View all show notes and timestamps on the KoopCast website.Episode overview:Dr. Nicolas Berger is a Senior Lecturer in Sport & Exercise at Teeside University’s Centre for Rehabilitation. In this episode, we discuss the emerging topic of durability in endurance sports and how it applies to ultrarunning. Topics discussed: 1- Why examining physiological variables matter and why determining what variables matter more is important for training design2- How physiological testing is limiting3- The concept of durability4- What affects durability and how to improve it5- How progression runs useful in some contexts and not in othersEpisode highlights:

Muscular fatigue: Gui Millet’s 2011 presentation, ultramarathon runners are more muscular than marathon runners, additional muscle mass may combat fatigue, strength demands of uphill and downhill running, sacrificing running economy for strength and durability

Strength gains from training: trail runners get strength gains naturally, there is a higher bar for strength training trail runners, strength for running economy in road runners