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Altitude acclimatization, training and performance.

H J Green1

  • 1Department of Kinesiology, University of Waterloo, Ontario.

Journal of Science and Medicine in Sport
|December 2, 2000
PubMed
Summary
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Altitude exposure reduces blood oxygen, prompting acclimatization like increased hemoglobin. However, altitude training

Area of Science:

  • Sports Science
  • Human Physiology
  • Altitude Training

Background:

  • Exposure to reduced oxygen at altitude triggers physiological acclimatization responses.
  • A key adaptation is increased hemoglobin (Hb) concentration, aiming to maintain aerobic metabolism.
  • Altitude training is proposed to enhance sea-level aerobic performance, but evidence is limited.

Purpose of the Study:

  • To critically evaluate the efficacy of altitude exposure for improving athletic performance.
  • To identify factors limiting the benefits of altitude training.
  • To explore potential counterproductive adaptations to altitude acclimatization.

Main Methods:

  • Review of existing research on altitude exposure and athletic performance.
  • Analysis of experimental designs and training strategies in altitude studies.

Related Experiment Videos

  • Investigation of physiological changes at both systemic and cellular levels.

    • Main Results:

    • The benefits of altitude training for elite sea-level performance remain largely unproven.
    • Inconsistent findings are attributed to poor study designs, varied altitude protocols, and significant individual variability.
    • Altitude acclimatization may induce muscle cell alterations, such as down-regulated cation cycling, potentially impairing performance.

    Conclusions:

    • The purported performance benefits of altitude exposure require further rigorous investigation.
    • Understanding inter-individual responses and cellular adaptations is crucial for optimizing altitude training.
    • Potential negative impacts on muscle function warrant consideration in training strategies.