Hello everybody,
I have just started biking and my FTP is at the moment way too low (I run some tests).
As a result I am not able to input 70 as value in intervals, as the minimum value supported is 100.
Is there any workaround for this?
Thanks in advance
Cheers
I guess @david can fix that. But may I ask how you arrive at an FTP of 70? Injury or something like that? No problem if you do not want to share that info, I’m just curious 
I guess I’m just new into the game and need to exercise more
I run the tests on both zwift and trainerroad and the results are the same. Also taking into considerations road activities the estimate power (I don’t have a power meter) seems to be in line.
But when you run those tests, do you go all out during the 20 minutes, or whatever the test duration is, i.e. you are about to throw up when done? It’s hard to tell how old you are, what your posture is etc, but 70 just seems very low.
yes, but as said this value is also in line with power curves calculated by strava and the estimated ftp calculated by intervals based on several workouts
You should probably do what suits you best
Strava’s estimates are not bad, but dependent on several factors, like your weight setting. But then, if you cycle 30 kph with a tail wind, it will give you 200 Watts, while when you cycle at 15 kph with a head wind, it calculates 60 Watts. However, overall or on average, the calculation is not that bad.
But a true FTP value can only be determined by an all out test and I’d be surprised if you really had an FTP of 70 Watts, which probably is in the range of a 10-12 year old, or a not very well trained female cyclist. My wife is not that well trained, but she scores 135 (at 57 years young)…
Also, I cannot help you by looking at your rides, because your profile on Strava is (semi) public, but your activities are private… I was just curious to see if I could deduct anything from it 
The only thing I can deduct is that your average is 16.5 kph, with some climbing and including Zwift rides, where speeds are calculated generously.
What kind of setup do you have? I mean, what type of smart trainer, or other way to connect to Zwift?
On a windless, straight road 70w it’s about 20-22 km/h
https://www.gribble.org/cycling/power_v_speed.html
Yes, but Strava doesn’t know wind, or whether it’s a head or tail wind. It generally calculates higher Watts at greater speeds, regardless of wind. If you have a power meter, this becomes totally different and - in your example - you will generate 60 Watts with a tail wind and 180 Watts into the same head wind and achieve the same speed both ways. Strava would calculate the exact opposite, which is why I said, on average, the calculations are not bad, unless you do not ride return trips and go only one way.
I’m just trying to help - if you never go all out, until you drop, you can follow a program, but you will not gain a lot of fitness. Or at least not as much as you could have. Do you monitor your heart rate? Does it ever get above threshold, where you find it difficult, if not impossible, to speak and gasp for breath?
Anyway, if you’re happy with that and feel good with what you’re doing, ask @david to allow 70 Watts for your FTP.
I use Elite Qubo Fluid ( https://www.amazon.com/Elite-Qubo-Fluid-Home-Trainer/dp/B01F1HBEA6 ) with Wahoo speed and cadence sensor. FTP seems aligned with both Trainerroad and Zwift measures so I can assume it is right and that I am not selecting the wrong trainer when setting up the app.
I confirm that in flat courses on Zwift I get around 20-22 km/h.
Which is what you asked for in the first place, so I should maybe stop bugging you 
Yes I do monitor HR and it goes up when under pressure, see for example my FTP test done one month ago:
or a Zwift workout done on Monday:
where the first row is power and the second one HR rate.
Hehe well I get in the end this will be the solution, but it totally appreciated to exclude other issues
I just got back from an outdoor ride (https://www.strava.com/activities/3335914366) but out of curiosity, I got on my Tacx Neo and put it at 70 Watts. I honestly didn’t think I would move at all, but lo and behold, it calculated 22 kph
That you get to a HR of 150 at that level, is probably because I have never realized cycling could be that hard (at those speeds). Also, you are definitely a lot younger than me, because 185 bpm would kill me
I have changed the validation to allow FTP down to 50w.
Ah sorry I jumped the gun. I will deploy the back-end fix tomorrow morning (GMT+2). There are lots of people on the site at this time.
