| Case report of a world class ironman triathlete: EIAH at the ventilatory treshold Auteur(s) : Galy, Olivier Chaouachi, Anis Chamari, Karim Prefaut, Christian Hue, Olivier Chaouachi, Anis Chamari, Karim Auteurs secondaires : Adaptations au Climat Tropical, Exercice et Santé (ACTES) ; Université des Antilles et de la Guyane (UAG) IUFM de l'Université de la Nouvelle-Calédonie, 125 av James Cook, BPX4, 98852 Nouméa Cedex, Nouvelle-Calédonie, France Tunisian Research Laboratory ''Sport Performance Optimisation'' - National Centre of Medicine & Science in Sport, Tunis, Tunisia ; Tunisian Research Laboratory Athlete Health and Performance Research Centre ; Qatar Orthopaedic and Sports Medicine Hospital Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp) ; Institut National de la Santé et de la Recherche Médicale (INSERM) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) CHRU, Hôpital A de Villeneuve, Montpellier, France Éditeur(s) : HAL CCSD International Federation of Sports Medicine Résumé : International audience To study the exercise-induced arterial hypoxaemia (EIAH) kinetics in a world class Ironman triathlete at ventilatory threshold (TH vent), the authors simulated the cycle-run succession (CR, 20 min + 20 min) and a 20-min isolated run (R). Although 'moderate EIAH' was noted during CR, the SpO 2 kinetics of the isolated R reflected 'severe EIAH' from minutes 7 to 15 with a nadir of 85 % SpO 2 that stabilised at 90 % SpO 2 from minute 15 on. The physiological processes involved in these responses are discussed. These data indicate a systematic 'moderate EIAH' in a world class Ironman champion during CR and R at TH vent and a temporary 'severe EIAH' during R, which was attenuated when running was successive to cycling. The physiological significance of this phenomenon remains unclear, however, and further experiments are needed. ISSN: 1528-3356 hal-01152346 https://hal.univ-antilles.fr/hal-01152346 | Partager
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