By that i mean, my ftp changed on tuesday last week. I even got an email about it (which i really like… saying what PRs i’ve broken and what not)…but then when i checked this morning, i had barely any time in Sweet Spot so i wondered what happened… turns out the FTP hadn’t changed. I changed it manually and now it reflects proper time in zones but Is there a way to have it done automatically? (I don’t mind the manual change, takes literally 3 seconds…but still)
Intervals.icu keeps estimated FTP separate to manually entered FTP and uses manually entered FTP for intensity, training load etc… So when it says your FTP has gone up then you need to decide if you are happy with that and update your FTP to match.
Power meters do play up sometimes (though Intervals.icu does try to fix spikes) and people have lots of different opinions on how to estimate FTP. So this is a safe way to manage it.
Also I am going to be adding a separate “indoor” FTP setting soon.
Brilliant! I just used the new warm-up/cool-down sliders to fine-tune how aerobic decoupling is calculated from the workout and it’s intuitive and simple to use. Well done!
Hey @davidtinker, just wanted to chime in and say thank you very much for all the great work you’ve done with the site. It’s really incredible how useful and well done it is for a completely free to use program! You’re the man.
I wanted to toss in an idea for a calculated Vo2 Max estimate somewhere on the site. I know Garmin has an algorithm, as do other apps like HRV4TRAINING, so I’m sure it could eventually be added to utilize all the HR and power data already being collected. The estimated values are often somewhat accurate, and it is cool to see how they change as fitness evolves.
Thanks. I have seem a simple formula to calculate v02 max from FTP but it would be better to try derive it from the HR and power data. Need to find out how to do that. Firstbeat supposedly do but its proprietary. I need something in a published paper that has been validated against lab measured v02 max data.
David: a quick squizz in google scholar gives:
SWAIN, D. P., B. C. LEUTHOLTZ, M. E. KING, L. A. HAAS, and J. D.
BRANCH. Relationship between % heart rate reserve and %
VO2reserve in treadmill exercise. Med. Sci. Sports Exerc. 30:318–
321, 1998.
Swain, David P.; Parrott, James A.; Bennett, Anna R.; Branch, J. David; and Dowling, Elizabeth A., “Validation of a New Method for Estimating VO2max Based on VO2 Reserve” (2004). Human Movement Sciences Faculty Publications. 67.
# Comparison Between Direct and Predicted Maximal Oxygen Uptake Measurement During Cycling [Matti Santtila, FDF](javascript:;), [Keijo Häkkinen, PhD](javascript:;), [Kai Pihlainen, MSc](javascript:;), [Heikki Kyröläinen, PhD](javascript:Military Medicine , Volume 178, Issue 2, February 2013, Pages 234–238, https://doi.org/10.7205/MILMED-D-12-00276
I’m a triathlete also wanting to track decoupling & EF for runs. Is this something that may be feasible in intervals.icu in the near future? I’ve been doing Zwift running recently and it appears only my overall avg run pace is carrying over to intervals.icu. (I realize the site is currently specifically for cycling.)
I’m also wondering if there’s an easy way to track EF and Decoupling over time through the site—or is best bet to go into each activity and manually record info to a spreadsheet for tracking?
Thanks so much for all that you do—I’m a big fan of the site and appreciate all of your work!
Military Medicine , Volume 178, Issue 2, February 2013, Pages 234–238, 