Hypobaric live high-train low does not improve aerobic performance more than live low-train low in cross-country skiers

Scandinavian Journal of Medicine & Science in Sports
P RobachC Lundby

Abstract

Live high-train low (LHTL) using hypobaric hypoxia was previously found to improve sea-level endurance performance in well-trained individuals; however, confirmatory controlled data in athletes are lacking. Here, we test the hypothesis that natural-altitude LHTL improves aerobic performance in cross-country skiers, in conjunction with expansion of total hemoglobin mass (Hbmass , carbon monoxide rebreathing technique) promoted by accelerated erythropoiesis. Following duplicate baseline measurements at sea level over the course of 2 weeks, nineteen Norwegian cross-country skiers (three women, sixteen men, age 20 ± 2 year, maximal oxygen uptake (VO2 max) 69 ± 5 mL/min/kg) were assigned to 26 consecutive nights spent at either low (1035 m, control, n = 8) or moderate altitude (2207 m, daily exposure 16.7 ± 0.5 hours, LHTL, n = 11). All athletes trained together daily at a common location ranging from 550 to 1500 m (21.2% of training time at 550 m, 44.2% at 550-800 m, 16.6% at 800-1100 m, 18.0% at 1100-1500 m). Three test sessions at sea level were performed over the first 3 weeks after intervention. Despite the demonstration of nocturnal hypoxemia at moderate altitude (pulse oximetry), LHTL had no specific effect on serum erythropo...Continue Reading

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Citations

Sep 15, 2018·Exercise and Sport Sciences Reviews·Jacob Bejder, Nikolai Baastrup Nordsborg
Sep 16, 2018·Scandinavian Journal of Medicine & Science in Sports·Sune DandanellCarsten Lundby
Jan 16, 2020·Medicine and Science in Sports and Exercise·Grégoire P Millet, Franck Brocherie
Jan 16, 2020·Medicine and Science in Sports and Exercise·Christoph Siebenmann, Jerome A Dempsey
Apr 11, 2019·Current Sports Medicine Reports·Shaun SutehallYannis Pitsiladis
May 22, 2020·Experimental Physiology·Bent R RønnestadCarsten Lundby
Nov 22, 2019·Frontiers in Physiology·Laura OberholzerCarsten Lundby
Jul 8, 2018·Scandinavian Journal of Medicine & Science in Sports·Paul RobachCarsten Lundby
Jul 8, 2018·Scandinavian Journal of Medicine & Science in Sports·Grégoire P Millet, Franck Brocherie
Oct 13, 2020·Exercise and Sport Sciences Reviews·Marissa N BaranauskasRobert F Chapman

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