Training Science Podcast

For decades, lactate was viewed as a waste product associated with fatigue and declining performance. Today, a growing body of research paints a very different picture. In this episode, sports scientist and researcher Aitor Viribay Morales explores the evolving science of lactate, from its role as a critical fuel source to its emerging importance as a signaling molecule that influences performance, recovery, and adaptation. The conversation dives into the lactate shuttle theory, the relations...

TOP EPISODE REPLAY Profiling and training SPEED🏎️ individually might be 30% (!!!) of any SPRINTING performance - get ON IT! Prof. Dr. JB Morin would like you to consider that if you do not cover, train or assess the WHOLE SPECTRUM of what your athletes can or cannot do, then you are likely leaving BIG 💥💨 gains on the table. Does 30% matter to you? In the 115th episode of The Training Science Podcast, Martin and JB discuss: 📖 the Force-Velocity relationship in SPRINTING; ✅ training SPECIFIC fo...

We sit down with Prof Guillaume Millet to get clear on what fatigue actually is, why durability became the new buzzword, and what really limits performance in ultra endurance events. We dig into central vs peripheral fatigue, why muscle damage matters so much in trail and mountain running, and how shock weekends can build the resilience you cannot fake on race day. We also talk heat, perceived exertion, field monitoring tools, and his new Zero to 100 project taking sedentary adults to a 100k ...

In this episode, we sit down with Dr Andrew Koutnik to unpack one of the most discussed sports science reviews in recent years. Drawing on more than 100 years of research and a series of tightly controlled trials, we examine evidence that challenges the long-held belief that more carbohydrates automatically lead to better performance. We explore why muscle glycogen and carbohydrate oxidation do not consistently predict performance, how athletes can sustain high-intensity and endurance output ...

In this episode, we sit down with Professor Arne Güllich to unpack one of the most talked about sports science papers in years, recently published in Science. Drawing from data on more than 30,000 high performers across sport, music, chess, and science, the conversation challenges the belief that early dominance and early specialization are the keys to elite success. Arne breaks down the now viral performance trajectory figure, explores why most world class adults were not standout juniors, a...

In this episode of the Training Science Podcast, Prof Paul Laursen is joined by Stephan Nüsser, performance physiologist and founder of a performance diagnostics lab in Germany, for a deep and practical discussion on lactate testing and endurance performance. Drawing from decades of applied work with cyclists, endurance athletes, and motocross professionals, Stephan explains how lactate can be used to individualize training, define true Zone 2 intensity, and guide long-term athlete developmen...