperatures during three long-distance polar swims in water of 0–3 °C

1. We report body temperature responses in a single individual to 3 swims of 1000 m or longer in ice-cold water (0–3 °C) during which he swam the normal crawl stroke with his face in the water whilst wearing only a swimming costume, swimming cap and goggles. 2. He began each swim with a rectal tempe...

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Bibliographic Details
Published in:Journal of thermal biology Vol. 34; no. 1; pp. 23 - 31
Main Authors: Noakes, T.D., Dugas, J.P., Dugas, L.R., Tucker, R., Oksa, J., Dunn, J., van der Merwe, B.S., Dirker, J.A., Porvari, K., Smolander, J.
Format: Journal Article
Language:English
Published: Elsevier Ltd 2009
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Summary:1. We report body temperature responses in a single individual to 3 swims of 1000 m or longer in ice-cold water (0–3 °C) during which he swam the normal crawl stroke with his face in the water whilst wearing only a swimming costume, swimming cap and goggles. 2. He began each swim with a rectal temperature between 37.8 and 38.4 °C, which he maintained above 37.5 °C for more than 20 min. Following a swim of 1.6 km in water of 2–3 °C his lower limb muscle temperature fell to below 32 °C. 3. There was a marked post-swim after-drop in his rectal temperature reaching 33.6 °C 13 min after the 1.6 km swim in water of 2–3 °C. 4. Re-warming in a hot shower usually returned his core temperature to 37 °C within 70–90 min after the swims. Re-warming for 70 min after the 1.6 km swim failed to increase his lower limb muscle temperature. 5. This study may have identified the limiting durations for swimming at 0–3 °C without protective clothing in this specific individual following an intensive programme of acclimatized to such cold water.
ISSN:0306-4565
1879-0992
DOI:10.1016/j.jtherbio.2008.09.005