Metabolic Mastery

Ep. 43 - The Metabolic Glossary: VO2, RER & Thresholds Explained Simply


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If you've ever looked at a metabolic test report and thought, "I should know what this means… but I don't," this episode is for you.

In this Metabolic Mastery episode, Dr. Marc Humbert and Dr. Cameron Garber break down the terminology behind metabolic testing — without hiding behind jargon. From VO2 and VCO2 to RER, ventilatory thresholds, METs, oxygen pulse, and cardiac output, they translate complex physiology into clear, usable concepts.

Using simple analogies like furnaces, fuel types, and engine efficiency, they explain how oxygen is used, how fuel sources shift with intensity, and why thresholds matter for both health and performance.

This episode is your Rosetta Stone for metabolic testing — helping you interpret data with confidence and communicate results clearly to patients and clients.

What You Will Learn
  • What VO2 actually measures (and what VO2 max does not tell you)

  • The difference between VO2 and VO2 max

  • How VCO2 and Respiratory Exchange Ratio (RER) reveal fuel usage

  • Why fat adaptation changes endurance performance

  • The difference between VT1, VT2, aerobic threshold, anaerobic threshold, and lactate threshold

  • Why lactate is not "lactic acid" — and why that matters

  • What minute ventilation, tidal volume, and breathing frequency indicate

  • How oxygen pulse reflects cardiovascular efficiency

  • Why heart rate recovery is a powerful health metric

  • How to use metabolic testing data to design better training programs

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Listen to the Metabolic Mastery Podcast:

Apple Podcast: https://podcasts.apple.com/us/podcast/metabolic-mastery/id1812972674

Spotify: https://open.spotify.com/show/2sgLMFv1Z8DwEz87yUpapI?si=29a177a6c6ca4ed4

YouTube: https://www.youtube.com/@korrmed/podcasts

YouTube Music: https://music.youtube.com/playlist?list=PLVCRWXBDdFo_S0OeaAsPv8xTnfajTLc75&si=d4wVUA0jqajkbukB

Amazon: https://music.amazon.com/podcasts/d76834b7-c11a-485f-8010-32b490d49e57/metabolic-mastery

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Metabolic MasteryBy KORR Medical Technologies

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