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Game performance and intermittent hypoxic training.

E A Hinckson1, M J Hamlin, M R Wood

  • 1Division of Sport and Recreation, Faculty of Health and Environmental Sciences, AUT University, Auckland, New Zealand. erica.hinckson@aut.ac.nz

British Journal of Sports Medicine
|February 22, 2007
PubMed
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Intermittent normobaric hypoxia did not improve, and may impair, sea-level rugby performance. This altitude simulation method is not recommended for rugby players preparing for games.

Area of Science:

  • Sports Science
  • Exercise Physiology
  • Altitude Training

Background:

  • Live high-train low (LHTL) altitude exposure is a strategy to enhance athletic performance.
  • Intermittent normobaric hypoxia (INH) using devices simulates altitude conditions at sea level.
  • The efficacy of INH for specific sports like rugby remains under investigation.

Purpose of the Study:

  • To investigate the effects of INH on sea-level performance in rugby players.
  • To determine if INH improves or impairs key rugby-specific performance metrics.

Main Methods:

  • Ten male rugby players were randomly assigned to either a hypoxic (10-15% O2) or normoxic (21% O2) group.
  • Participants underwent 14 daily resting exposure sessions over 14 consecutive days using a GO2altitude hypoxicator.

Related Experiment Videos

  • Performance measures including maximum speed, sprint times, and rugby simulation tests were assessed pre- and post-intervention.

    • Main Results:

    • Hypoxic exposure showed trivial (<1.0%) but unclear effects on maximum speed and sprint times.
    • Significant impairments were observed in peak scrum power (15% and 9%) and offensive sprint times (7%) and tackle sprint times (11%) following hypoxic exposure.
    • Normoxic exposure served as a control, with no significant performance changes reported.

    Conclusions:

    • Intermittent normobaric hypoxia, as simulated in this study, does not appear beneficial for sea-level rugby performance.
    • The observed impairments suggest that this method may be detrimental for rugby players preparing for competition.
    • Further research is warranted, but current evidence advises against using normobaric intermittent hypoxic exposure for rugby players aiming to improve sea-level game performance.