Biomarkers predicting the effectiveness of normobaric altitude training

Area of Science:

• Sports Science
• Exercise Physiology
• Biomarker Discovery

Background:

• Individual variability in VO2max response to altitude training is significant.
• Predicting these responses is crucial for optimizing training strategies in elite athletes.

Purpose of the Study:

• To identify blood-based biomarkers predicting VO2max improvement before altitude training.
• To enable individualized training plans for elite athletes.

Main Methods:

• Exploratory intervention study with 15 elite athletes.
• 21-day Live High - Train Low program under normobaric hypoxia.
• VO2max and blood parameters measured pre- and post-intervention.

Main Results:

• Monocyte and neutrophil percentages were strong predictors of VO2max improvement.
• Neutrophil-to-lymphocyte ratio (NLR) and hematocrit also showed predictive value.
• High responders had lower NLR and higher hematocrit compared to low responders.

Conclusions:

• Functional biomarker profiles are relevant for individualized training planning.
• Enables targeted use of altitude training while minimizing health risks.