# The VO₂ Accuracy of Wearables | Peter Attia ## Метаданные - **Канал:** Peter Attia - **YouTube:** https://www.youtube.com/watch?v=0MX-AJQ1utA - **Дата:** 16.01.2026 - **Длительность:** 1:56 - **Просмотры:** 37,022 ## Описание This clip is from episode #379 - AMA #79: A guide to cardiorespiratory training at any fitness level to improve healthspan, lifespan, and long-term independence In this clip, they discuss: - VO₂ Max Declines With Age – Notes that aerobic capacity naturally falls over time, while the oxygen demands of meaningful activities stay the same - Using Personalized VO₂ Max Graphs – Describes a visual model that charts age on the x-axis and VO₂ max on the y-axis to show an individual’s current aerobic capacity - Modeling the Expected Rate of Decline – Shows how the graph projects a “baseline” trajectory of VO₂ max loss with consistent training over time - Mapping Activities to VO₂ Max Requirements – Lists specific activities a person wants to maintain and identifies the age at which each becomes no longer possible based on trajectory lines - Aiming for the Fitness of Someone 20 Years Younger – Suggests that reaching the top 1–2% of individuals two decades younger allows almost any long-term activity goal to remain possible into one’s 90 -------- About: The Peter Attia Drive is a deep-dive podcast focusing on maximizing longevity, and all that goes into that from physical to cognitive to emotional health. With over 90 million episodes downloaded, it features topics including exercise, nutritional biochemistry, cardiovascular disease, Alzheimer’s disease, cancer, mental health, and much more. Peter Attia is the founder of Early Medical, a medical practice that applies the principles of Medicine 3.0 to patients with the goal of lengthening their lifespan and simultaneously improving their healthspan. Learn more: https://peterattiamd.com Connect with Peter on: Facebook: http://bit.ly/PeterAttiaMDFB Twitter: http://bit.ly/PeterAttiaMDTW Instagram: http://bit.ly/PeterAttiaMDIG Subscribe to The Drive: Apple Podcast: http://bit.ly/TheDriveApplePodcasts Overcast: http://bit.ly/TheDriveOvercast Spotify: http://bit.ly/TheDriveSpotify Google Podcasts: http://bit.ly/TheDriveGoogle Disclaimer: This podcast is for general informational purposes only and does not constitute the practice of medicine, nursing, or other professional healthcare services, including the giving of medical advice. 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For a full list of our registered and unregistered trademarks, trade names, and service marks, please review our Terms of Use: https://peterattiamd.com/terms-of-use/ ## Содержание ### [0:00](https://www.youtube.com/watch?v=0MX-AJQ1utA) Segment 1 (00:00 - 01:00) None of the V2 max numbers that you see on wearables are actually measuring anything. They're estimating V2 max. And the first problem is that they're not actually measuring gas exchange. So if you don't if you can't measure gas exchange, you can't estimate V2 max accurately. So they rely on algorithms that try to infer gas exchange from heart rate, from pace, power, and then they combine them with demographic variables and you know things like age, sex, and weight. The second problem is the accuracy of the data that they're using. And since virtually all wearables use optical sensors um on the wrist, um they're kind of estimating heart rate, which would be one of the most important variables here anyway. And those readings alone can drift significantly. And I I went down the rabbit hole on this a year ago of looking at every single one of the wristbased heart rate monitors and I was blown away at how um how inaccurate wristbased uh heart rate monitors were. Again, it directionally they were reasonable, but you know, for a number like this where improving it by, you know, 5 to 10% matters, I just didn't feel like it was worth mcking around. Um the final point that I struggle with a lot of these risk based things is you don't really control when and how the estimate is taken. So a lot of these wearables, although not true for all of them, don't let you initiate a true V2 max test. So they're kind of estimating or generating an estimate auto automatically from the data you collect during your outdoor workouts. If you're doing a lot of zone 2, then they're falsely going to depress your estimate. So, I guess long and short of it is if the watch tells you your V2 max is 52, it could be 42, it could be 62. And I've seen that big a swing uh on the devices. So, I just don't think it's worth it to rely on that solely. And looking then at what should someone's goal for their V2 max --- *Источник: https://ekstraktznaniy.ru/video/49032*