Saugy, Jonas J.; Schmitt, Laurent; Hauser, Anna; Constantin, Guillaume; Cejuela-Anta, Roberto; Faiss, Raphael; Wehrlin, Jon Peter; Rosset, Jérémie; Robinson, Neil; Millet, Grégoire P. (2016). Same Performance Changes After Live High-Train Low in Normobaric vs. Hypobaric Hypoxia Frontiers in Physiology, 7, p. 138. Frontiers 10.3389/fphys.2016.00138
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Wehrlin_2016_Same Performance Changes After Live High-Train Low in Normobaric vs. Hypobaric Hypoxia.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (986kB) | Preview |
Purpose: We investigated the changes in physiological and performance parameters after a Live High-Train Low (LHTL) altitude camp in normobaric (NH) or hypobaric hypoxia (HH) to reproduce the actual training practices of endurance athletes using a crossover-designed study. Methods: Well-trained triathletes (n = 16) were split into two groups and completed two 18-day LTHL camps during which they trained at 1100-1200 m and lived at 2250 m (P i O2 = 111.9 ± 0.6 vs. 111.6 ± 0.6 mmHg) under NH (hypoxic chamber; FiO2 18.05 ± 0.03%) or HH (real altitude; barometric pressure 580.2 ± 2.9 mmHg) conditions. The subjects completed the NH and HH camps with a 1-year washout period. Measurements and protocol were identical for both phases of the crossover study. Oxygen saturation (S p O2) was constantly recorded nightly. P i O2 and training loads were matched daily. Blood samples and VO2max were measured before (Pre-) and 1 day after (Post-1) LHTL. A 3-km running-test was performed near sea level before and 1, 7, and 21 days after training camps. Results: Total hypoxic exposure was lower for NH than for HH during LHTL (230 vs. 310 h; P < 0.001). Nocturnal S p O2 was higher in NH than in HH (92.4 ± 1.2 vs. 91.3 ± 1.0%, P < 0.001). VO2max increased to the same extent for NH and HH (4.9 ± 5.6 vs. 3.2 ± 5.1%). No difference was found in hematological parameters. The 3-km run time was significantly faster in both conditions 21 days after LHTL (4.5 ± 5.0 vs. 6.2 ± 6.4% for NH and HH), and no difference between conditions was found at any time. Conclusion: Increases in VO2max and performance enhancement were similar between NH and HH conditions.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
Swiss Federal Institute of Sports Magglingen SFISM > EHSM - Leistungssport > Sportphysiologie Ausdauer |
Name: |
Saugy, Jonas J.; Schmitt, Laurent; Hauser, Anna; Constantin, Guillaume; Cejuela-Anta, Roberto; Faiss, Raphael; Wehrlin, Jon Peter; Rosset, Jérémie; Robinson, Neil and Millet, Grégoire P. |
ISSN: |
1664-042X |
Publisher: |
Frontiers |
Language: |
English |
Submitter: |
Service Account |
Date Deposited: |
24 Feb 2021 12:28 |
Last Modified: |
02 Oct 2021 02:18 |
Publisher DOI: |
10.3389/fphys.2016.00138 |
PubMed ID: |
27148076 |
Uncontrolled Keywords: |
Aerobic exercise Altitude-training camp Crossover study Real altitude Simulated altitude |
ARBOR DOI: |
10.24451/arbor.10940 |
URI: |
https://arbor.bfh.ch/id/eprint/10940 |
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