
Physiology, Training, and INSCYD with Sebastian Weber (part 1) | EP#237
That Triathlon Show
Understanding Testing Protocols and Next Steps in Training
This chapter wraps up the discussion on testing protocols and algorithms, underlining their critical role in understanding physiology for training. It also invites listeners to revisit previous content and prepares them for upcoming episodes while encouraging feedback and showcasing sponsors.
Sebastian Weber is a sports scientist, coach of world class cyclists and endurance athletes, and consultant of multiple world class cycling teams and other endurance sports organisations and federations. He is also the co-founder of the physiological performance software INSCYD. In this two-part interview we discuss recent updates to the INSCYD platform and go deep into physiology and training concepts relevant for optimising endurance performance.
IN THIS EPISODE YOU'LL LEARN ABOUT:
-INSCYD's Power Performance Decoder (PPD) - a tool that can take any combination of data (lactate, VO2, or power only) and calculate VO2max, VLaMax and anaerobic threshold with a high degree of accuracy
-The accuracy of the PPD, and how it compares to traditional lactate or ventilatory testing
-The mechanism of calculating VO2max and VLaMax using power data only
-The original VLaMax testing protocol, and why it's near impossible to "DIY" it
-Best practices for executing the testing protocol
-FatMax: confusions around the metric and what it depends on
-Benchmark values (and realistic expectations) for VO2max and VLaMax for males and females
-How physiological testing on the bike relates (or doesn't) to running and swimming
SHOWNOTES:
https://scientifictriathlon.com/tts237/
THAT TRIATHLON SHOW HOMEPAGE:
SPONSORS:
Precision Hydration - One-size doesn't fit all when it comes to hydration. Take Precision Hydration's FREE sweat test and learn how you should hydrate. Use the discount code THATTRIATHLONSHOW15 to get 15% off your order OR use the code THATTRIATHLONSHOW and get your first box for free.
ROKA - The finest triathlon wetsuits, apparel, equipment, and eyewear on the planet. Trusted by Javier Gómez, Gwen Jorgensen, Flora Duffy, Mario Mola, Lucy Charles and others. Visit roka.com/tts for 20% off your order.
LINKS AND RESOURCES:
- Physiology, Training, and INSCYD with Sebastian Weber (part 2) | EP#238 (available from the 15th of June 2020)
- FTP, VO2max and VLaMax: what triathletes need to know with Sebastian Weber | EP#169
- Cycling movement quality and using the Leomo Type-R to assess it with Sebastian Weber | EP#180
- INSCYD's website
- INSCYD webinars and whitepapers
- INSCYD testing service on scientifictriathlon.com
RATE AND REVIEW:
If you enjoy the show, please help me out by subscribing, rating and reviewing: www.scientifictriathlon.com/rate/
CONTACT:
Want to send feedback, questions or just chat? Email me at mikael@scientifictriathlon.com or connect on Instagram, Facebook, or Twitter.
SPONSORS:
- Precision Fuel & Hydration produce our favourite gels, sports drinks, and electrolyte and carbohydrate products here at That Triathlon Show and Scientific Triathlon. Use the free Fuel & Hydration Planner to get a personalised plan for your carbohydrate, sodium and fluid intake in your next event, and get 15% off your first 2026 order by using the code TTS2026 at checkout.
- Rouvy is hands down the most complete indoor cycling platform for triathletes. Among their thousands of beautiful bike courses from all around the world, all filmed in stunning quality, they have over 75 IRONMAN and IRONMAN 70.3 race courses plus 20+ Challenge Family courses, so you can pre-ride your race from home. Real gradients, real visuals, and real feel! Head to rouvy.com and use the code TTS to get your first month free on top of a 7-day free trial.
- Effortless Swimming produce the best swim goggles for triathletes and open water swimmers. Their NanoClear anti-fog lenses give you clear, fog-free vision that lasts and doesn't wear off. Don't let foggy or leaky goggles ruin another swim. Go to shop.effortlessswimming.com and use the code TTS15 to get 15% off your goggles, and get a free two-month Effortless Swimming course membership.
Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.


