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Anaerobic performance at altitude.

J Coudert1

  • 1Laboratory of Physiology and Sports Biology, Faculty of Medicine, Clermont-Ferrand, France.

International Journal of Sports Medicine
|October 1, 1992
PubMed
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High altitude does not impair anaerobic performance up to 5,200 meters for short exposures (under 5 weeks). Muscle mass reduction occurs after prolonged stays, potentially affecting these results.

Area of Science:

  • Exercise Physiology
  • Altitude Physiology
  • Environmental Extremes

Background:

  • Anaerobic metabolism is crucial for high-intensity exercise performance.
  • Assessing anaerobic capacity and maximal anaerobic power (Wmax) is vital in diverse environments.
  • Hypoxia's effects on anaerobic function remain debated, with conflicting data on capacity and Wmax.

Purpose of the Study:

  • To evaluate the impact of high altitude on anaerobic capacity and maximal anaerobic power (Wmax).
  • To synthesize existing research on physiological responses to altitude relevant to anaerobic exercise.
  • To clarify discrepancies in reported findings regarding altitude and anaerobic performance.

Main Methods:

  • Review of studies measuring anaerobic capacity via oxygen deficit/debt and blood lactate.

Related Experiment Videos

  • Analysis of muscle biopsy data (lactate, energy stores, enzyme activity) and lactate flux.
  • Examination of Wmax measurements from force platform jumps and short sprints (7-10s).
  • Inclusion of data from Wingate tests (≥30s) to assess longer anaerobic efforts.

    • Main Results:

    • Muscle biopsy and lactate flux studies generally show no alteration in anaerobic capacity up to 5,500 m.
    • Wmax remains unchanged at altitudes up to 5,200 m for very short, intense exercises (jumps, sprints).
    • Conflicting results exist for longer durations (Wingate tests) due to potential aerobic metabolism interference.

    Conclusions:

    • Anaerobic performance is generally maintained at altitudes up to 5,200 m for exposures under 5 weeks.
    • Prolonged altitude exposure (>5 weeks) may lead to muscle mass decrease, potentially impacting anaerobic capacity.
    • Further research is needed to fully understand the interplay between prolonged hypoxia and anaerobic function.