Heart Rate Variability - New perspectives and insights with Marco Altini, PhD | EP#325

Marco Altini, has a PhD in Data Science and an MSc in Human Movement Sciences and High-Performance Coaching. He is the founder of HRV4Training and a passionate runner. In this interview, we discuss the latest in research and application when it comes to heart rate variability (HRV). IN THIS EPISODE YOU'LL LEARN ABOUT: -A brief summary of what HRV is and the benefits of monitoring it -What are the most important factors that influence HRV and resting heart rate (RHR), and what are their relative importance or magnitude? Based on Marco's large-scale, free-living study published in late 2021.  -Chest strap or phone camera measurement of HRV: what are the differences?  -Should you measure in the morning, or use a tool that allows you to measure HRV all night (and day)?  -How to use and interpret HRV and RHR - why and when to rely on one or the other -The current state of evidence when it comes to "HRV-guided training"  SHOWNOTES: https://scientifictriathlon.com/tts325/ 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 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: Marco's website, Medium blog, Instagram, Twitter and Research Gate HRV4Training website and Instagram Heart Rate Variability (HRV) – Applications and Insights in 2018 and Beyond with Marco Altini | EP#144 What Is behind Changes in Resting Heart Rate and Heart Rate Variability? A Large-Scale Analysis of Longitudinal Measurements Acquired in Free-Living - Altini and Plews 2021 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.

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That Triathlon Show is the podcast for triathletes of all levels who want to train smarter and race faster. With over 600 episodes and millions of downloads since 2017, this show cuts through the noise and misinformation, delivering practical, no-nonsense advice rooted in both the art and science of training and performance. The podcast features in-depth interviews with the world’s best coaches, top sports scientists, and elite athletes. Each episode dives into the nuances of training methodology, performance optimization, and race-day execution, providing insights you can apply right away. Whether you're preparing for a supersprint or an Ironman, or focusing on a single sport like swimming, cycling, or running, you'll find expert guidance and relevant content here. The podcast is hosted by Mikael Eriksson, a former engineer now coaching professional and age-group athletes. Mikael is a Level III certified coach with over a decade of experience in coaching. Join a global community of dedicated triathletes and take your performance to the next level. Learn more at www.scientifictriathlon.com/podcast.