The Rouleur Podcast Live at the Tour: Heat training, altitude and perfect preparation
Jul 4, 2025
Stephen Barrett, the Head Coach of Decathlon AG2R La Mondiale, shares insights on modern altitude and heat training techniques crucial for rider preparation. He discusses the evolution of team strategies, including Felix Gall's ambitious Tour goals. Barrett sheds light on the physiological benefits of heat acclimation and the innovative methods used safely for training. He also touches on the psychological demands of the Tour and how AG2R plans to make an impact in the early stages, setting the stage for exciting race dynamics.
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Unlikely Start Led To Head Coach Role
- Stephen Barrett joined AG2R after presenting research at a conference and being invited by his future boss despite language barriers.
- He met his boss at Lille airport with no shared language and has stayed with the team since 2018.
Altitude Works Through Prolonged Exposure
- Living above ~2,000m forces physiological adaptations like increased red blood cell production.
- Meaningful altitude benefits generally require prolonged exposure of around 21 days.
Adapt Altitude Training With Close Monitoring
- Monitor heart rate, oxygen saturation and sleep metrics closely during acclimation and adapt training daily.
- Use early acclimation (3–4 days) then progressively increase volume based on monitoring.