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Published on: March 15, 2019
Supplemental O 2 During Recovery Does Not Improve Repeated Maximal Concentric-Eccentric Strength-Endurance
Tobias Dünnwald1, David Morawetz1, Martin Faulhaber2
1Department of Psychology and Sports Medicine, Institute for Sports Medicine, Alpine Medicine and Health Tourism (ISAG), UMIT, Private University for Health Sciences, Medical Informatics and Technology, Hall i.T., Tirol, Austria and Tirol-Kliniken GmbH, Innsbruck, Austria.
Supplemental oxygen during recovery does not improve strength-endurance performance in simulated alpine ski racing. While hyperoxic recovery increased oxygen levels and reduced lactate, it did not enhance power output in hypoxia.
Area of Science:
- Sports Science
- Altitude Training
- Exercise Physiology
Background:
- Alpine ski racing involves repeated maximal exercise bouts at high altitudes.
- Hypoxia during exercise can impair performance and alter acid-base status.
- Understanding recovery strategies is crucial for optimizing training.
Purpose of the Study:
- To evaluate the effects of supplemental oxygen during recovery on repeated maximal strength-endurance performance in hypoxia.
- To assess the impact of hyperoxic recovery on physiological parameters like acid-base status.
Main Methods:
- A randomized, single-blinded crossover study involving 15 elite ski athletes.
- Participants performed 5 sets of 90-second flywheel exercises in a hypoxic chamber (3,500m).
- Recovery periods involved either 100% oxygen (hyperoxic setting) or hypoxic air (non-hyperoxic setting).
Main Results:
- No significant differences in mean power output, concentric peak power, or eccentric peak power between hyperoxic and non-hyperoxic settings.
- Oxygen saturation, partial pressure of oxygen, and oxygen content were higher during recovery in the hyperoxic setting.
- Blood lactate levels were significantly lower in the final recovery phase with hyperoxic recovery.
Conclusions:
- Supplemental oxygen during recovery does not improve repeated maximal strength-endurance performance in a simulated alpine ski racing setting.
- Enhanced oxygenation and reduced lactate during recovery are insufficient to directly impact performance.
- Current recovery strategies with supplemental oxygen may not be beneficial for this type of training.
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