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Published Online: 1 September 2016

Sleep Disordered Breathing During Live High-Train Low in Normobaric Versus Hypobaric Hypoxia

Publication: High Altitude Medicine & Biology
Volume 17, Issue Number 3

Abstract

Saugy, Jonas J., Laurent Schmitt, Sibylle Fallet, Raphael Faiss, Jean-Marc Vesin, Mattia Bertschi, Raphaël Heinzer, and Grégoire P. Millet. Sleep disordered breathing during live high-train low in normobaric versus hypobaric hypoxia. High Alt Med Biol. 17:233–238, 2016.—The present study aimed to compare sleep disordered breathing during live high-train low (LHTL) altitude camp using normobaric hypoxia (NH) and hypobaric hypoxia (HH). Sixteen highly trained triathletes completed two 18-day LHTL camps in a crossover designed study. They trained at 1100–1200 m while they slept either in NH at a simulated altitude of 2250 m or in HH. Breathing frequency and oxygen saturation (SpO2) were recorded continuously during all nights and oxygen desaturation index (ODI 3%) calculated. Breathing frequency was lower for NH than HH during the camps (14.6 ± 3.1 breath × min−1 vs. 17.2 ± 3.4 breath × min−1, p < 0.001). SpO2 was lower for HH than NH (90.8 ± 0.3 vs. 91.9 ± 0.2, p < 0.001) and ODI 3% was higher for HH than NH (15.1 ± 3.5 vs. 9.9 ± 1.6, p < 0.001). Sleep in moderate HH is more altered than in NH during a LHTL camp.

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Published In

cover image High Altitude Medicine & Biology
High Altitude Medicine & Biology
Volume 17Issue Number 3September 2016
Pages: 233 - 238
PubMed: 27410774

History

Published in print: September 2016
Published online: 1 September 2016
Published ahead of print: 13 July 2016
Accepted: 12 May 2016
Received: 24 April 2016

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Jonas J. Saugy
Faculty of Biology and Medicine, ISSUL, Institute of Sport Sciences, University of Lausanne, Switzerland.
Department of Physiology, Faculty of Biology and Medicine, University of Lausanne, Switzerland.
Laurent Schmitt
National School of Mountain Sports/National Ski-Nordic Centre, Prémanon, France.
Sibylle Fallet
Institute of Electrical Engineering, Swiss Federal Institute of Technology, Lausanne, Switzerland.
Raphael Faiss
Faculty of Biology and Medicine, ISSUL, Institute of Sport Sciences, University of Lausanne, Switzerland.
Jean-Marc Vesin
Institute of Electrical Engineering, Swiss Federal Institute of Technology, Lausanne, Switzerland.
Mattia Bertschi
Swiss Center for Electronics and Microtechnology, CSEM, Neuchâtel, Switzerland.
Raphaël Heinzer
Center for Investigation and Research in Sleep, CHUV, Lausanne, Switzerland.
Grégoire P. Millet
Faculty of Biology and Medicine, ISSUL, Institute of Sport Sciences, University of Lausanne, Switzerland.
Department of Physiology, Faculty of Biology and Medicine, University of Lausanne, Switzerland.

Notes

Address correspondence to:Grégoire P. Millet, PhDFaculty of Biology and MedicineISSUL, Institute of Sport SciencesUniversity of LausanneGeopolis, Quartier MoulineLausanne 1015Switzerland
E-mail: [email protected]

Author Disclosure Statement

No competing financial interests exist.

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