Andrew Sellars, MD, is the team director of Balance Point Racing, a triathlon and cycling club based in British Columbia, Canada. He is also the co-founder of sports technology companies VO2 Master (that manufactures a portable metabolic analyser) and BreatheWayBetter (a respiratory training device). In this interview, we discuss training, testing, and dive deep into breathing, the respiratory system, and respiratory training.  IN THIS EPISODE YOU'LL LEARN ABOUT: -A physiological systems based approach to endurance training -Differences between structural and functional adaptations to endurance training -Andrew's approach to testing and athlete assessments, and how it has changed over time -An overview of the respiratory system in endurance sports -Respiratory training: scientific and anecdotal evidence, and practical applications SHOWNOTES: https://scientifictriathlon.com/tts361/ 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 unique Dryland Swim Trainer that allows you to improve technique, power, and swim training consistency. With the trainer you can do specific power and technique work, including working on your catch and core activation, and it helps you stay consistent even if you don’t have much time to train. Get the special Zen8 x TTS bundle including the Swim Trainer and a number of ZEN8 training plans and on-demand workouts on zen8swimtrainer.com/tts. LINKS AND RESOURCES: Balance Point Racing  VO2 Master BreatheWayBetter 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 [email protected] or connect on Instagram, Facebook, or Twitter.