Mark Burnley, PhD, is an exercise physiologist at the University of Wolverhampton. In this episode, we discuss the VLaMax, polarised training (and it not being optimal for endurance athletes), and using measures of complexity to assess fatigue. This is part two of a two-part interview with Mark. IN THIS EPISODE YOU'LL LEARN ABOUT: -VLaMax: the background, reason for recent surge to popularity, and the mechanistic and practical issues with measuring it -Polarised training is not optimal for endurance athletes: the arguments against polarised training being an "ideal" training intensity distribution, and why quantifying training intensity distributions may not be the smartest thing to do in the first place -How measures of complexity (e.g. Approximate entropy ApEn, alpha-exponent of Detrended Fluctuation analysis DFA) can be used to assess fatigue, and the potential applications thereof SHOWNOTES: https://scientifictriathlon.com/tts331/   SCIENTIFIC TRIATHLON AND THAT TRIATHLON SHOW WEBPAGE: www.scientifictriathlon.com/podcast/ SPONSORS: Precision Fuel & Hydration - Optimise and individualise your fueling and hydration strategy using the free online Sweat Test and Quick Carb Calculator on precisionfuelandhydration.com. Book a free one-on-one consultation to chat with the team and refine your fueling and hydration even further. Listeners of That Triathlon Show get 15% off their first order of fueling and hydration products. If you didn't catch the discount code in the episode, email Andy and the team at hello@precicionhydration.com and they will be happy to help.  ZEN8 - The ZEN8 Indoor Swim Trainer is a one of a kind swim bench for time-crunched triathletes looking to improve their swim technique, power and propulsion, and consistency of swim training. It is very affordable, about the price of a pair of running shoes, and Zen8 offer free shipping in the US and the UK. Best of all, you can try it risk-free. If you don't love it after two weeks, send it back and get a full refund. Get 20% off your order at zen8swimtrainer.com/tts. LINKS AND RESOURCES: Mark's Twitter, ResearchGate, and Youtube channel Critical Power and VO2 kinetics with Mark Burnley, PhD | EP#257 Lactate threshold with Mark Burnley, PhD | EP#330 DFA alpha-1: A non-invasive, cheap option for estimating the aerobic threshold with Bruce Rogers, MD | EP#329 Things you didn't know you didn't know: physiological complexity - video on All Out Physiology Polarized Training is Not Optimal for Endurance Athletes - Burnley et al. 2022 Polarized Training is Optimal for Endurance Athletes - Foster et al. 2022 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.