alexa Training-induced increases in sea-level performance are enhanced by acute intermittent hypobaric hypoxia.


Journal of Pulmonary & Respiratory Medicine

Author(s): Meeuwsen T, Hendriksen IJ, Holewijn M

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Abstract The goal of this study was to investigate to what extent intermittent exposure to altitude in a hypobaric chamber can improve performance at sea-level. Over a 10-day period, elite male triathletes trained for 2 h each day on a cycle ergometer placed in a hypobaric chamber. Training intensity was 60-70\% of the heart rate reserve. Eight subjects trained at a simulated altitude of 2.500 m (hypoxia group), the other eight remained at sea-level (sea-level group). Baseline measurements were done on a cycle ergometer at sea-level, which included an incremental test until exhaustion and a Wingate Anaerobic Test. Nine days after training in hypoxia, significant increases were seen in all important parameters of the maximal aerobic as well as the anaerobic test. A significant increase of 7.0\% was seen in the mean maximal oxygen uptake per kilogram body weight (VO2max), and the mean maximal power output per kilogram body weight (Wmax) increased significantly by 7.4\%. The mean values of both mean power per kilogram body weight and peak power per kilogram body weight increased significantly by 5.0\%, and the time-to-peak decreased significantly by 37.7\%. In the sea-level group, no significant changes were seen in the abovementioned parameters of both the maximal aerobic and the maximal anaerobic test at the second post-test. The results of this study indicate that intermittent hypobaric training can improve both the aerobic and the anaerobic energy-supply systems. This article was published in Eur J Appl Physiol and referenced in Journal of Pulmonary & Respiratory Medicine

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