The byrizz™ Rehab & Performance Podcast - Episode #20 - Season 2, 20 March 2022

Heart Rate Variability - Marco Altini, Ph.D. and founder of the HRV4 Training App. 

HRV is determined by computing so-called features, starting from a series of RR intervals, or differences between heartbeats. Photo: Marco Altini.

Welcome to The byrizz Rehab & Performance Podcast episode number 20. In this episode, I speak to Marco Altini. ​Marco is a scientist and developer mainly working at the intersection between health, technology, and performance. He has a Ph.D. in Data Science and an MSc in Computer Science Engineering as well as another MSc in Human Movement Sciences, with a specialization in High-Performance Coaching.

Marco started HRV4Training in 2012, making it a tool that is today trusted by more than 150 000, including Olympic medalists and professional teams. HRV4Training is a mobile platform using advanced signal processing and data analytics to measure physiology and quantify stress, helping athletes of all levels to better balance training and lifestyle stressors to improve performance. 

Marco is currently working with product development of the HRV4 Training app and research (clinical studies, insights, new features development from user-generated data, and large scale data analysis) as well as producing and delivering educational material on the topic of HRV, stress, and performance. He is also a guest lecturer at Vrije University in Amsterdam where he teaches at the Physiology Section of the Department of Human Movement Sciences. 


  • Who is Marco Altini?
  • Marcos's role and work within the field of Physiology, Data science.
  • The HRV4 Training App: The history and the science behind it. 
  • How to get the most out of Heart Rate Variability (HRV)
  • Is HRV for everybody? What can you get from it as a recreational athlete? 
  • Marcos insights towards the future of his work with the app and research. 

Want to catch up with Marco and get to know more about his work? Follow Marco on Twitter or visit to learn more about the solutions Marco has developed.

The episode is in English and will be available on your favorite audible podcast resource from the 20th of March.

This episode is sponsored by The byrizz™ Rehab & Performance application. The application gives you the continuity to reach your goals at any level, whenever, and wherever. The workouts, programs, and boot camps are made and customized to your needs and consist of trained therapists and strength & conditioning coaches with long experience in health and fitness. byrizz clients range from novice athletes to World Cup medalists and Olympians.
This episode is also brought to you in cooperation with Sparta Science. Sparta Science is the industry's gold standard for Force Plate Machine Learning that predicts, improves, and validates individual and team availability. With a simple two-minute scan per person, organizations increase fitness levels, prevent injuries, and accurately predict team readiness using the world's largest machine learning force plate database. For more information about Sparta Science, visit

The HRV4 Training app is scientifically validated in several research studies. You can follow Marcos and his colleague's research on physiology (Heart Rate Variability at rest as well as other metrics collected during exercise) and performance on Research Gate, by following the link here