We are an independent and passionate team, based in Amsterdam. We are grateful to be supported by a growing community of sport enthusiasts and elite athletes, including coaches & athletes in the NBA, MLS, NFL, MLB, NHL and many Olympic disciplines. Currently, more than 10 000 people across the globe are using HRV4Training to measure physiological stress and better understand how their body responds to daily stressors, from training to lifestyle.
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Our goal is to provide you with the most effective  tool to collect and analyze physiological data so that training and lifestyle stressors can be better balanced, resulting in improved health and performance.

Marco ​Altini

Product development & ​research

Marco is a scientist and developer mainly working at the intersection between health, technology and performance.

He holds a PhD cum laude in applied machine learning, a M.Sc. cum laude in computer science engineering and is currently enrolled in a M.Sc. in human movement sciences and high-performance coaching. He has published more than 50 papers and patents at the intersection between physiology, health, technology and human performance.
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Currently, he is leading product development & research for HRV4Training. He is a passionate runner.

Alessandra ​Saviotti

​Community, marketing & admin

Alessandra is a curator, producer and organizer who had collaborated with many cultural institutions in Europe and United States. She received her BA in Preservation of Cultural Heritage from the University of Bologna (IT) and she graduated with an MA from the Visual Arts Faculty at IUAV Venice. She had a research position at the Jan van Eyck Academie in Maastricht (NL). ​

​A former gymnast, she is a certified first level gymnastic trainer and judge, a certified international pool lifeguard, a passionate runner and a committed yogi. 

​Since 2015 she is business developer and communication manager for HRV4Training.

Daniel Rowland

Ambassador & customer support

Daniel is a trail runner and has completed multi-stage races in the Amazon Jungle and in the deserts of Chile and South Africa. He has raced across the frozen tundra of Alaska and on the steep, volcanic slopes of the Canary Islands. In 2019 he placed 2nd in the Gran Trail Courmayeur 105km ultra-marathon.

He lives in Switzerland which provides the perfect base for training in the alps and preparing for mountain ultra-marathons.

Besides working at HRV4Training in customer support, Daniel works as a running coach with an emphasis on helping clients who are pursuing trail, ultra-marathon and stage racing goals.​

Serena Porrazzo

Ambassador & customer support

Serena is a full-time electronic engineer (holding a PhD), mum, passionate cook and runner. Being a runner and a working mum isn’t contradictory, they’re complementary. Of course, now it's more about 'making time for herself ' rather than, 'making sure she has a certain fitness for the race' but she is convinced that staying fit, healthy, and strong is crucial, for everybody. Her family has a history of kidney failures, strokes, heart attacks and hypertension.

​She'd like to represent women, people, who don’t want to lose themselves. That has a need for an escape, for accomplishing their personal goals through training. Everybody deserves to pursue self-improvement. Especially if it makes us have more energy, more motivation for exploiting life at its best, the longest we can, against all the odds.

Trever Gray

Business development lead, North America

​Trever is professor of anatomy & physiology and nutrition at Tacoma Community College in Tacoma, WA, USA. He holds a M.Sc in integrative human physiology and a B.Sc. in exercise science and nutrition.
 
Trever, who was a two-time Olympic Trials qualifier in swimming, is also a coach with over 15 years of experience at the high school, club, and college levels. In the year 2000, he ranked 15th in the world in the 200-meter backstroke and continues to train to this day.
 
Trever believes HRV4Training monitoring is the next step in coaching and training evolution because it takes the guesswork out of when and how much training stimulus should be given.