Question for those who have the Stava Premium - how accurate do you think their fitness and freshness rating system is? Personally, I think it’s garbage, and weighted too heavily towards overall volume. I PR’d this past weekend at the 70.3 distance, and their fitness and freshness rating had me very low compared to in the past.
Garbage. Even when I was meticulous for a 6+ month period with accurate hrm and power for alll run bike workouts it kept saying I was losing fitness. Went and set my lifetime Usat score pr at the end of it, at which point I’ve decided it’s worthless to me. A shame as it would have been really helpful if it did mirror my performance and condition but it just didn’t at all.
The one computed data metric that does seem to correlate decently well r me is my garmin vo2max. The higher it goes the better my performance and condition.
I think it’s garbage but my best fitness of the last few years aligns well with it.
For me it skews towards time at L3-L4 hr.
Depends on how accurate your HR data and zones are. There is some variations that skew it like any other metrics based on HR. But the patterns seem to match fairly closely to tss/training peaks for me, though I use training peaks data over strava’s.
Agreed with others here, pretty garbage. Doesn’t capture swims unless you rate the effort. On the bike and run it underrates time in Z2. Was higher when I knew less about training but much faster now.
Also their Weighted Avg Power metric is lame, much prefer NP.
Also their route creation tool will get you killed 
That all being said I of course pay my premium dues. It’s a small tax for a hobby I love.
Strava could be so much better than it is.
My understanding is that it uses the same formulas as TP for CTL, ATL, TSB. Is that not the case?
I was going to say I thought Strava was garbage and TP is better. I cancelled my premium Strava for TP. I worked to ensure my zones, weight, mHR, etc. we’re all set the same on both. The Strava and TP numbers were quite different for me.
Do you have documentation that shows they’re the same calculation?
All of my workouts are in Zwift or my bike(s) with a power meter. It tracks with WKO5 and TP pretty well when my FTP is realistic/set “correctlyâ€. When it’s HR only, I don’t trust the numbers. Not sure if I’d trust it for running, swimming, or anything else that doesn’t have a power meter. Then again how many people are blowing money hand over fist for questionable things like whoop?
I don’t my question was requesting the same info.
Purely anecdotal but for the brief period I had across through a premium subscription the curve seemed to match my trimps chart in golden cheetah very well
If you put garbage in, you get garbage out. Get you HR zones dialed correctly and it should be generally useful. Just have to remember everyone is different physiologically - muscle fiber type, current fitness for stamina vs power vs speed vs vo2 vs LT, etc.
In practice my best races have seemed to come at relatively high points, and Ironman or 70.3 races cause a spike in my Strava Fitness score.
Coincidently, I’m pretty sure I would have gotten a 70.3 PR in the same race and that race would have put me up to a new high on the Fitness tracking score, but instead I’ve just been watching is tick down. Donw 31 points at this point, although it seems to be ticking down just a little bit slower now.