From my own experience, going at ~15%+ above my estimated FTP (based of 95% of my best 20min MAP of the previous six weeks) for ~5mins is very feasible if my legs aren't fatigued. As an example, back on May 21st my estimated FTP was 262W, having already climbed another cat4 in 6mins21secs @312W I then averaged 316W over 7min6secs up the next cat4
https://www.strava.com/activities/2385831153/analysis/4198/4624 . I'm surprised at how few riders have gone quicker up either so far this year, but each Strava rider can choose when and where they really push themselves, I'm certainly under no illusions of thinking I'm anything like a top10 hill climber around Warnford... It simply means very few riders younger/stronger/lighter/fitter than I have given those two hills an all-out effort.
Shame your TT was not a few minutes longer to reach 20mins, if you had held that 273W then you could legitimately increase your estimated FTP to 259W, good effort though... Keep on pushing the envelope!
My 2019 summer season is still in tatters, knee niggle coming and going; weather has either been too hot or too wet; often feeling mentally very fatigued and not being able to decide a ride plan for the periods of time I have to do a ride (which wasn't helped by still being fixated on trying to hit 500k feet of climbing from indoors and outdoors until very recently); so I've rarely headed out to around Butser Hill, already used up my free 25Km free trial on both Zwift accounts for August and seriously thinking on subscribing for at least a month.
I increased my estimated FTP by a whole 1W the other night to 251W, after fudging my FTP in Zwift to 275W before doing Emily's Short Mix, go me!
https://www.strava.com/activities/2596784560/analysis/474/1676
Great insight and data as always Steve, although others may gloss over I really do enjoy reading your insights and observations. Probably as they're quite similar to mine! We probably go more in depth than we should, but numbers and data are a large part of cycling for me so get quite a big of enjoyment from analysing it all!
I've been quite fatigued for several weeks/months due to the little man & warm nights, but I think I must have also acclimatised to it a little. Even now I'm averaging 6-7 hours sleep a night maximum. Some might even be closer to 5 hours and I feel groggy as hell when first woken up (by the mini-human alarm), but within 10 minutes and a coffee I'm pretty good. With the group ride on saturday (I utterly emptied myself) I am still carrying some of the load from, so my legs really have no rights to be feeling as good as they do, along with having a seeming increase in power. When I should be needing recovery I seem to be thriving at the moment. But I really need to rest, the lack of sleep/rest just means I'm more susceptible to any illnesses little man brings back from nursery and illness is what's really killed my fitness and form this year (always seem to be recovering). You've been hit hard with it this year too... Without being able to blame a mini germ factory!
Yeah shame about the TT length not making it a 20 minute effort, equally, glad I entered CAT B and not C for it as seeing it was short (10km) I knew I'd be over CAT limits. So no worries about using my newfound power to really put down a marker. I'm fairly sure I could've sustained the average (
if I trim off the start & end, that's 267W) for 20 minutes.
Did 2 minutes cooldown, then 3 minute gap (easy spinning) before the following race started and my
10 minute 245W effort. Even that didn't feel like a proper threshold effort like the TT, more of a paced hard-tempo effort.
TLDR; really need to do that 20 minute test!
Can you help a novice understand this?!
Reading about FTP, I thought it was meant to be measured in W/kg. Are your figures 100*W/Kg? Is that the more common measurement?
In the first Strava link your power output is 207W - are you using a difference source for the wattage figures to extrapolate out to your 270W FTP.
In the second your Strava wattage is only a bit less (184) than in the first, and yet you say your FTP was much lower - 200.
Sorry for the questions. As I say, I'm new to this FTP data and interested in understanding it better so I can start measuring my output.
'FTP' is just a power figure. An FTP test in the general sense we talk about is a 20 minute threshold 'maximum' effort. You then calculate 95% of that figure, to give a rough figure to what you should be able to sustain over an hour. Some riders may even be able to ride at more than 95% over the hour, there are hour long FTP tests. But the fatigue and time they carry/take (including warm up & cooldown) most riders find the figure from a 20 minute test accurate enough.
W/KG Steve has covered well, in the sense of CAT's on the road and virtual racing like Zwift, then the figure is your FTP/KG. So for me this season I've been using 250/76 to give me 3.3w/kg. Firmly a CAT C and quite a competitive one at times. But bear in mind that's my maximum. The majority of Zwift
races you don't ride that hard, it's all efforts and recovery before a sprint. I'm quite good at a long sprint and rolling terrain, so generally try and break away/close gaps and go long. But Zwift that really doesn't work well at all,
I just can't peak high enough to beat real sprinters so have to try something.
Usually find myself leading others out.
First Strava link should show my
average power at 274W. The ride back with the Chariot was at 200W. Those are power figures, not w/kg.
If it was w/kg then the first would be ~3.4w/kg (me 76kg and backpack 2/3kg) with the second something ridiculously different around 2w/kg (I'm towing a 4-5kg chariot with 15kg child, me 76kg and 2/3kg backpack). I only called it FTP in the first as that was my previous FTP figure, when I weighed around 74kg (3.6w/kg!), trained more and rode more! Had a little boy in 2017 and it's really killed my cycling lol
I thin your confusion comes from getting muddled over power, w/kg and FTP when they're all related. Average power over an hour is generally an FTP (wattage) figure. Then w/kg is generally that figure divided by bodyweight.
