Effects of intermittent hypoxic training performed at high hypoxia level on exercise performance in highly trained runners.

Details

Serval ID
serval:BIB_DD1544365B1B
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Effects of intermittent hypoxic training performed at high hypoxia level on exercise performance in highly trained runners.
Journal
Journal of sports sciences
Author(s)
Sanchez AMJ, Borrani F.
ISSN
1466-447X (Electronic)
ISSN-L
0264-0414
Publication state
Published
Issued date
09/2018
Peer-reviewed
Oui
Volume
36
Number
18
Pages
2045-2052
Language
english
Notes
Publication types: Journal Article ; Randomized Controlled Trial
Publication Status: ppublish
Abstract
This study exanimated the effects of intermittent hypoxic training (IHT) conducted at a high level of hypoxia with recovery at ambient air on aerobic/anaerobic capacities at sea level and hematological variations. According to a double-blind randomized design, fifteen highly endurance-trained runners completed a 6-weeks regimented training with 3 sessions per week consisting of intermittent runs (6x work-rest ratio of 5':5') on a treadmill at 80-85% of maximal aerobic speed ([Formula: see text]). Nine athletes (hypoxic group, HG) performed the exercise bouts at FI0 <sub>2</sub>  = 10.6-11.4% while six athletes (normoxic group, NG) exercised at ambient air. Running time to exhaustion at a velocity corresponding to 95% [Formula: see text] significantly increased for HG while no effect was found for NG. Regarding [Formula: see text], no significant effects were found in either training group. In addition, the decline of jumping performances over a 45s-continuous maximal vertical jump test (i.e. anaerobic capacity index) tended to be lower in HG compared to NG. The levels of the studied hematological variables, including erythropoietin and hematocrit, did not significantly change for either HG or NG. These results highlight that our IHT protocol may induce additional effects on aerobic performance without compromising the anaerobic capacity index in highly-trained athletes.
Keywords
Adaptation, Physiological, Altitude, Cross-Over Studies, Double-Blind Method, Erythropoietin/metabolism, Hematocrit, Humans, Hypoxia/physiopathology, Male, Physical Conditioning, Human/methods, Physical Endurance/physiology, Running/physiology, Time Factors, Endurance, altitude, anaerobic performance, erythropoietin, hematocrit
Pubmed
Web of science
Create date
08/02/2018 18:45
Last modification date
21/08/2019 5:34
Usage data