Why Bigger Muscles Hurt Endurance (The Biological Limit)
Level up your coaching and training with these resources: 💪 Our Training Plans (HYROX / Functional Fitness): https://strivee.app/marketplace/p/wod... 🧠 WOD-Science Performance Camps (info and signup): https://www.wod-science.com/academy 💪 (NEW) Affiliate programming: https://strivee.app/marketplace/plan/... . 🤯 Need Training Advice? Book a free call: https://www.wod-science.com/book-online 🏋️Advanced fitness testing in Zurich: https://www.wod-science.com/services-4 🩸10% off Muscle Oxygen Sensors (NIRS) via https://train.red/collections/smo2-se... - use code WOD_SCIENCE at check-out. – I know a lot of people get triggered by the term, but “HYBRID” sports are booming. Essentially athletes want to gain strength/muscle size and endurance simultaneously for instance in CrossFit (strength-biased) or Hyrox (endurance-biased). In this video, I break down a fascinating new study by Hans Degens and colleagues (https://physoc.onlinelibrary.wiley.co.... They analyzed nearly 7,000 muscle fibres from both humans and rodents, and revealed a clear biological ceiling: as fibres get bigger, diffusion and physical constraints limit how much oxygen they can actually use. In other words, there’s a built-in trade-off between muscle size and endurance capacity. Hope you enjoy – TIMESTAMPS 00:00 - Intro 01:11 - How a muscle receives oxygen (diffusion) 04:09 - Measuring the ‘ceiling’ of muscle oxygenation 08:25 - What are the implications for hybrid sports? 12:11 - Case study of Fabian Eisenlauer (elite hyrox) 13:35 - Building strength and endurance simultaneously, can it be done? (study) 16:14 - A breakdown of our training plans 17:15 - Take-home messages #science #hybrid
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