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Training-induced increases in sea-level performance are enhanced by acute intermittent hypobaric hypoxia
T Meeuwsen1, I J Hendriksen, M Holewijn
1Research and Development Department, Netherlands Aeromedical Institute, Soesterberg, The Netherlands.
European Journal of Applied Physiology
|May 26, 2001
Summary
Intermittent exposure to simulated altitude in a hypobaric chamber significantly enhanced elite triathletes' aerobic and anaerobic performance. This training method improved maximal oxygen uptake and power output, indicating benefits for endurance athletes.
Area of Science:
- Sports Science
- Exercise Physiology
- Altitude Training
Background:
- Altitude training is a common strategy to enhance athletic performance.
- Intermittent exposure to hypoxia may offer performance benefits without the detriments of prolonged altitude exposure.
Purpose of the Study:
- To investigate the effects of intermittent hypobaric exposure on sea-level performance in elite triathletes.
- To determine if training in a hypobaric chamber improves both aerobic and anaerobic capacity.
Main Methods:
- Elite male triathletes underwent a 10-day training program in a hypobaric chamber.
- One group trained at simulated altitude (2,500 m), while a control group trained at sea-level.
- Performance was assessed using maximal aerobic and anaerobic cycle ergometer tests.
Main Results:
- The hypoxia group showed significant improvements in maximal oxygen uptake (VO2max) by 7.0% and maximal power output (Wmax) by 7.4%.
- Anaerobic performance also improved, with mean and peak power increasing by 5.0% and time-to-peak decreasing by 37.7%.
- No significant changes were observed in the sea-level control group.
Conclusions:
- Intermittent hypobaric training effectively enhances both aerobic and anaerobic energy systems.
- This training modality can lead to significant performance improvements for elite athletes.