I really like the analytical side of Xert and I think most of their modelling is spot on. But the training planning is weird. Perhaps some of it is tied to Lower Threshold Power being modelled as something you can do endlessly without getting fatigued.
But, is there a true physiological restriction to do LTP, LT1, et al all day?..(provided you fuel appropriately and get your muscle-skeletal system prepared for that.)
Good points from both of you.
The LTP that Xert currently detects is within my zone 3. Now, I do feel I have a better base this season than I have had like forever so from that perspective it makes sense. Still, itâs certainly not all-day power - even with the right fuelling. Feels more like my âmarathon paceâ that I would be able to sustain for some hours.
But their definition suggests that LTP is the lowest threshold once all âEndurance Energyâ (not even sure I understand what that is) have been spent. LTP in some ways sounds like LT1 but then doesnâtâŚ
Probably a discussion I should have on another forum ![]()
Thanks
So you use LTP from Xert to do a lot of endurance miles? (analogous to what folks have been doing with LT1 high Zone 2 training). Just trying to understand what you mean.
I felt this way a few years ago and sort of still do. Iâm ok with them not calling it LT1 because itâs not what theyâre measuring. That makes sense. What Iâm wondering is how does Xert suggest you use this number. Never quite figured that out before I gave up on it.
I have a friend paying KM $450/month and heâs convinced by KMâs pov. I understand how itâs usually âtoo highâ but some people do well in 20-60min (myself included). TR is big on SS and integrated the ramp test (old as dirt btw) to compute a value that makes all the workout workâŚ
What you define as ftp shouldnât matter so much as performance ability. If you tend to score especially high on the ramp test and are not much of an ftp rider youâre left with bragging rights and not much to show for it.
With a TR defined ftp, how many can ride an hour at 95%? What about 100%?
Group workouts are interesting data to see how your friends respond⌠itâs really all over the place (due to gains, old ftp, inflated ftp; who knows)
Nailed it! Also the body systems respond on zones (follow your model of choice) but itâs for sure not +/-1% or +/-1watt.
I wonder if the higher failure rate was from the vo2 workouts or from the threshold ones. So just because the ramp test has a lower failure rate doesnât mean itâs more accurate for determining ftp. Vo2max workouts from a MAP test should be pretty close to your abilities.
Considering MLSS or FTP is an exercise intensity that can typically be sustained for 30 to 70 minutes, what is the fascination with 60 minutes other than pushing it to duration someday while covering 40km in distance?
The problem is the compounding load with an over estimated FTP, the failed workout is just the tip of the iceberg.
Except by those who equate âabout an hourâ to exactly 60 minutes.
I think everyone who is so sure the ramp test is inaccurate and theyâre so interested in their exact true FTP should go to a lab and test blood lactate until they get it just right.
Iâve heard you guys discuss the motivations for the ramp test and AT on the podcast, read about it in your blog, and you have given more details here than ever before and I bet there will still be ppl basically questioning your honesty and integrity.
Itâs one thing to say âI donât think your product works as well as it shouldâ and another to say ânope thatâs not why you created itâ.
The way tr designs most of their training weeks youâll have compounding load issues even if your ftp is set correctly. Theyâre almost the definition of doing too much hard work, but you canât do the really hard work because youâre too fatigued from the kinda hard work.
Instead of fixing that issue, they just lowered the starting level, but the main issue is still there. After noob gains the plans will be a lot of kind of hard work, but now you might only be doing kind of hard vo2 as well.
So what Iâm saying is the statements from tr arenât actually supported by the failure rate, since the failure rate is confounded by several factors.
The ramp test + AT set ftp to an appropriate level for higher success rate for completing their plans, but that doesnât means the plans are optimal.
Am I the only one that actually knows my FTP just by intuition? I mean you should be able to feel in your legs whatâs sustainable aerobically for a longish duration.
Honesty is important!
I do think PL < 3 or 4 is misleading, I understand there will be some people that refuse to adjust their inflated FTPâs - hence TR providing these workouts, also itâs useful for days with less time, or days that you are carrying fatigue. But if you canât do PL 3+ Threshold, its probably time to dial it down 5 watts, which honestly doesnât matter, its just a number! And it feels way better nailing workouts than hanging on for dear life.
Ramp test protocol is great for beginners and casual TR users as their FTP will likely change very quick anyway, so an accurate test isnât as important!
Or maybe Iâm wrong - do you really need a test to know your FTP (if youâre not a complete beginner)?
I think the biggest problem is that too many people choose mid and high volume plans. I agree those can cook a lot of people.
But if you choose low volume, use AT and just supplement with z2 rides I think it works for most people. A key point is though if you are supplementing with group rides, they are probably adding extra intensity. Swap the group ride for one of the intense workouts.
On MV specifically, I think the added Sunday SS ride hurts a lot of people. Which is why they toned it down. Doing the alternative endurance ride recommend is better. For me the optimal plan is MV but sub in the Sunday long ride. The intensity is actually lower than LW. And I can skip Wednesday if I need to. And swap the Saturday workout for a group ride if I want.
Personally, I think itâs better to test. I donât believe you guys who say you can magically feel your FTP unless you are doing frequent, longer threshold or 95% SS intervals. And if you are doing those, itâs basically like you are testing.
Last year, my FTP peaked at the end of July. I did hard group rides and mid-week maintenance intervals through September but my FTP drifted down by 25 watts by January 1st. I think that is pretty normal as you canât stay at a peak forever. How many people can feel it without doing efforts that test it?
Thatâs kind of the problem though, the mv and hv are still too skewed towards the higher intensity side. The hv plans look like they are trying to balance the demands better than before and use more variety so kudos to the tr team for that. The team has said why it is this way, so that is the better business decision if it keeps people with tr, Iâm not sure if I can blame them if too many users donât want to do endurance rides.
KM protocol is just a protocol. He uses pdc and inflection point on the curve. Some people can ride 35min@FTP other 60min. And his protocols have different length for different athletes.
If you can hold the power for 35min - do extensive ftp training, if you can ride 60 - try on ftp or other limiters. You should be finaly able ride around 60 min at FTP but itâs not necessity for everyone. 40min will give you also good number for training.
I think we are on the same page. The problem is people canât help themselves and want to do more and more. And then burn out. My guess would be 75%+ of the TR users would be optimized in a LV plan with supplemented endurance rides if they have the time. Iâd be interested to see what % of users choose which volume of plan.
I the TR team is doing a good of balancing the at times opposing goals: making people faster and keeping people on subscription! My recommendation is that LV should be the default setting and users have to actively select MV or HV, with appropriate warnings/caveats. I think asking people how much time they have to train leads many to get slotted into MV and HV. And anyone over 50 should not be given the choice to select MV or HV
unless they do MV with the Sunday ride being the long ride.
Isnât it on TRâs feature todo list to factor outside rides into AT?