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Journal Articles Life Year : 2022

Contribution of Hypoxic Exercise Testing to Predict High-Altitude Pathology: A Systematic Review

Abstract

Altitude travelers are exposed to high-altitude pathologies, which can be potentially serious. Individual susceptibility varies widely and this makes it difficult to predict who will develop these complications. The assessment of physiological adaptations to exercise performed in hypoxia has been proposed to help predict altitude sickness. The purpose of this review is to evaluate the contribution of hypoxic exercise testing, achieved in normobaric conditions, in the prediction of severe high-altitude pathology. We performed a systematic review using the databases PubMed, Science Direct and Embase in October 2021 to collect studies reporting physiological adaptations under hypoxic exercise testing and its interest in predicting high-altitude pathology. Eight studies were eligible, concerning 3558 patients with a mean age of 46.9 years old, and a simulated mean altitude reaching of 5092 m. 597 patients presented an acute mountain sickness during their altitude travels. Three different protocols of hypoxic exercise testing were used. Acute mountain sickness was defined using Hackett’s score or the Lake Louise score. Ventilatory and cardiac responses to hypoxia, desaturation in hypoxia, cerebral oxygenation, core temperature, variation in body mass index and some perceived sensations were the highlighted variables associated with acute mountain sickness. A decision algorithm based on hypoxic exercise tests was proposed by one team. Hypoxic exercise testing provides promising information to help predict altitude complications. Its interest should be confirmed by different teams.
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hal-04608547 , version 1 (11-06-2024)

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Thomas Georges, Pierre Menu, Camille Le Blanc, Sophie Ferreol, Marc Dauty, et al.. Contribution of Hypoxic Exercise Testing to Predict High-Altitude Pathology: A Systematic Review. Life, 2022, 12 (3), pp.377. ⟨10.3390/life12030377⟩. ⟨hal-04608547⟩
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