Stephan van der Zwaard, PhD, is an assistant professor at the Vrije Universiteit Amsterdam as well as a data scientist at Leiden University. With his background in both sports science and exercise physiology as well as data science, Stephan is able to work at the intersection of these fields to provide unique perspectives both in academia and applied sports such as cycling and speed skating. Today we discuss one of Stephan's most recent papers, titled "Under the hood: Skeletal muscle determinants of endurance performance".     IN THIS EPISODE YOU'LL LEARN ABOUT: -A summary of VO2max, lactate threshold, and exercise economy (whole body-determinants of endurance performance) -A deep dive into skeletal muscle determinants of endurance performance (including muscle fiber type, mitochondrial oxidative capacity, capillarisation, myoglobin and others) -Different training types and training intensities (e.g. low intensity, moderate intensity, high intensity, sprint interval training etc), and how they might impact the skeletal determinants of endurance performance -Why the polarised training model tends to work so well for endurance athletes   SHOWNOTES: https://scientifictriathlon.com/tts313/   SCIENTIFIC TRIATHLON AND THAT TRIATHLON SHOW WEBPAGE: www.scientifictriathlon.com/podcast/   SPONSORS: ROKA - Exceptional quality triathlon wetsuits, trisuits, swimskins, goggles, performance sunglasses as well as prescription eyeglasses and sunglasses.  Online vision test for prescription updates and home try-on options available for eyeglasses. Ships from  the US, UK and EU. Trusted by world-leading athletes such as  Lucy Charles-Barclay, Javier Gómez Noya, Flora Duffy, Morgan Pearson, Summer Rappaport and others in triathlon, cycling, speed skating, and many more. Visit roka.com/tts for 20% off your order.   ZEN8 - The ZEN8 Indoor Swim Trainer is a tool for time-crunched triathletes looking to improve swim specific strength and technique. The swim trainer is a perfect complement to your training in the pool. On days when you don’t have time to go to the pool, you can now do a short but effective home-based workout on the trainer. It is inflatable, so doesn’t take up much space, and best of all, it is very affordable. Get 20% off your order at zen8swimtrainer.com/tts.   LINKS AND RESOURCES: Stephan's Twitter, Research Gate and website Under the Hood: Skeletal Muscle Determinants of Endurance Performance - van der Zwaard et al. 2021 All "Science and Physiology" episodes on That Triathlon Show   RATE AND REVIEW: If you enjoy the show, please help me out by subscribing, rating and reviewing: www.scientifictriathlon.com/rate/   CONTACT: Want to send feedback, questions or just chat? Email me at mikael@scientifictriathlon.com or connect on Instagram, Facebook, or Twitter.