Breaking Down RED-S, Low Energy Availability, Fasted Training & Recovery for Body Composition - with Dr Tony Boutagy

🌐 Visit → tonyboutagy.com 📲 Follow us on Instagram → @tonyboutagyThe fitness industry prescribes energy deficits without the framework to know when a deficit becomes harmful. This episode translates the RED-S research into practical application for coaches and individuals working on body composition.In this episode we breakdown the key concepts from recent conversation with Professor Louise Burke.You'll learn:Low energy availability (the exposure) vs RED-S (the syndrome) - why the distinction matters for applicationWhy fat-free mass, not total body mass, is the correct denominator for energy availabilityThe threshold numbers: ~20 cal/kg FFM for fat loss; below 15 cal/kg FFM where adverse consequences are well-documentedWhich systems are affected first - reproductive hormones and bone turnover - and how quickly (research shows within five days at 10 cal/kg FFM, which the transcript notes is not uncommon in physique sport)Why metabolic adaptation is a consequence of RED-S, not a separate phenomenonWhat the evidence does and doesn't support on sex differences in fasted exercise, including the kisspeptin hypothesisWhy fasted training and low energy availability are not the same thingThe 2023 RED-S questionnaire toolkitPrevention: returning to energy balance (30–40 cal/kg FFM) one to two days per weekRecovery: stepwise calorie increase and gastrointestinal adaptationKey insight: Low energy availability is the exposure; RED-S is the syndrome. Fasted training is not the same as low energy availability. These distinctions are foundational to applying this research correctly.Topics: RED-S, low energy availability, fat-free mass, metabolic adaptation, fasted training, kisspeptin, body composition, physique sport, Louise Burke, Stronger With TimeRESOURCES & LINKSDr Tony Boutagy → tonyboutagy.comProfessor Louise Burke - Australian Catholic University → https://www.acu.edu.au/research-and-enterprise/our-research-institutes/mary-mackillop-institute-for-health-research/our-people/louise-burkeIOC RED-S CAT 2 Tool (PDF) → https://stillmed.olympics.com/media/Documents/Beyond-the-Games/Health-and-Wellbeing/2023-IOC-REDS-CAT2.pdfIOC 2023 Consensus Statement on RED-S → https://pubmed.ncbi.nlm.nih.gov/37752005Sports Dietitians Australia → https://www.sportsdietitians.com.auPolar H10 heart rate monitor → https://www.polar.com/en/sensors/h10-heart-rate-sensor