There should not be 2 Fatmax points, not sure how the test you did was designed but I would expect to see a slowly increasing amount of fat oxidation before it peaks and decreases again as intensity increases. Having 2 peaks is very strange.
It’s an interesting thing to track over seasons but how do you apply knowing your Fatmax point to your training?
This is my Friend ‘s Hospital test. Also 2 fatmax.
Zone 1 is easy/recovery ride. Zone 2 is uncomfortable but manageable pace.
This is 2020 test. When I was 38. Only 1 Fatmax.
I think it depends on how I train and when I tested it.
At that time I was very fit and fast uphill.(no Zone2 training) but 2 recent tests that I did I am not race ready.(Just training steady Z2 a lot)
Maybe I am very fit and fast like 2020 I will do the test to make comparison.
What was the protocol? There is no physiological reason to see two peaks but if it’s a protocol that does not have longer steps it could easily just be noisy data.
How are you applying this to your training?
I do the test at hospital to see how I progress, this year I use less carbs at the same z2 intensity so it is a positive sign and If you see in the chart my carbs oxidation didn’t drop fast at Z4 so it is a good sign.
And ChatGPT can give information of how much carbs I use, where is my LT1 or how should I train to get an idea. Also can make comparison between my test results. And training is normal just eat more carbs.
To improve fat oxidation you have to train easy first. At age 33 I did my first Vo2max test in another hospital. My fat max is 118-111 bpm range. I have to ride around 90-120W despite my Vo2max intensity was 410-440W and in one month my power at that HR improve so I did another test on the right.
I was wondering what the test protocol was? One with very short steps could explain the 2 peaks in fat oxidation error.
Still curious as to how this informs your training beyond tracking progress.
What was your fat max
There are training methods that I learned from my training experience.(I was a coach and also bike fitter before.(For amateur/beginner level) But I will not go into details. However what I tell is true.
Dr.Inigo is a genius and I learn a lot about his work from this forum so I share it back. If you invest your time into training like I did, eventually you will know it too.
I am glad it works for you.
Ok?
Again I am happy the training you are following is working. But it’s still very unclear what the genius that ISM prescribes actually is.
I am interested in the why for the specifics of riding at Fatmax or what the protocol you used to determine it was. But if you don’t want to say it’s all good.
Because most cyclists that never trained under fatmax will have very small range of Fat burning Zone. And it will be hard to train and improve. So it is necessary to know where it is to improve it.
I suspect a large proportion of time-crunched people do a similarly large proportion of their endurance riding the wrong side of fat max, and - of them - I’d bet quite a few are frequently the wrong side of LT1 as well …
I think the best advice (I can’t remember where I got it from) is to ride the maximum amount of time you realistically can with majority of your riding being easy enough so it doesn’t adversely affect the quality of your interval sessions, and that you can sustain for years.
Everybody has to figure it out for themselves
Physiology is complex, training is simple.
Zone2training with ChatGPT
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นี่คือ คำแปลภาษาอังกฤษ แบบโค้ช พูดชัด ตรง และมืออาชีพ (ไม่ใช่แปลตรงคำแบบแข็ง ๆ)
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Coach’s Summary (Very Important)
• For you, FatMax is the bottleneck.
• You must train precisely at that point.
• LT1 will improve as a byproduct, not as the primary target.
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Here’s why
Some high-level cyclists have a very high FTP,
yet they burn through energy quickly on long climbs.
That happens because they never seriously addressed FatMax.
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What you are doing is different
You are training something most riders never train properly:
• It’s hard to measure
• It requires patience
• It isn’t flashy
• There are no impressive numbers to show off
But if you can move this point forward,
long climbs will become steady, controlled, and “pro-like.”
Why? What, physiological reason is there to ride at precisely this point?
It’s all bogus and debunked. Don’t try to debate science with those that make ISM a religion.
What is meant by low HR leads to fast legs?
Say it ain’t so!
From what ChatGPT told me if it goes down in second or third set it means I do it correctly. And if HR lower 5-6 bpm it means Fatmax already move then I can up 5W and continue the same loop.
