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5 watts/kilo in real terms.......?

neilr4neilr4 Posts: 161
Hi all,

Up until 2 years ago I hadn't done decent exercise in 12 years and it had been 20 years since my last race!!

Into 40''s and middle aged spread had taken over so time to do something about it whilst I was still able. I'm now averaging 10 hours a week over 5 days including an evening crit during the week where we average 40kph and can mostly get top 10 mostly because of experience (drafting) and positioning.

I took a test in februari to work out my training zones and according to the figures (vo2 max and w/kg) I should be riding in a higher catagory?! Had a chat with a couple of guys I race with and they beat me with lower max output.....

Can anyone shed some light on how this is possible? OK I'm about 6 kilos above my ideal racing weight but surely that shouldn't make a huge difference in a crit for 1 hour?
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Posts

  • Where did you get 5 watts from?
    I'm sorry you don't believe in miracles
  • webboowebboo Posts: 3,829
    If they are beating you with lower outputs maybe your positioning and experience is'nt as good as you think it is.
  • neilr4neilr4 Posts: 161
    Where did you get 5 watts from?

    5 watts per kilo..... 77kgx5w=385 watts @ max heartrate
    'REMEMBER SOME PEOPLE ARE ALIVE
    SIMPLY BECAUSE IT IS ILLEGAL TO SHOOT THEM'
  • neilr4neilr4 Posts: 161
    Webboo wrote:
    If they are beating you with lower outputs maybe your positioning and experience is'nt as good as you think it is.

    My experience and positioning can get me onto 3rd or 4th wheel in last corner with 150m to finish but I get passed on finishing straight!!!
    'REMEMBER SOME PEOPLE ARE ALIVE
    SIMPLY BECAUSE IT IS ILLEGAL TO SHOOT THEM'
  • sungodsungod Posts: 13,777
    neilr4 wrote:
    Where did you get 5 watts from?

    5 watts per kilo..... 77kgx5w=385 watts @ max heartrate

    ftp - average power over an hour - is the normal reference for the general w/hr calculation, not mhr

    what power do you average over an hour?
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  • sungod wrote:
    neilr4 wrote:
    Where did you get 5 watts from?

    5 watts per kilo..... 77kgx5w=385 watts @ max heartrate

    ftp - average power over an hour - is the normal reference for the general w/hr calculation, not mhr

    what power do you average over an hour?

    viewtopic.php?p=19936054#p19936054
  • zefszefs Posts: 484
    It's not only about watts/kg, the other riders may had done better energy savings over the race for example or your were in a worse day than them.
  • w/kg has nothing to do with max HR
  • w/kg has nothing to do with max HR
    It sounded more like a power measurement at VO2peak than HRmax.
  • DeVlaeminckDeVlaeminck Posts: 7,306
    neilr4 wrote:
    Webboo wrote:
    If they are beating you with lower outputs maybe your positioning and experience is'nt as good as you think it is.

    My experience and positioning can get me onto 3rd or 4th wheel in last corner with 150m to finish but I get passed on finishing straight!!!


    If they are passing you in the sprint it'd be interesting to have some real world data to see what power you are putting out for how long in those sprints. If your positioning is good then it's unlikely you are mistiming your efforts and assuming you aren't massively unaerodynamic lack of power over sort of 15 seconds sounds the most likely deficiency. it may be that you aren't training for the kind of racing you are doing.
    [Castle Donington Ladies FC - going up in '22]
  • buckmulliganbuckmulligan Posts: 1,031
    edited August 2016
    As others have said, power numbers are conditional on context and "Power @ HRmax" (if that is indeed what your numbers are) isn't a particularly commonly used context.

    Most people quote their power output (either raw Watts or Watts per kg) as FTP, or the power output that you can sustain for roughly an hour. Your "Power @ HRmax" (or VO2 max) figure is going to be way higher than this.

    This is a typical chart of the maximum power output (y-axis) a rider can sustain for a given period (x-axis). You're taking your value from the left-hand side of the chart (i.e. short duration) and comparing yourself to other people's values from the right-hand side of the chart (i.e. long duration):

    PowerDurationCurve1
  • imposter2.0imposter2.0 Posts: 11,384
    Also, power at HR max is only going to be sustainable for a handful of seconds at the most. As others have said, average power or FTP is a more useful guide. You're unlikely to be able to hit peak power (regardless of how it is measured) at the end of a race anyway, and sprints are generally won by whoever has the freshest legs, or the best position coming off a wheel, as opposed to the highest theoretical numbers.
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