Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
Views
9613
Download
176
from September 2014
 
©Journal of Sports Science and Medicine (2013) 12, 394 - 401

Research article
Comparison of Live High: Train Low Altitude and Intermittent Hypoxic Exposure
Clare E. Humberstone-Gough,1,2 , Philo U. Saunders1,2, Darrell L. Bonetti1, Shaun Stephens1,3, Nicola Bullock1, Judith M. Anson2, Christopher J. Gore1,2,4
Author Information
1 Australian Institute of Sport, Canberra, Australia
2 University of Canberra, Canberra, Australia
3 Australian Institute of Sport, Canberra, Australia
4 School of Education, Flinders University, Adelaide, Australia

Clare E. Humberstone-Gough
✉ Australian Institute of Sport, PO Box 176, Belconnen, ACT 2616, Australia
Email: clare.humberstone@ausport.gov.au
Publish Date
Received: 25-10-2012
Accepted: 19-03-2013
Published (online): 01-09-2013
Share this article
 
 
ABSTRACT

Live High:Train Low (LHTL) altitude training is a popular ergogenic aid amongst athletes. An alternative hypoxia protocol, acute (60-90 min daily) Intermittent Hypoxic Exposure (IHE), has shown potential for improving athletic performance. The aim of this study was to compare directly the effects of LHTL and IHE on the running and blood characteristics of elite triathletes. Changes in total haemoglobin mass (Hbmass), maximal oxygen consumption (VO2max), velocity at VO2max (vVO2max), time to exhaustion (TTE), running economy, maximal blood lactate concentration ([La]) and 3 mM [La] running speed were compared following 17 days of LHTL (240 h of hypoxia), IHE (10.2 h of hypoxia) or Placebo treatment in 24 Australian National Team triathletes (7 female, 17 male). There was a clear 3.2 ± 4.8% (mean ± 90% confidence limits) increase in Hbmass following LHTL compared with Placebo, whereas the corresponding change of -1.4 ± 4.5% in IHE was unclear. Following LHTL, running economy was 2.8 ± 4.4% improved compared to IHE and 3mM [La] running speed was 4.4 ± 4.5% improved compared to Placebo. After IHE, there were no beneficial changes in running economy or 3mM [La] running speed compared to Placebo. There were no clear changes in VO2max, vVO2max and TTE following either method of hypoxia. The clear difference in Hbmass response between LHTL and IHE indicated that the dose of hypoxia in IHE was insufficient to induce accelerated erythropoiesis. Improved running economy and 3mM [La] running speed following LHTL suggested that this method of hypoxic exposure may enhance performance at submaximal running speeds. Overall, there was no evidence to support the use of IHE in elite triathletes.

Key words: Red cell mass, HiLo altitude, blood volume


           Key Points
  • Despite a clear 3.2% increase in haemoglobin mass following 17 days of Live High: Train Low altitude training, no change in maximal aerobic capacity was observed.
  • There were positive changes in running economy and the lactate-speed relationship at submaximal running speeds following Live High: Train Low altitude training.
  • There was no evidence to support the use of daily 60-90 minute Intermittent Hypoxic Exposure in elite triathletes.
 
 
Home Issues About Authors
Contact Current Editorial board Authors instructions
Email alerts In Press Mission For Reviewers
Archive Scope
Supplements Statistics
Most Read Articles
  Most Cited Articles
 
  
 
JSSM | Copyright 2001-2020 | All rights reserved. | LEGAL NOTICES | Publisher

It is forbidden the total or partial reproduction of this web site and the published materials, the treatment of its database, any kind of transition and for any means, either electronic, mechanic or other methods, without the previous written permission of the JSSM.

This work is licensed under a Creative Commons License Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.