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I can't rise my HR above 92%HRm

Hi, recently I've started more training on a road bike with HR and power meter.
But I have always a problem to reach high HR, maximum i reach on a bike (road or mtb) is about 91-92%HRm.
You may ask how i know my max, I reached it on few occasions while running or on my road bike - but on a trainer (204bpm).
(FTP 273W - 3.8W/kg - from 20 mins test)
Outside I can reach >90%HRm in 2 mins, but it has to be near-maximum effort - 158%FTP avg from these 2mins (it's my current 2mins max. -431W)
or I can reach >90 on longer sustained effort, like 10 mins in Threshold power.

Last month I was doing VO2max intervals (in PZ5 - 105-120%FTP), but now I realised that maybe I wasn't pushing myself hard enough,
coz I wasn't reaching >90%HRm. I can 'easily' reach 85%, but later it starts to be real difficult, I mean, my legs will die first.
Is it normal?  (I know that everyone is a bit different)
Or should I try a bit harder?   (next time I'll try  hard-start intervals, to be closer to 90%, maybe at the expense of overall duration).
but definitely, more than 92%HRm just doesn't look like possible.
ah, another thing, I ride flats now :) (it could affect things a bit? but my HRm on a trainer I did on flats too, but final sprint had candence probably way above 100rpm, but i don't have any data from it)
my cadence above 105%FTP is 90-100rpm.

Posts

  • First.AspectFirst.Aspect Posts: 6,231
    What sort of terrain? I can personally only get close to max HR using all major muscle groups. Perhaps I'm a crappy cyclist, but I can only do this when climbing. Not necessarily out of the saddle, but I certainly need to be using my upper body. Perhaps sprinting is another way, if I could do it well enough.
  • webboowebboo Posts: 3,463
    I have never got near my max doing intervals. How ever going up hill especially if it’s hot I can get there.
  • imposter2.0imposter2.0 Posts: 11,258
    Running HR has no relevance to cycling. Some people hit a higher MHR on a trainer than on the road - for others, it's the opposite.

    If you're on the road, just use the highest HR number you have seen and set that as your max.

    But, if you have a power meter, then your HR is kind of irrelevant anyway.
  • wongataawongataa Posts: 923
    edited 1 May
    Your max HR is hard to reach and it isn't really a particularly useful number to know.

    You will only reach it if you are in the right condition. Any fatigue and it is unlikely you would get there.

    Why do you care what your max HR is?
  • bobmcstuffbobmcstuff Posts: 9,737
    I tend to find my HR is a bit lower on the road compared to the trainer, I think due to increased cooling outside. And lower again than running due to the extra muscle groups involved in running (I think that's pretty widely accepted).

    As above, it doesn't really matter if you have power.
  • smethleysmethley Posts: 44
    If you're on the road, just use the highest HR number you have seen and set that as your max.

    This.
  • pblakeneypblakeney Posts: 15,289
    Also, your max HR reduces as you get older.
    Sad, but true.
    The above may be fact, or fiction, I may be serious, I may be jesting.
    I am not sure. You have no chance.
    Veronese68 wrote:
    PB is the most sensible person on here.
  • Mad_MalxMad_Malx Posts: 4,226
    pblakeney said:

    Also, your max HR reduces as you get older.
    Sad, but true.

    And one day it will be zero.
  • pblakeneypblakeney Posts: 15,289
    Mad_Malx said:

    pblakeney said:

    Also, your max HR reduces as you get older.
    Sad, but true.

    And one day it will be zero.
    Even sadder. 😉
    The above may be fact, or fiction, I may be serious, I may be jesting.
    I am not sure. You have no chance.
    Veronese68 wrote:
    PB is the most sensible person on here.
  • Charlie_CrokerCharlie_Croker Posts: 1,277
    pblakeney said:

    Mad_Malx said:

    pblakeney said:

    Also, your max HR reduces as you get older.
    Sad, but true.

    And one day it will be zero.
    Even sadder. 😉

    Sad? Not really, it’s an inevitability of life

    Embrace it and live the life you have
  • itboffinitboffin Posts: 19,933
    pblakeney said:

    Also, your max HR reduces as you get older.
    Sad, but true.

    You sure about that I hit 202 on yesterday chaingang ride
    Rule #5 // Harden The censored Up.
    Rule #9 // If you are out riding in bad weather, it means you are a badass. Period.
    Rule #12 // The correct number of bikes to own is n+1.
    Rule #42 // A bike race shall never be preceded with a swim and/or followed by a run.
  • pblakeneypblakeney Posts: 15,289
    itboffin said:

    pblakeney said:

    Also, your max HR reduces as you get older.
    Sad, but true.

    You sure about that I hit 202 on yesterday chaingang ride
    In best Jim Bowen voice....
    Here's what you could have had in your youth.
    The above may be fact, or fiction, I may be serious, I may be jesting.
    I am not sure. You have no chance.
    Veronese68 wrote:
    PB is the most sensible person on here.
  • WheelspinnerWheelspinner Posts: 5,251
    itboffin said:

    pblakeney said:

    Also, your max HR reduces as you get older.
    Sad, but true.

    You sure about that I hit 202 on yesterday chaingang ride
    Uphill trying to keep up or downhill screaming in terror trying to keep up? 😀
    Open O-1.0 Open One+ BMC TE29 Titus Racer X Ti Giant MCM One Cannondale Prophet Lefty Cannondale Super V SL Cove Handjob Cervelo RS
  • davep1davep1 Posts: 797
    Running HR will always be higher than cycling HR, you're using a lot more muscles when you run.
    Also bear in mind the equipment you have to measure your HR might not be that accurate. Are you using the same piece of equipment to measure your HR when on the bike/on the trainer/on a run?
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