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[Altitude training--what is true?].

D Boning1

  • 1Institut fur Sportmedizin, Universitatsklinikum Benjamin Franklin, Freie Universitat Berlin.

Deutsche Zeitschrift Fur Sportmedizin
|March 1, 1996
PubMed
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Altitude training may offer a slight performance boost for endurance athletes. However, research shows inconsistent results, suggesting potential benefits are often offset by physiological challenges at higher elevations.

Area of Science:

  • Sports Science
  • Exercise Physiology
  • Environmental Medicine

Background:

  • Altitude training is used to enhance endurance performance by leveraging physiological adaptations to hypoxia.
  • Hypoxia at altitude decreases maximal oxygen uptake, making training more demanding and potentially stimulating greater adaptation.
  • The effectiveness of altitude training depends on maintaining a relative training load (% of VO2max) compared to sea-level training.

Purpose of the Study:

  • To evaluate the specific effects of altitude training on endurance performance and physiological adaptations.
  • To determine if altitude training provides a significant advantage over sea-level training when training loads are normalized.
  • To explore the balance between potential benefits and drawbacks of physiological changes induced by altitude exposure.

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Main Methods:

  • Review of studies comparing altitude training with sea-level training using a relative training load (% of VO2max).
  • Analysis of investigations where athletes trained in hypoxia but lived in normoxia.
  • Examination of various physiological responses to altitude, including respiratory, cardiovascular, and metabolic changes.

Main Results:

  • Only 3 out of 10 studies using a relative load design showed significant improvements in maximal performance, VO2max, or endurance.
  • Two studies with a hypoxia-training/normoxia-living design reported improvements in some groups.
  • Physiological adaptations at altitude present a complex interplay of potentially beneficial and detrimental factors for training success.

Conclusions:

  • A specific altitude training effect on performance capacity may exist but appears to be small.
  • Negative influences, such as reduced muscular metabolic intensity, can counteract potential altitude-induced benefits.
  • The overall impact of altitude training is influenced by a range of physiological adjustments, including changes in ventilation, oxygen transport, and substrate utilization.