Key result
Endurance athletes with severe VO2max loss in moderate hypoxia (-18%) had reduced maximal a-vO2 difference (-14%), while those with moderate loss (-7%) maintained a-vO2 difference (+1%).
Why the study?
Does moderate hypoxia impair maximal aerobic power through central or peripheral factors in endurance athletes?
Population
15 endurance-trained athletes
Comparison
Maximal cycle incremental tests in moderate… vs Maximal cycle incremental tests in normoxia
Authors
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Central factors limit VO2max in moderate hypoxia; leaves open mitochondrial role in endurance athletes.
Observational (n=15)
Does moderate hypoxia impair maximal aerobic power through central or peripheral factors in endurance athletes?
In endurance athletes, tolerance to moderate hypoxia during maximal exercise may be limited by peripheral factors, specifically qualitative aspects of mitochondrial function.
Ponsot et al. (2009) conducted an observational in Healthy endurance-trained athletes (n=15). Moderate hypoxia (FiO2 = 14.5%) vs. Normoxia was evaluated on Maximal oxygen uptake (Vo2max). Endurance athletes with severe VO2max loss in moderate hypoxia (-18%) had reduced maximal a-vO2 difference (-14%), while those with moderate loss (-7%) maintained a-vO2 difference (+1%).
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