Episode 130 of the Institute of Performance Nutrition's "We Do Science" podcast! In this episode, I (Laurent Bannock) discuss "Contextualising Fat Oxidation During Exercise" with Ed Maunder PhD(c) (Sports Performance Research Institute New Zealand, Auckland University of Technology, Auckland, New Zealand). Discussion Topics Include: Defining and differentiating "fat oxidation" and "fat burning" Fat as a "fuel" for exercise: storage and metabolism Substrate oxidation (fuel use) during endurance and ultra-endurance exercise Substrate availability and performance: a case for optimising maximal fat oxidation? Testing methods to determine maximal fat oxidation (FatMax) and its value to inform performance nutrition strategies Maximal fat oxidation: what we know, don't know, and what's relevant to elite and recreational endurance athletes Relevance to exercise performance: substrate utilisation during Ironman triathlon case study discussion Key Paper(s) Discussed / Referred to: Contextualising Maximal Fat Oxidation During Exercise: Determinants and Normative Values (Frontiers in Physiology, 2018) Substrate Metabolism During Ironman Triathlon: Different Horses on the Same Courses (Sports Medicine, 2018) Related Podcast Episodes: Episode 128 - "Ketogenic Diet and Athletes" with Fionn McSwiney PhD Episode 123 - "Nutrition and Single-Stage Ultra-Marathon" with Nick Tiller PhD Episode 117 - "Nutrition and Ultramarathon Running" with Dr Ricardo Costa Episode 115 - "Dietary Fat and Elite Endurance Performance" with Dr Jill Leckey Episode 97 - 'LCHF and Performance' with Professor Louise Burke Episode 70 - 'Nutrition and Metabolism for Endurance Sports' with Professor Asker Jeukendrup Episode 62 - 'Fat Oxidation, Exercise & Insulin Sensitivity' with Scott Robinson PhD(c) and Gareth Wallis PhD Check out our other podcasts, publications, events, and professional education programs for current and aspiring sports nutritionists at