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Increased hypoxic dose after training at low altitude with 9h per night at 3000m normobaric hypoxia

Carr, Amelia J., Saunders, Philo U., Vallance, Brent S., Garvican-Lewis, Laura A. and Gore, Christopher J. 2015, Increased hypoxic dose after training at low altitude with 9h per night at 3000m normobaric hypoxia, Journal of sports science and medicine, vol. 14, no. 4, pp. 776-782.

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Title Increased hypoxic dose after training at low altitude with 9h per night at 3000m normobaric hypoxia
Author(s) Carr, Amelia J.ORCID iD for Carr, Amelia J. orcid.org/0000-0003-3855-2540
Saunders, Philo U.
Vallance, Brent S.
Garvican-Lewis, Laura A.
Gore, Christopher J.
Journal name Journal of sports science and medicine
Volume number 14
Issue number 4
Start page 776
End page 782
Total pages 7
Publisher Dept. of Sports Medicine, Medical Faculty of Uludag University
Place of publication Bursa, Turkey
Publication date 2015-11-24
ISSN 1303-2968
Keyword(s) Hypoxia
Hemoglobin mass
Live high
Train low
Athletic performance
Peak oxygen uptake
Summary This study examined effects of low altitude training and a live-high: train-low protocol (combining both natural and simulated modalities) on haemoglobin mass (Hbmass), maximum oxygen consumption (VO2max), time to exhaustion, and submaximal exercise measures. Eighteen elite-level race-walkers were assigned to one of two experimental groups; lowHH (low Hypobaric Hypoxia: continuous exposure to 1380 m for 21 consecutive days; n = 10) or a combined low altitude training and nightly Normobaric Hypoxia (lowHH+NHnight: living and training at 1380 m, plus 9 h.night-1 at a simulated altitude of 3000 m using hypoxic tents; n = 8). A control group (CON; n = 10) lived and trained at 600 m. Measurement of Hbmass, time to exhaustion and VO2max was performed before and after the training intervention. Paired samples t-tests were used to assess absolute and percentage change pre and post-test differences within groups, and differences between groups were assessed using a one-way ANOVA with least significant difference post-hoc testing. Statistical significance was tested at p < 0.05. There was a 3.7% increase in Hbmass in lowHH+NHnight compared with CON (p = 0.02). In comparison to baseline, Hbmass increased by 1.2% (±1.4%) in the lowHH group, 2.6% (±1.8%) in lowHH+NHnight, and there was a decrease of 0.9% (±4.9%) in CON. VO2max increased by ~4% within both experimental conditions but was not significantly greater than the 1% increase in CON. There was a ~9% difference in pre and post-intervention values in time to exhaustion after lowHH+NH-night (p = 0.03) and a ~8% pre to post-intervention difference (p = 0.006) after lowHH only. We recommend low altitude (1380 m) combined with sleeping in altitude tents (3000 m) as one effective alternative to traditional altitude training methods, which can improve Hbmass.
Language eng
Field of Research 1106 Human Movement And Sports Science
0913 Mechanical Engineering
Socio Economic Objective 929999 Health not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Dept. of Sports Medicine, Medical Faculty of Uludag University
Persistent URL http://hdl.handle.net/10536/DRO/DU:30080263

Document type: Journal Article
Collection: School of Exercise and Nutrition Sciences
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