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LACTATE

🎙️ Lactate, the podcast that deciphers science to improve your performance. Endurance, nutrition, training, recovery – each episode gives you science-based insights to understand, improve, and perform. Voices generated by artificial intelligence from the scientific report produced by the Lactate team.
💬 Got a question or feedback? Write us at: lactatesports@gmail.com
☕ Buy a Gel Caf for Lactate to support the work:⁠ https://ko-fi.com/lactate⁠⁠⁠⁠

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  • S2 · E87
    Friday · 20 min

    Episode 87 [SCIENCE VS MYTH #11] The Fat-Burning Zone: Cardio's Biggest Myth? 🔥

    Episode 87 [SCIENCE VS MYTH #11] The Fat-Burning Zone: Cardio's Biggest Myth? 🔥💬 Got a question or feedback? Write us at: lactatesports@gmail.com☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactateSummary: The "fat-burning zone" displayed on every treadmill promises optimal fat loss, but is it a physiological fallacy built on flawed math? This episode dismantles the commercial myth by diving deep into the science of substrate oxidation. You'll learn the critical difference between burning a high *percentage* of fat versus burning the highest *absolute amount* of fat—a concept defined by your unique Maximal Fat Oxidation (MFO) point, or FATmax. We explore the "Crossover Concept," revealing the precise biochemical bottlenecks, like CPT-1 inhibition, that shut down fat metabolism at high intensities. Discover why the infamous "220-minus-age" formula is scientifically invalid and why High-Intensity Interval Training (HIIT) consistently leads to greater fat loss than steady-state cardio in the supposed fat-burning zone. Whether you're an elite athlete trying to spare glycogen or a time-crunched amateur aiming for body composition changes, this guide provides actionable protocols to train smarter, moving beyond the myth of the fat-burning zone and toward true metabolic efficiency. Understanding the real fat-burning zone is key to unlocking your potential.Keywords: fat-burning zone, maximal fat oxidation, fatmax, crossover concept, hiit, epoc, substrate oxidation, exercise physiology, metabolic flexibility🎙️ Lactate, the podcast that deciphers science to improve your performance.Key references :Romijn, J. A., Coyle, E. F., Sidossis, L. S., Gastaldelli, A., Horowitz, J. F., Endert, E., & Wolfe, R. R. (1993). Regulation of endogenous fat and carbohydrate metabolism in relation to exercise intensity and duration. *American Journal of Physiology-Endocrinology and Metabolism*, 265(3), E380-E391. https://www.researchgate.net/publication/14985327_Regulation_of_endogenous_fat_and_carbohydrate_metabolism_in_relation_to_exercise_intensity_and_durationBrooks, G. A., & Mercier, J. (1994). Balance of carbohydrate and lipid utilization during exercise: the 'crossover' concept. *Journal of Applied Physiology*, 76(6), 2253-2261. https://www.researchgate.net/publication/15270081_Balance_of_carbohydrate_and_lipid_utilization_during_exercise_The_'crossover'_conceptAchten, J., Gleeson, M., & Jeukendrup, A. E. (2002). Determination of the exercise intensity that elicits maximal fat oxidation. *Medicine & Science in Sports & Exercise*, 34(1), 92-97. https://www.researchgate.net/publication/9026407_Maximal_Fat_Oxidation_During_Exercise_in_Trained_MenVenables, M. C., Achten, J., & Jeukendrup, A. E. (2005). Determinants of fat oxidation during exercise in healthy men and women: a cross-sectional study. *Journal of Applied Physiology*, 98(1), 160-167. https://pubmed.ncbi.nlm.nih.gov/15333616/Viana, R. B., Naves, J. P. A., Coswig, V. S., de Lira, C. A. B., Steele, J., Fisher, J. P., & Gentil, P. (2019). Is interval training the magic bullet for fat loss? A systematic review and meta-analysis comparing moderate-intensity continuous training with high-intensity interval training (HIIT). *British Journal of Sports Medicine*, 53(10), 655-664. https://www.researchgate.net/publication/331126194_Is_interval_training_the_magic_bullet_for_fat_loss_A_systematic_review_and_meta-analysis_comparing_moderate-intensity_continuous_training_with_high-intensity_interval_training_HIITVoices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S2 · E86
    September 15 · 20 min

    Episode 86 [DECODED] Running Power: The Metric That Changes Everything? ⚡

    Episode 86 [DECODED] Running Power: The Metric That Changes Everything? ⚡💬 Got a question or feedback? Write us at: lactatesports@gmail.com☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactateSummary:Pace fails on hills and heart rate lags behind your effort. This episode decodes running power, the metric designed to provide an instantaneous, unified measure of your true intensity. We dissect the core technology: running power isn't a direct measurement like in cycling, but a sophisticated algorithmic proxy for your metabolic cost, calculated by IMU sensors in your watch or foot pod. You'll learn the critical difference between the "Gross Power" approach of Garmin and Polar, which includes the free elastic energy return from your tendons, and the "Net Power" approach of Stryd and Apple, which attempts to isolate pure muscular work to better correlate with your VO₂. We then provide a complete blueprint to integrate running power into your training: how to perform the scientifically validated 9/3-minute field test to find your Critical Power (CP)—a direct proxy for your lab-tested RCP—and how to structure your training using precise power zones. Finally, we expose the two "war zones" where the algorithms currently fail: the "super shoe disconnect" that breaks the link between power and metabolic cost, and soft surfaces like sand or mud where power readings become completely invalid.Keywords:running power, critical power, imu, vo₂, lactate threshold, stryd, garmin, training zones, running economy🎙️ Lactate, the podcast that deciphers science to improve your performance.Key references :Ruiz-Alias et al. (2022). 9/3-Minute Running Critical Power Test: Mechanical Threshold Location With Respect to Ventilatory Thresholds and Maximum Oxygen Uptake.van Rassel et al. (2023). Is Running Power a Useful Metric? Quantifying Training Intensity and Aerobic Fitness Using Stryd Running Power Near the Maximal Lactate Steady State.Cerezuela-Espejo et al. (2021). Are we ready to measure running power? Repeatability and concurrent validity of five commercial technologies.The Ability of Stryd Footpod Metrics to Reflect Changes in Metabolic, https://www.researchgate.net/publication/385981907_The_Ability_of_Stryd_Footpod_Metrics_to_Reflect_Changes_in_Metabolic_Power_Between_Running_Shoe_TypesContextualisation of running power: a systematic review - efsupit.ro, https://efsupit.ro/images/stories/iulie2020/Art%20276.pdfVoices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S2 · E85
    September 11 · 24 min

    Episode 85 [INCREDIBLE] Will the 2-Hour Marathon Barrier Finally Fall? ⏱️

    Episode 85 [INCREDIBLE] Will the 2-Hour Marathon Barrier Finally Fall? ⏱️💬 Got a question or feedback? Write us at: lactatesports@gmail.com☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactateSummary: The quest to break the official 2-hour marathon barrier is no longer a biological question, but an engineering puzzle. This episode dissects the absolute limits of human endurance, revealing the brutal physiological cost of maintaining a 21.1 km/h pace: a sustained oxygen uptake of 67 ml/kg/min at 94% of VO₂max. We go beyond the classic triad of endurance to explore the fourth dimension: physiological durability. Discover how running economy degrades over two hours, how a metabolic shift to fat oxidation can increase oxygen cost by 30%, and how computational fluid dynamics (CFD) prove that "swordfish" drafting formations can save over four minutes. We'll also analyze the technological arms race, from World Athletics' 40mm stack height rule to the disposable, sub-140-gram hyper-shoes changing the game. Finally, we translate this elite science into your training. Learn why a negative split strategy is almost always superior, how you can leverage drafting in your own races, and why building musculoskeletal durability is far more critical for marathon success than chasing a higher VO₂max. This is the definitive blueprint for the sub 2-hour marathon.Keywords: 2-hour marathon, marathon, running, endurance, vo₂max, running economy, aerodynamics, kelvin kiptum, hyper-shoes🎙️ Lactate, the podcast that deciphers science to improve your performance.Key references :Jones, A. M., Kirby, B. S., Clark, I. E., Rice, H. M., Fulkerson, E., Wylie, L. J., ... & Joyner, M. J. (2021). Physiological demands of running at 2-hour marathon race pace. Journal of Applied Physiology, 130(2), 369-379. https://doi.org/10.1152/japplphysiol.00647.2020Angus, S. D. (2019). A Statistical Timetable for the Sub-2-Hour Marathon. Medicine & Science in Sports & Exercise, 51(7), 1460-1466. https://doi.org/10.1249/MSS.0000000000001928Polidori, G., Legrand, F., Bogard, F., Madaci, F., & Beaumont, F. (2020). Numerical Investigation of the impact of Kenenisa Bekele's cooperative drafting strategy on its running power during the 2019 Berlin marathon. Journal of Biomechanics, 107, 109854. https://doi.org/10.1016/j.jbiomech.2020.109854Joyner, M. J. (1991). Modeling: optimal marathon performance on the basis of physiological factors. Journal of Applied Physiology, 70(2), 683-687. https://doi.org/10.1152/jappl.1991.70.2.683Blocken, B., van Druenen, T., Toparlar, Y., & Andrianne, T. (2020). Wind tunnel evaluation of novel drafting formations for an elite marathon runner. Journal of Wind Engineering and Industrial Aerodynamics.Voices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S2 · E84
    September 8 · 26 min

    Episode 84 [DECODED] Zone 2: Are You Doing Too Much, or Not Enough? 🎯

    Episode 84 [DECODED] Zone 2: Are You Doing Too Much, or Not Enough? 🎯💬 Got a question or feedback? Write us at: lactatesports@gmail.com☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactateSummary: For years, Zone 2 training was hailed as the ultimate secret for endurance, metabolic health, and longevity. But a 2025 scientific backlash has shattered this dogma, revealing a critical paradox: what works for elite athletes training 20 hours a week may be holding you back. This episode decodes the new science, explaining how high-volume Zone 2 training uniquely drives eccentric cardiac hypertrophy—mechanically stretching the heart's chambers for a larger stroke volume—and upregulates the FAT/CD36 translocase, the true bottleneck for fat oxidation. However, we reveal why for time-crunched individuals (<5 hours/week), high-intensity training (HIIT) is a vastly superior stimulus for improving mitochondrial respiratory function by more potently activating the PGC-1α signaling cascade. Learn why your smartwatch's HR formulas are likely inaccurate, why the simple "Talk Test" is still a gold standard, and how to structure your training to get the most adaptation from every minute you invest, challenging the myth of Zone 2 training's absolute supremacy.Keywords: zone 2 training, polarized training, eccentric hypertrophy, mitochondrial biogenesis, fatmax, hiit, storoschuk, continuous lactate monitor, endurance🎙️ Lactate, the podcast that deciphers science to improve your performance.Key references :Storoschuk, B. D., Gibala, M. J., & Gurd, B. J. (2025). *Much Ado About Zone 2: A Narrative Review Assessing the Efficacy of Zone 2 Training for Improving Mitochondrial Capacity and Cardiorespiratory Fitness in the General Population*. https://www.researchgate.net/publication/393016714_Much_Ado_About_Zone_2_A_Narrative_Review_Assessing_the_Efficacy_of_Zone_2_Training_for_Improving_Mitochondrial_Capacity_and_Cardiorespiratory_Fitness_in_the_General_PopulationGranata, C., Jamnick, N. A., & Bishop, D. J. (2016). *Training-Induced Changes in Mitochondrial Content and Respiration are Rapidly Reversed by a Reduction in Training Volume in Human Skeletal Muscle*. Victoria University Institutional Repository. https://vuir.vu.edu.au/37369/1/CGranata_MS%20-%20revision%20CLEAN%20(002).pdfMeixner, F., et al. (2025). Zone 2 Intensity: A Critical Comparison of Individual Variability in Different Submaximal Exercise Intensity Boundaries. *Sports Medicine - Open, 11*(1). https://pmc.ncbi.nlm.nih.gov/articles/PMC11986187/McFarlan, J. T., et al. (2012). In Vivo, Fatty Acid Translocase (CD36) Critically Regulates Skeletal Muscle Fuel Selection, Exercise Performance, and Training-Induced Adaptation of Fuel Metabolism. *Journal of Biological Chemistry, 287*(27), 23055–23063. https://pmc.ncbi.nlm.nih.gov/articles/PMC3390626/Meeusen, R., et al. (2013). Prevention, diagnosis, and treatment of the overtraining syndrome: joint consensus statement of the European College of Sport Science and the American College of Sports Medicine. *Medicine & Science in Sports & Exercise, 45*(1), 186-205. https://pubmed.ncbi.nlm.nih.gov/23247672/Voices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S2 · E83
    September 4 · 18 min

    Episode 83 [SCIENCE VS MYTH #10] What Lactate Really Does to Your Muscles 💪

    Episode 83 [SCIENCE VS MYTH #10] What Lactate Really Does to Your Muscles 💪💬 Got a question or feedback? Write us at: lactatesports@gmail.com☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactateSummary:For a century, athletes have cursed lactate as the cause of muscle burn and fatigue. This episode dismantles that dogma with a deep dive into the nanophysiology of performance. You will learn that the real culprits of fatigue are inorganic phosphate and ADP from ATP hydrolysis, and that lactate production actually acts as a crucial buffer against catastrophic acidosis. We explore how specialized MCT1 and MCT4 transporters shuttle lactate between cells, how your genetics (the A1470T polymorphism) dictate your clearance capacity, and how the brain uses the Astrocyte-Neuron Lactate Shuttle to fuel intense cognitive work. Discover how lactate functions as a systemic hormone—a "lactormone"—via the GPR81 receptor, and as a direct epigenetic modifier through the revolutionary discovery of histone lactylation, which rewires your genes for long-term adaptation. Finally, we translate this science into a practical blueprint: why active recovery is non-negotiable, how to use the D-max method to precisely identify your Maximal Lactate Steady State (MLSS), and how the coming wave of continuous biosensors will change training forever.Keywords:lactate, mct1, histone lactylation, mlss, d-max method, astrocyte-neuron lactate shuttle, gpr81, active recovery, exercise physiology, thermodynamics of fatigue🎙️ Lactate, the podcast that deciphers science to improve your performance.Key references :*Histone lactylation links metabolism and gene regulation*. (2019). ResearchGate. https://www.researchgate.net/publication/336768412_Histone_lactylation_links_metabolism_and_gene_regulation*The lactate shuttle during exercise and recovery*. (1986). ResearchGate. https://www.researchgate.net/publication/19639028_The_lactate_shuttle_during_exercise_and_recovery*Brain energy homeostasis: the evolution of the astrocyte-neuron lactate shuttle hypothesis*. (1994). PMC. https://pmc.ncbi.nlm.nih.gov/articles/PMC11694005/*Effect of MCT1 A1470T Polymorphism on Lactate and Potassium Concentrations After Caffeine Ingestion During Acute Resistance Exercise*. (2024). MDPI. https://www.mdpi.com/2072-6643/16/24/4396*Lactate Threshold (D-Max Method) and Maximal Lactate Steady State in Cyclists*. (2009). Journal of Human Kinetics. https://johk.pl/wp-content/uploads/2023/02/10.2478_v10078-09-0006-5.pdf*Lactate as a Signaling Molecule That Regulates Exercise-Induced Adaptations*. (2016). MDPI. https://www.mdpi.com/2079-7737/5/4/38Voices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S2 · E82
    September 2 · 24 min

    Episode 82 [SEASON 2] What We Learned in S1 (And Why S2 Changes Everything) 🚀

    Episode 82 [SEASON 2] What We Learned in S1 (And Why S2 Changes Everything) 🚀💬 Got a question or feedback? Write us at: lactatesports@gmail.com☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactateSummary: What if the foundational principles of your endurance training were based on outdated science? This episode launches Season 2 by dismantling the core myths that hold athletes back. We dive deep into modern sports physiology to reveal the truth. Discover why lactate isn't a toxic waste product but a high-performance fuel and a powerful signaling molecule that boosts brain function via the GPR81 receptor. We'll show you the evidence (Lauersen et al., 2014) that static stretching doesn't prevent injuries—strength training does—and can even decrease your power output. We also shatter the myth of the 30-minute "anabolic window," explaining why total daily protein intake (1.6-2.2 g/kg) is the real driver of recovery, as confirmed by extensive meta-analyses. Finally, we explore why running strengthens, not destroys, your knee cartilage through a process called mechanotransduction. This new understanding of sports physiology provides a clear roadmap: stop fearing lactate and start training to use it better, replace pre-workout static stretches with dynamic movements, focus on your 24-hour nutrition instead of a narrow window, and run with the confidence that you're building more resilient joints. This is the new paradigm of evidence-based sports physiology.Keywords: sports physiology, training myths, endurance training, lactate, stretching, anabolic window, hrv, recovery, running science🎙️ Lactate, the podcast that deciphers science to improve your performance.Key references :Sun, S., Li, H., Chen, J., & Qian, Q. (2021). Lactate: a multifunctional signaling molecule. *Frontiers in Physiology*, 12, 708353. https://pmc.ncbi.nlm.nih.gov/articles/PMC8225492/Robergs, R. A., Ghiasvand, F., & Parker, D. (2004). Biochemistry of exercise-induced metabolic acidosis. *American Journal of Physiology-Regulatory, Integrative and Comparative Physiology*, 287(3), R502-R516. https://oamonitor.ireland.openaire.eu/national/search/publication?pid=10.1152%2Fajpregu.00114.2004Lauersen, N. B., Bertelsen, D. M., & Andersen, L. B. (2014). The effectiveness of exercise interventions to prevent sports injuries: a systematic review and meta-analysis of randomised controlled trials. *British Journal of Sports Medicine*, 48(11), 871-877. https://bjsm.bmj.com/content/bjsports/48/11/871.full.pdfKay, A. D., & Blazevich, A. J. (2012). Effect of acute static stretch on maximal muscle performance: a systematic review. *Medicine & Science in Sports & Exercise*, 44(1), 154-164. https://pubmed.ncbi.nlm.nih.gov/21659901/Morton, R. W., Murphy, K. T., McKellar, S. R., Schoenfeld, B. J., Henselmans, M., Helms, E., ... & Phillips, S. M. (2018). A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults. *British Journal of Sports Medicine*, 52(6), 376-384. https://pubmed.ncbi.nlm.nih.gov/28698222/Voices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S1 · E81
    July 25 · 20 min

    Episode 81 Blueprint 2027: The Future of Science and Extreme Athletic Optimization 🚀 

    Episode 81 Blueprint 2027: The Future of Science and Extreme Athletic Optimization 🚀 💬 Got a question or feedback? Write us at: lactatesports@gmail.com ☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactate Summary: What happens when continuous biosensors, microbiome genetic manipulation, and extreme chemical enhancement merge to break the ultimate barriers of human biology?[cite: 4]. This final special episode projects into the year 2027 to explore the next revolution in sports performance[cite: 4]. We explore the shift from episodic testing to continuous transdermal multi-analyte sensors that measure lactate and ketones in real-time, feeding predictive AI "Digital Twins"[cite: 4]. We dive into nano-enhanced hydration and bio-engineered probiotics designed to bypass our natural carbohydrate absorption limits of 90-120g/h without gastrointestinal distress[cite: 4]. Finally, we tackle the ethical vertigo of myostatin inhibitors and gene therapy, analyzing the ideology behind the "Enhanced Games" and Bryan Johnson's Blueprint[cite: 4]. Is sports becoming a mere demonstration of biomedical engineering?[cite: 4]. We provide actionable advice to navigate this hyper-technological era without losing your interoceptive instinct or risking orthosomnia[cite: 4]. Keywords: future of sports, continuous lactate monitor, digital twins, nano-hydration, microbiome, gene doping, myostatin inhibitors, Enhanced Games, sports ethics, transhumanism 🎙️ Lactate, the podcast that deciphers science to improve your performance. Key references : The Future of Wellness Report. (2026). An Over-Optimization Backlash and Revenge of the Human: Orthosomnia and the Psychological Demands of Data Obsession. World Bio Market Insights. (2025). Bioeconomy in 2025: Engineered Living Materials (ELMs) and Microbiome Innovations in NextSkins. Horizon Europe. International Testing Agency (ITA) & WADA. (2026). The 2026 Prohibited List: Major Modifications and Explanatory Notes on Cell and Gene Doping. D'Souza, A., & Enhanced Games. (2025). Terms of Service & The Enhanced Games Philosophy. Enhanced Games Official Publications. Regeneron Pharmaceuticals. (2025). Phase 3 Clinical Trial Results: Myostatin/Activin Inhibitors and Energy Regulation Mimetics. ClinicalTrials.gov. Voices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S1 · E80
    July 24 · 16 min

    Episode 80 The Lactate Awards: Debunking the 5 Biggest Sports Physiology Myths 🏆 

    Episode 80 The Lactate Awards: Debunking the 5 Biggest Sports Physiology Myths 🏆 💬 Got a question or feedback? Write us at: lactatesports@gmail.com ☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactate Summary: It is time to clean house before diving into new training cycles[cite: 3]. This special season finale awards the "Lactate Awards" to the five biggest sports physiology myths completely shattered by modern science[cite: 3]. We dismantle the "30-minute anabolic window," proving that total 24-hour protein intake and quality matter far more than rushing a post-workout shake[cite: 3]. You'll discover why pre-workout static stretching actually decreases your functional stiffness and ruins your running economy[cite: 3]. Surprised to hear running destroys your knees? Epidemiological data shows recreational running is actually chondro-protective, feeding your cartilage rather than wearing it down[cite: 3]. We also challenge the "No Pain, No Gain" mentality, explaining why severe DOMS indicates structural tissue damage, not functional adaptation or growth[cite: 3]. Finally, we bury the outdated R.I.C.E. protocol (Rest, Ice, Compression, Elevation); you'll learn why icing delays cellular regeneration and why the new "PEACE & LOVE" protocol, centered on progressive mechanical loading and natural inflammation, is the absolute gold standard for recovery[cite: 3]. Keywords: sports physiology, myth debunking, anabolic window, static stretching, knee osteoarthritis, DOMS, RICE protocol, PEACE and LOVE, mechanotransduction, sports science 🎙️ Lactate, the podcast that deciphers science to improve your performance. Key references : Aragon, A. A., & Schoenfeld, B. J. (2013). Nutrient timing revisited: Is there a post-exercise anabolic window? Journal of the International Society of Sports Nutrition, 10(1), 5. Alentorn-Geli, E., et al. (2017). The association of recreational and competitive running with osteoarthritis of the hip and knee: A systematic review and meta-analysis. Journal of Orthopaedic & Sports Physical Therapy, 47(6), 373-390. Dubois, B., & Esculier, J. F. (2019). Soft-tissue injuries simply need PEACE and LOVE. British Journal of Sports Medicine, 54(2), 72-73. Schoenfeld, B. J., & Contreras, B. (2013). Is postexercise muscle soreness a valid indicator of muscular adaptation? Strength & Conditioning Journal, 35(5), 16-21. Afonso, J., et al. (2021). Is delayed onset muscle soreness a valid proxy for muscle hypertrophy? A literature review. Frontiers in Physiology, 12, 736166. Voices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S1 · E79
    July 21 · 23 min

    Episode 79 Off-Season Strategy How to Rest Without Getting Fat or Slow 🧬

    Episode 79 Off-Season Strategy How to Rest Without Getting Fat or Slow 🧬💬 Got a question or feedback? Write us at: lactatesports@gmail.com☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactateSummary: The off-season isn't a break; it's a calculated biological gamble. This episode dismantles the myth that total rest is recovery, revealing it as a form of structured atrophy. We dissect the science of detraining, explaining the biphasic decay of your VO₂ max—the initial, rapid drop caused by contracting blood plasma volume, followed by a slower decline in mitochondrial enzymes. You'll learn why your hard-earned capillary networks (the "plumbing") remain intact while the enzymes (the "water") drain away, and how this explains your ability to regain fitness quickly. We also expose the metabolic crisis of inactivity: plummeting insulin sensitivity via GLUT4 downregulation, which turns your body into a fat-storage machine. To counter this, we provide a blueprint based on the Minimum Effective Training Dose (METD) to preserve fitness with just 2-3 sessions per week, emphasizing non-negotiable intensity. Finally, we detail the principles of Nutritional Periodization—aggressively cutting carbs while keeping protein high (1.6-2.5 g/kg)—to prevent fat gain and muscle loss, ensuring you start the next season stronger, not slower.Keywords: off-season, detraining, nutritional periodization, minimum effective training dose, vo₂ max, insulin sensitivity, sarcopenia, endurance training, transition phase🎙️ Lactate, the podcast that deciphers science to improve your performance.Key references :Mujika, I., & Padilla, S. (2000). Detraining: loss of training-induced physiological and performance adaptations. Part I: short term insufficient training stimulus. *Sports Medicine, 30*(2), 79-87. https://pubmed.ncbi.nlm.nih.gov/10966148/Mujika, I., & Padilla, S. (2000). Detraining: loss of training-induced physiological and performance adaptations. Part II: long term insufficient training stimulus. *Sports Medicine, 30*(3), 155-164. https://pubmed.ncbi.nlm.nih.gov/10999420/Madsen, K., Pedersen, P. K., Djurhuus, M. S., & Klitgaard, N. A. (1993). Effects of detraining on endurance capacity and metabolic changes during prolonged exhaustive exercise. *Journal of Applied Physiology, 75*(4), 1444–1451. https://pubmed.ncbi.nlm.nih.gov/8282588/Spiering, B. A., Mujika, I., Sharp, M. A., & Foulis, S. A. (2021). Maintaining physical performance: The minimal dose of exercise needed to preserve endurance and strength over time. *Journal of Strength and Conditioning Research, 35*(5), 1449–1458. https://pubmed.ncbi.nlm.nih.gov/33629972/Barbieri, E., Zignoli, A., Biral, F., & Schena, F. (2024). Cardiorespiratory and metabolic consequences of detraining in endurance athletes. *Frontiers in Physiology, 14*. https://pmc.ncbi.nlm.nih.gov/articles/PMC10853933/Voices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S1 · E78
    July 17 · 23 min

    Episode 78 The Running Injury Repair Manual Fixing the "Big 4" Without Stopping 🏃

    Episode 78 The Running Injury Repair Manual Fixing the "Big 4" Without Stopping 🏃💬 Got a question or feedback? Write us at: lactatesports@gmail.com☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactateSummary: Tired of the "Boom-Bust" injury cycle where you rest, feel better, and then immediately get hurt again? This episode dismantles the outdated "rest and wait" model for the "Big 4" running injuries: Patellofemoral Pain (Runner's Knee), IT Band Syndrome, Plantar Fasciitis, and Achilles Tendinopathy. We reveal why these are not inflammatory crises ("-itis") but degenerative problems ("-osis") that require mechanical loading to heal. You'll learn the two critical frameworks for active recovery: Dr. Scott Dye's "Envelope of Function," which explains how to progressively expand your tissue's capacity, and the Silbernagel "Pain-Monitoring Model," a 'Traffic Light' algorithm (0-5/10 pain) with a strict 24-hour rule that tells you exactly how much load is safe. We provide a precise, evidence-based blueprint to fix each injury without stopping your training, from using the Rathleff Protocol's heavy-load heel raises to fix plantar fasciitis, to understanding why ITBS is a compression (not friction) syndrome that requires glute strengthening, not foam rolling the band itself.Keywords: running injury, patellofemoral pain, it band syndrome, plantar fasciitis, achilles tendinopathy, mechanotherapy, rehabilitation, pain monitoring, sports science🎙️ Lactate, the podcast that deciphers science to improve your performance.Key references :Dye, S. F. (2005). The pathophysiology of patellofemoral pain: a tissue homeostasis perspective. *Clinical Orthopaedics and Related Research*, *436*, 100-110.Fairclough, J., et al. (2006). The functional anatomy of the iliotibial band during flexion and extension of the knee: implications for understanding iliotibial band syndrome. *Journal of Anatomy*, *208*(3), 309–316.Rathleff, M. S., et al. (2015). High-load strength training improves outcome in patients with plantar fasciitis: A randomized controlled trial with 12-month follow-up. *Scandinavian Journal of Medicine & Science in Sports*, *25*(3), e292-e300.Silbernagel, K. G., et al. (2007). Continued sports activity, using a pain-monitoring model, during rehabilitation in patients with Achilles tendinopathy: a randomized controlled study. *The American Journal of Sports Medicine*, *35*(6), 897-906.Ashtiani, A. A., et al. (2025). Effectiveness of combining a proximal strengthening exercise program and foot orthosis on pain and performance among women with patellofemoral pain syndrome and a pronated foot: study protocol for a randomized clinical trial. *Trials*, *23*.Voices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S1 · E77
    July 14 · 22 min

    Episode 77 [IRONMAN NUTRITION SPECIAL] Fueling for a 10+ Hour Race 🏊‍♂️

    Episode 77 [IRONMAN NUTRITION SPECIAL] Fueling for a 10+ Hour Race 🏊‍♂️💬 Got a question or feedback? Write us at: lactatesports@gmail.com☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactateSummary: The televised collapse of Julie Moss at the 1982 Ironman cemented nutrition as the "Fourth Discipline," proving that mental toughness cannot override thermodynamics. This episode dissects the unique bioenergetic crisis of a 10+ hour race, moving beyond simple gels to explore the inescapable caloric deficit where expenditure (700-1,000 kcal/hr) dwarfs absorption capacity (~400 kcal/hr). We unpack the severe consequences of splanchnic ischemia—the shutdown of blood flow to your gut—and the neurobiology of Sensory-Specific Satiety, the "flavor fatigue" that causes your brain to reject the very fuel you need to survive. This deep dive delivers a practical blueprint for execution: learn the elite caffeine micro-dosing protocol that avoids the late-race crash, how to optimize your bike's aerodynamics to carry fuel without penalty, why training your gut with race-day nutrition is non-negotiable, and how to use your Special Needs bags to deliver a "sensory reset" that keeps you fueling for all 10, 12, or 17 hours.Keywords: ironman, ultra-endurance, nutrition, physiology, splanchnic ischemia, glycogen, caffeine, gut training, aerodynamics, flavor fatigue🎙️ Lactate, the podcast that deciphers science to improve your performance.Key references :Dasa, M. S., Bu, O. A., Sandbakk, Ø., Rønnestad, B. R., Plasqui, G., Gundersen, H., & Kristoffersen, M. (2024). Training volume and total energy expenditure of an Olympic and Ironman world champion: approaching the upper limits of human capabilities. *Journal of Applied Physiology*.Costa, R. J. S., et al. (2017). Gastrointestinal distress: Running versus cycling under matched conditions. *Journal of Science and Medicine in Sport*.How endurance athletes can beat 'flavour fatigue'. Precision Fuel & Hydration. https://www.precisionhydration.com/performance-advice/nutrition/what-is-flavour-fatigue-and-how-endurance-athletes-can-keep-fueling/How much caffeine should you use DURING training and races? Precision Hydration. https://www.precisionhydration.com/performance-advice/nutrition/how-much-caffeine-should-athletes-use/Ironman's New Bike Hydration Rules 2024: What You Need to Know. Dietitian Approved. https://www.dietitianapproved.com/blog/ironman-bike-hydration-rules-2024Voices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S1 · E76
    July 10 · 18 min

    Episode 76 [UTMB PREP #2] Hallucinations & Nightmares When the Brain Breaks 🧠

    Episode 76 [UTMB PREP #2] Hallucinations & Nightmares When the Brain Breaks 🧠💬 Got a question or feedback? Write us at: lactatesports@gmail.com☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactateSummary: Seeing a phantom menagerie of pugs lining the trail or stars draping around your shoulders isn't madness—it's predictable neurobiology. This deep dive dismantles the dangerous myth that ultra-endurance hallucinations are caused by dehydration or metabolic collapse. We reveal the true scientific culprits: extreme sleep pressure forces fragments of REM sleep (your dream state) to intrude into your waking consciousness, while sensory deprivation and neurochemical stress cause your brain to fabricate its own reality. Based on the landmark research of Guillaume Millet, we explain the "Central Fatigue Plateau"—how your brain sacrifices cognitive function to save your muscles from total destruction. Learn the critical difference between elite and amateur sleep strategies, from pre-race sleep banking to mastering the 20-minute micro-nap. We provide the blueprint to manage these Anomalous Perceptual Experiences, explain why you must NOT over-hydrate in response, and teach you how to differentiate a benign vision from life-threatening High Altitude Cerebral Edema (HACE).Keywords: ultra-endurance, utmb, hallucination, sleep deprivation, central fatigue, neuroscience, sports science, ultramarathon, rem sleep, chronobiology🎙️ Lactate, the podcast that deciphers science to improve your performance.Key references :Anomalous Perceptual Experience During Ultra-Endurance Sport: A Systematic Review. (n.d.). *PubMed*. https://pubmed.ncbi.nlm.nih.gov/41847782/Visual hallucinations in 246-km mountain ultra-marathoners: An observational study. (n.d.). *PubMed*. https://pubmed.ncbi.nlm.nih.gov/34708714/Millet, G., et al. (2011). Neuromuscular Consequences of an Extreme Mountain Ultra-Marathon. *PLOS ONE*. https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0017059Millet, G., et al. (n.d.). Alterations of Neuromuscular Function after the World's Most Challenging Mountain Ultra-Marathon. *PLOS*. https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0065596&type=printableSleep habits and strategies of ultramarathon runners. (n.d.). *PMC - NIH*. https://pmc.ncbi.nlm.nih.gov/articles/PMC5942705/Voices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S1 · E75
    July 7 · 19 min

    Episode 75 [TOUR DE FRANCE SCIENCE] Power, Watts & The 8,000-Calorie Limit 🚴‍♂️

    Episode 75 [TOUR DE FRANCE SCIENCE] Power, Watts & The 8,000-Calorie Limit 🚴‍♂️💬 Got a question or feedback? Write us at: lactatesports@gmail.com☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactateSummary: How are modern Tour de France riders shattering records from the EPO era on heavier bikes? This episode deconstructs the staggering bioenergetics behind Tadej Pogačar’s 7.0 W/kg ascents. We dissect the core science, starting with Herman Pontzer's "Alimentary Limit"—a hard ceiling on human endurance at 2.5 times your Basal Metabolic Rate (BMR). You'll learn why the Tour, at a punishing 4.9x BMR, is a 21-day exercise in controlled metabolic self-destruction, survivable only due to its short duration. We then break down the brutal thermodynamics of climbing: with a Gross Mechanical Efficiency of only 23%, a rider's body must dissipate nearly 1500 watts of waste heat, all while their gut is starved of blood flow. This analysis explains the modern fueling revolution, where ingesting 120g/hr of carbohydrates via a precise 1:0.8 glucose-to-fructose ratio is now standard. Finally, we translate this elite science into an actionable blueprint for you. Learn why you must respect the 2.5x BMR limit on multi-day adventures, how to implement a low-residue pre-race diet, the benefits of fueling Zone 2 rides, and how to "train your gut" to avoid catastrophic GI distress.Keywords: tour de france, cycling, physiology, w/kg, vo₂max, nutrition, alimentary limit, tadej pogačar, gross efficiency, gut training🎙️ Lactate, the podcast that deciphers science to improve your performance.Key references :Thurber, C., Dugas, L.R., Ocobock, C., Carlson, B., Speakman, J.R., & Pontzer, H. (2019). Extreme events reveal an alimentary limit on sustained maximal human energy expenditure. *Science Advances, 5*(6), eaaw0341. https://www.researchgate.net/publication/333729202_Extreme_events_reveal_an_alimentary_limit_on_sustained_maximal_human_energy_expenditureBerg, O. K. (2024). The Exceptional Power Outputs and VO₂ of climbing in the Tour de France. *Journal of Science and Cycling*. https://www.jsc-journal.com/index.php/JSC/article/view/1054EF Pro Cycling. (n.d.). The Science of Gut Training: How Tour de France Riders Maximize... Retrieved May 2, 2026, from https://www.efprocycling.com/tips-recipes/tour-de-france-tips-gut-training/road.cc. (2024). Comparing the Tour de France bikes that won on the Plateau de Beille in 1998 and 2024: Marco Pantani's Bianchi Mega Pro XL vs Tadej Pogačar's Colnago V4Rs. Retrieved May 2, 2026, from https://road.cc/content/feature/pantanis-1998-bianchi-vs-pogacars-2024-colnago-309423Voices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S1 · E74
    July 3 · 26 min

    Episode 74 [UTMB PREP #1] Bulletproof Quads The Science of Eccentric Loading 💪

    Episode 74 [UTMB PREP #1] Bulletproof Quads The Science of Eccentric Loading 💪💬 Got a question or feedback? Write us at: lactatesports@gmail.com☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactateSummary: Why do elite runners with massive VO₂max engines fail at UTMB? It's not their lungs; it's catastrophic quadriceps failure on the 10,000 meters of descent. Each footstrike can exceed five times your body weight, and without specific preparation, your muscles will mechanically collapse. This episode dives into the science of "bulletproofing" your quads. We explore eccentric loading—the "negative work" that acts as your body's braking system. Discover the revolutionary "Three-Filament Model" of muscle contraction, where the giant protein titin acts as a molecular bungee cord, allowing you to produce forces 50% higher than your concentric max with a fraction of the oxygen cost. We also unpack the 2024 landmark discovery of sarcomerogenesis: proof that eccentric training forces your muscles to physically grow longer by adding new contractile units, building biological armor against damage. Learn how to weaponize the "Repeated Bout Effect" (RBE), a potent adaptation where a single damaging session provides up to six months of protection. We provide a blueprint for all athletes: the "inoculation run" (a targeted downhill session 3-5 weeks pre-race) and Tempo Eccentric Training in the gym. Finally, we expose the critical mistakes that lead to failure, from improper tapering to over-striding on descents.Keywords: eccentric loading, utmb, trail running, sarcomerogenesis, titin, repeated bout effect, muscle damage, downhill running, strength training🎙️ Lactate, the podcast that deciphers science to improve your performance.Key references :Andrews, N. C., Hedges, C. P., Lahey, K. A., Sharafi, M., Lizzio, V. A., & Herzog, W. (2024). Massive sarcomerogenesis in human skeletal muscle following long-term eccentric exercise intervention. *Scientific Reports*, *14*(1), 12891. https://pmc.ncbi.nlm.nih.gov/articles/PMC11863339/Hody, S., Croisier, J. L., Leprince, P., & Collard, F. (2019). The mysteries of eccentric muscle action. *Frontiers in Physiology*, *10*, 696. https://pmc.ncbi.nlm.nih.gov/articles/PMC6189265/Maroto-Izquierdo, S., García-López, D., & de Paz, J. A. (2017). Implementing Flywheel (Isoinertial) Exercise in Strength Training: Current Evidence, Practical Recommendations, and Future Directions. *Frontiers in Physiology*, *8*, 1193. https://pmc.ncbi.nlm.nih.gov/articles/PMC7283738/Nishikawa, K. C., Monroy, J. A., Uyeno, T. E., Yeo, S. H., Pai, D. K., & Lindstedt, S. L. (2012). Is titin a 'winding filament'? A new twist on muscle contraction. *Journal of Experimental Biology*, *215*(Pt 23), 4011–4019. https://pmc.ncbi.nlm.nih.gov/articles/PMC3259925/Nosaka, K., Newton, M., & Sacco, P. (2001). How long does the protective effect on eccentric exercise-induced muscle damage last? *Medicine and Science in Sports and Exercise*, *33*(9), 1490–1495. https://pubmed.ncbi.nlm.nih.gov/11528337/Voices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S1 · E73
    June 30 · 26 min

    Episode 73 [TOUR DE FRANCE FUN] Wine, Cigarettes & Nails The Craziest Stories 🚲

    Episode 73 [TOUR DE FRANCE FUN] Wine, Cigarettes & Nails The Craziest Stories 🚲💬 Got a question or feedback? Write us at: lactatesports@gmail.com☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactateSummary:Imagine a Tour de France where riders drank wine for hydration, smoked cigarettes on climbs, and survived armed mobs and roads littered with nails. This episode dissects the brutal physiology behind these historical myths. We reveal why alcohol, believed to be a fuel source, actually catastrophically impairs thermoregulation by acting as a peripheral vasodilator and suppressing antidiuretic hormone, leading to severe dehydration and cardiovascular drift. You'll learn how smoking to "open the lungs" introduced carbon monoxide that suffocated the oxygen transport system by forming carboxyhemoglobin, which has an affinity for hemoglobin 250 times greater than oxygen, crippling your VO₂ max. We then connect this primitive self-sabotage to the cutting-edge (and now banned) practice of carbon monoxide rebreathing, a method used by top teams to artificially trigger EPO production by manipulating the HIF-1α pathway, mimicking altitude training at sea level. Finally, we translate these historical errors into a practical blueprint for you: why ethanol must never be used for intra-race fueling, the dangers of overriding your brain's central governor, and the lethal risks of chasing marginal gains with toxicological "hacks."Keywords: tour de france, physiology, ethanol, carbon monoxide, doping, endurance, cycling, epo, hif-1α, history🎙️ Lactate, the podcast that deciphers science to improve your performance.Key references :Lecoultre, V., & Schutz, Y. (2009). Effect of a small dose of alcohol on the endurance performance of trained cyclists. *PubMed*. https://pubmed.ncbi.nlm.nih.gov/19136497/nachrichten.idw-online.de. (2020, August 4). *University of Bayreuth Study: Carbon monoxide improves endurance performance*. IDW. https://nachrichten.idw-online.de/2020/08/04/university-of-bayreuth-study-carbon-monoxide-improves-endurance-performanceTrainingPeaks. (n.d.). *The Science and Controversy of Carbon Monoxide Rebreathing*. Retrieved April 7, 2026, from https://www.trainingpeaks.com/blog/carbon-monoxide-rebreathing/Vella, L. D., & Cameron-Smith, D. (2010). Alcohol, athletic performance and recovery. *Nutrients*, *2*(8), 781–789. https://pmc.ncbi.nlm.nih.gov/articles/PMC3257708/Zinner, C., & Schmidt, W. (2024). Low-dose carbon monoxide inhalation to increase total hemoglobin mass and endurance performance: scientific evidence and implications. *Journal of Applied Physiology*, *136*(6), 1335-1337. https://pmc.ncbi.nlm.nih.gov/articles/PMC11519625/Voices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S1 · E72
    June 26 · 25 min

    Episode 72 The Future of Doping Biological Passports and New Detectable Drugs 🧬

    Episode 72 The Future of Doping Biological Passports and New Detectable Drugs 🧬💬 Got a question or feedback? Write us at: lactatesports@gmail.com☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactateSummary: The anti-doping arms race has reached a critical inflection point. Forget simply testing for drugs; the future is about tracking your unique biological footprint. This episode deciphers the Athlete Biological Passport (ABP), the revolutionary system that uses Bayesian statistical models to detect doping's secondary effects. We break down the mathematics of the OFF-score, explaining how it forensically distinguishes the abrupt hematological shifts of rhEPO micro-dosing from the gradual adaptations of altitude training. We also explore the cutting-edge science that has shattered the myth of "undetectable" gene doping, detailing how new assays like HiMDA can now identify CRISPR-Cas9 modifications in a tiny blood sample. For elite athletes, the 2026 WADA code brings massive changes. We provide a practical blueprint for navigating the new 60-minute post-exercise testing window, the strict prohibition on blood withdrawal without a TUE, and the career-ending risks of unregulated research peptides like BPC-157, which can be prosecuted through non-analytical evidence alone.Keywords: athlete biological passport, wada, doping, crispr, epo, micro-dosing, anti-doping, sports science, hif stabilizers🎙️ Lactate, the podcast that deciphers science to improve your performance.Key references :Yi, H., et al. (2025). High-throughput multiplexed gene and cell doping analysis through CRISPR-Cas12a system integrated with blood direct PCR. *Science Advances*. https://pmc.ncbi.nlm.nih.gov/articles/PMC12239944/AbuHaweeleh, M., et al. (2025). Integrating Advanced Metabolomics and Machine Learning for Anti-Doping in Human Athletes. *Metabolites*. https://www.mdpi.com/2218-1989/15/11/696Sottas, P. E., et al. (2018). A Bayesian Approach for the Use of Athlete Performance Data for Anti-Doping Purposes. *Frontiers in Physiology*. https://pmc.ncbi.nlm.nih.gov/articles/PMC6060570/Zorzoli, M., et al. (2021). Factors Confounding the Athlete Biological Passport: A Systematic Narrative Review. *Nutrients*. https://pmc.ncbi.nlm.nih.gov/articles/PMC8443715/World Anti-Doping Agency. (2026). *WADA publishes revised 2026 International Standard for Testing and Investigations with changes to blood collection wait times for Athletes*. WADA News. https://www.wada-ama.org/en/news/wada-publishes-revised-2026-international-standard-testing-and-investigations-changes-bloodVoices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S1 · E71
    June 23 · 21 min

    Episode 71 Insoles & Orthotics Do You Really Need Them or Is It Marketing? 🦶

    Episode 71 Insoles & Orthotics Do You Really Need Them or Is It Marketing? 🦶💬 Got a question or feedback? Write us at: lactatesports@gmail.com☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactateSummary: The foot orthotics market is projected to hit $8.4 billion, but is the technology based on solid science or just clever marketing? This episode dismantles the outdated dogma of mechanically "correcting" your foot's alignment, pioneered by Dr. Merton Root. We explore the modern neurophysiological revolution led by Dr. Benno Nigg, whose "Muscle Tuning" and "Comfort Filter" paradigms reframe orthotics as sensory input devices that work with your body's preferred movement path, not against it. We reveal the hard data: ultrasound studies prove that 12 weeks of custom orthotic use can trigger rapid disuse atrophy, shrinking key intrinsic foot muscles like the abductor hallucis by over 17%. Finally, we deliver an actionable blueprint: learn why a $50 prefabricated insert is often clinically equivalent to a $500 custom device for plantar fasciitis, why "short-foot" exercises are mandatory to prevent muscle wasting, and the critical reason you must never combine custom orthotics with carbon-plated super shoes due to severe biomechanical conflicts that negate performance and increase injury risk.Keywords: orthotics, insoles, biomechanics, running economy, foot muscle, plantar fasciitis, super shoes, benno nigg, comfort filter, injury prevention🎙️ Lactate, the podcast that deciphers science to improve your performance.Key references :Cochrane, R., et al. (2019). The effect of foot orthoses and insoles on running economy and performance in distance runners: A systematic review and meta-analysis. Journal of Sports Sciences. https://pubmed.ncbi.nlm.nih.gov/31423908/Jung, D. Y., et al. (2011). Effect of foot orthoses and short-foot exercise on the cross-sectional area of the abductor hallucis muscle in subjects with pes planus: a randomized controlled trial. Journal of Back and Musculoskeletal Rehabilitation. https://pubmed.ncbi.nlm.nih.gov/22142711/Nigg, B. M., Baltich, J., Hoerzer, S., & Enders, H. (2015). Running shoes and running injuries: mythbusting and a proposal for two new paradigms: 'preferred movement path' and 'comfort filter'. British Journal of Sports Medicine. https://bjsm.bmj.com/content/49/20/1290Protopapas, K., et al. (2020). The effect of a 12-week custom foot orthotic intervention on muscle size and muscle activity of the intrinsic foot muscle of young adults during gait termination. Clinical Biomechanics. https://pubmed.ncbi.nlm.nih.gov/32521283/Tran, K., & Spry, C. (2019). Custom-Made Foot Orthoses versus Prefabricated Foot Orthoses: A Review of Clinical Effectiveness and Cost-Effectiveness. Canadian Agency for Drugs and Technologies in Health. https://www.ncbi.nlm.nih.gov/books/NBK549527/Voices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S1 · E70
    June 19 · 20 min

    Episode 70 Returning from Injury The Exact Protocol to Start Running Again ⚕️

    Episode 70 Returning from Injury The Exact Protocol to Start Running Again ⚕️ 💬 Got a question or feedback? Write us at: lactatesports@gmail.com ☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactate Summary: For over 40 years, the RICE protocol (Rest, Ice, Compression, Elevation) has been the unquestioned dogma for treating injuries. This episode dismantles that myth, revealing how its origin stems from a 1962 surgical procedure to reattach a severed arm, not sports science. We dive deep into the cellular biology of healing, explaining why applying ice and taking NSAIDs is catastrophic for tissue repair. You'll learn how these methods block the essential inflammatory cascade, halting the macrophage and IGF-1 signaling required to build new, strong tissue. We replace the outdated RICE with the evidence-based PEACE & LOVE framework, detailing the science of mechanotransduction—how controlled mechanical stress is the true catalyst for organized, resilient recovery. This isn't just theory; it's a practical blueprint. We provide the exact, non-negotiable exit criteria you must meet before your first run (e.g., >80% Limb Symmetry Index, 1.45 Nm/kg quadriceps strength). You'll get a stage-gated walk-run protocol and learn to use the Silbernagel Pain-Monitoring Model, which shows that running with pain up to 5/10 is not only safe but optimal for tissue remodeling. Finally, we address the psychological hurdles, quantifying the fear of reinjury (kinesiophobia) and exposing why traditional hop tests can be dangerously misleading. Keywords: injury, rehabilitation, running, peace & love, rice protocol, mechanotransduction, kinesiophobia, tendinopathy 🎙️ Lactate, the podcast that deciphers science to improve your performance. Key references : Dubois, B., & Esculier, J. F. (2019). Soft-tissue injuries simply need PEACE and LOVE. *British Journal of Sports Medicine*, *54*(2), 72-73. Kotsifaki, A., et al. (2022). Measuring only hop distance during single leg hop testing is insufficient to detect deficits in knee function after ACL reconstruction. *British Journal of Sports Medicine*, *56*(5), 249-254. Silbernagel, K. G., Thomeé, R., Eriksson, B. I., & Karlsson, J. (2007). Continued sports activity, using a pain-monitoring model, during rehabilitation in patients with Achilles tendinopathy. *The American Journal of Sports Medicine*, *35*(6), 897-906. Voices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S1 · E69
    June 16 · 23 min

    Episode 69 The Norwegian Method Double Thresholds Explained for Amateurs 🧬

    Episode 69 The Norwegian Method Double Thresholds Explained for Amateurs 🧬 💬 Got a question or feedback? Write us at: lactatesports@gmail.com ☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactate Summary: How did Norwegian athletes rewrite the record books in running and triathlon? This episode dissects the science behind their controversial training system: the double-threshold day. We reveal why the "Golden Zone" for adaptation is a strict 2.3–3.0 mmol/L of blood lactate, debunking the old 4.0 mmol/L laboratory standard. You'll learn the critical biomechanics: how splitting a massive workload into two sessions, separated by a 6-to-8-hour window, allows you to manipulate muscle viscoelasticity and "outrun" the inflammatory cascade that causes DOMS. We break down the landmark Ghiarone et al. (2019) study, which proves that the second, glycogen-depleted session enhances mitochondrial *efficiency*, not just volume. We also explore the fierce academic debate between this Pyramidal model and Dr. Stephen Seiler's Polarized approach and provide a practical blueprint for amateurs, detailing the minimum volume required and the critical mistakes to avoid so you can apply these principles without risking injury. Keywords: norwegian method, double threshold, lactate, pyramidal training, polarized training, stephen seiler, marius bakken, mitochondrial efficiency, endurance, vo₂ 🎙️ Lactate, the podcast that deciphers science to improve your performance. Key references : Bakken, M. (2025). The Norwegian Model Revisited. https://www.mariusbakken.com/the-norwegian-model.html Ghiarone, T., Andrade-Souza, V. A., Learsi, S. K., et al. (2019). Twice-a-day training improves mitochondrial efficiency, but not mitochondrial biogenesis, compared with once-daily training. *Journal of Applied Physiology*, 127(3), 713-725. DOI: 10.1152/japplphysiol.00060.2019 Kelemen, B., Benczenleitner, O., & Tóth, L. (2023). The Norwegian double-threshold method in distance running: Systematic literature review. *Scientific Journal of Sport and Performance*, 3(1), 38–46. DOI: 10.55860/NBXV4075 PointFit Technology. (2026). PF-Sweat Patch: Non-invasive & Continuous Lactate Sensor. https://www.ces.tech/ces-innovation-awards/2026/pf-sweat-patch-non-invasive-continuous-lactate-sensor/ Seiler, S. (2023). Norwegian Method or Just Good Holistic Practice? Fast Talk Laboratories. https://www.fasttalklabs.com/fast-talk/norwegian-method-or-just-good-holistic-practice-with-dr-stephen-seiler/ Voices generated by artificial intelligence from the scientific report produced by the Lactate team.

  • S1 · E68
    June 12 · 22 min

    Episode 68 Genetics vs. Hard Work Is Your VO2max Ceiling Fixed at Birth? 🧬

    Episode 68 Genetics vs. Hard Work Is Your VO2max Ceiling Fixed at Birth? 🧬 💬 Got a question or feedback? Write us at: lactatesports@gmail.com ☕ Buy a Gel Caf for Lactate to support the work: ko-fi.com/lactate Summary: Are you born with a fixed aerobic ceiling, or can hard work shatter any genetic limit? This episode dismantles the nature vs. nurture debate for endurance performance. We explore why the man with the highest recorded VO₂max in history, Oskar Svendsen, retired before 21, and how Finnish skier Eero Mäntyranta dominated the Olympics with a rare genetic mutation. Based on landmark research like the HERITAGE Family Study, we reveal that while genetics dictate about 50% of your baseline fitness and 47% of your trainability, the concept of a "non-responder" is a physiological illusion. The science is clear: a lack of progress is a failure of training dose, not DNA. We break down the Fick equation to show how central cardiac output is the ultimate bottleneck, and how epigenetic changes—specifically the demethylation of the PGC-1α promoter—drive peripheral muscle adaptations. Finally, we provide a practical blueprint: amateurs must focus on escalating volume to expand hemoglobin mass, while elites must chase marginal gains through mechanical efficiency and epigenetic resensitization. Keywords: vo₂max, genetics, endurance, training, epigenetics, pgc-1α, heritage study, non-responder, cardiac output, athletic potential 🎙️ Lactate, the podcast that deciphers science to improve your performance. Key references : Bouchard, C., An, P., Rice, T., Skinner, J. S., Wilmore, J. H., Gagnon, J., Pérusse, L., Leon, A. S., & Rao, D. C. (1999). Familial aggregation of VO2max response to exercise training: Results from the HERITAGE Family Study. *Journal of Applied Physiology, 87*(3), 1003–1008. https://doi.org/10.1152/jappl.1999.87.3.1003 Montero, D., & Lundby, C. (2017). Refuting the myth of non-response to exercise training: 'non-responders' do respond to higher dose of training. *The Journal of Physiology, 595*(11), 3377-3387. https://doi.org/10.1113/JP273480 Levine, B. D. (2008). VO2max: what do we know, and what do we still need to know? *The Journal of Physiology, 586*(1), 25–34. https://doi.org/10.1113/jphysiol.2007.147629 Barrès, R., et al. (2012). Acute exercise remodels promoter methylation in human skeletal muscle. *Cell Metabolism*. MedRxiv. (2024). Delphi: Deep learning for phenotype inference and polygenic risk score computation. https://doi.org/10.1101/2024.04.19.24306079v3 Voices generated by artificial intelligence from the scientific report produced by the Lactate team.

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