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<datestamp>2017-12-21</datestamp>
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<publisher>HAL CCSD</publisher>
<title lang=en>Hydration and Thermoregulation during a Half-Ironman Performed in Tropical Climate</title>
<creator>Baillot, Michelle</creator>
<creator>Hue, Olivier</creator>
<contributor>Adaptations au Climat Tropical, Exercice et Santé (ACTES) ; Université des Antilles et de la Guyane (UAG)</contributor>
<description>International audience</description>
<source>ISSN: 1303-2968</source>
<source>Journal of Sports Science and Medicine</source>
<publisher>University of Uludag</publisher>
<identifier>hal-01136698</identifier>
<identifier>https://hal.univ-antilles.fr/hal-01136698</identifier>
<identifier>https://hal.univ-antilles.fr/hal-01136698/document</identifier>
<identifier>https://hal.univ-antilles.fr/hal-01136698/file/Baillot%2C%20Hue%20-%202015%20-%20Hydration%20and%20Thermoregulation%20during%20a%20Half-Ironman%20Performed%20in%20Tropical%20Climate.pdf</identifier>
<source>https://hal.univ-antilles.fr/hal-01136698</source>
<source>Journal of Sports Science and Medicine, University of Uludag, 2015, pp.263-268</source>
<language>en</language>
<subject lang=en>Aerobic exercise</subject>
<subject lang=en>triathlon</subject>
<subject lang=en>hygrometry</subject>
<subject lang=en>hydration</subject>
<subject>[SDV] Life Sciences [q-bio]</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>The aim of this study was to compare the core temperature (TC) and markers of hydration status in athletes performing a half Ironman triathlon race in hot and humid conditions (27.2 ± 0.5°C, relative humidity was 80 ± 2%). Before and immediately after the 2012 Guadeloupe half Ironman triathlon, body mass and urine osmolarity (mean ± SD) were measured in 19 well-trained male triathletes. TC was measured before and after the race, and at each transition during the event, using an ingestible pill telemetry system. Ambient temperature and heart rate (HR) were measured throughout the race. Mean ± SD performance time was 331 ± 36 minutes and HR was 147 ± 16 beats·min-1. Wet bulb globe temperature (WBGT) averaged 25.4 ± 1.0°C and ocean temperature was 29.5°C. The average TC at the beginning of the race (TC1) was 37.1 ± 0.7°C; it was 37.8 ± 0.9°C after swimming (TC2), 37.8 ± 1.0°C after cycling (TC3), and (TC4) 38.4 ± 0.7°C after running. Body mass significantly declined during the race by 3.7 ± 1.9 kg (4.8 ± 2.4%; p < 0.05), whereas urine osmolarity significantly increased from 491.6 ± 300.6 to 557.9 ± 207.9 mosm·L-1 (p < 0.05). Changes in body mass were not related to finishing TC or urine osmolarity. Ad libitum fluid intake appears applicable to athletes acclimatized to tropical climate, when performing a half Ironman triathlon in a warm and humid environment.</description>
<date>2015-06-01</date>
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