Power meters · Public discussion

Plausible?

Started by Steve_B · · Last activity · 10 posts · 1,419 views

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Power meters
Published
28 January 2008
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30 January 2008
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Steve_B
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  1. A bit of a long story behind this but I'll cut to the chase.

    Assuming a rider's FTP is properly assessed. On a day when motivation is average and TSB is ~0, should this ride (in the order presented) be possible or should the FTP value be questioned?

    1. 15 minutes warm up
    2. 60 minutes at 96% of FTP (VI = 1.0) (challenging but not a huge struggle to finish)
    3. 10 minutes easy + a few minutes off the bike to refuel
    4. 15 minutes at 100% FTP (VI = 1.0) (again, challenging but not a huge struggle to finish)
    5. 10 minutes cool down.

    I'm thinking that a solid hour at 96% should make it difficult to do the 15 minutes at 100% afterward. I know when I do a solid hour at FTP (and I've got the FTP right), there's no way I could do the additional 15 minutes at yet a higher IF afterwards.

    Thoughts?

  2. Definitely possible, IMO. I'm not sure about the PEs ("challenging but not a huge struggle to finish"😉, but I think it could be done without a herculean effort.

  3. It depends. After too easy recovery period from hard training period + new defined FTP = maybe not possible. After good long stage race + few days proper recovery = way possible.

  4. Steve_B said:

    A bit of a long story behind this but I'll cut to the chase.

    Assuming a rider's FTP is properly assessed. On a day when motivation is average and TSB is ~0, should this ride (in the order presented) be possible or should the FTP value be questioned?

    1. 15 minutes warm up
    2. 60 minutes at 96% of FTP (VI = 1.0) (challenging but not a huge struggle to finish)
    3. 10 minutes easy + a few minutes off the bike to refuel
    4. 15 minutes at 100% FTP (VI = 1.0) (again, challenging but not a huge struggle to finish)
    5. 10 minutes cool down.

    I'm thinking that a solid hour at 96% should make it difficult to do the 15 minutes at 100% afterward. I know when I do a solid hour at FTP (and I've got the FTP right), there's no way I could do the additional 15 minutes at yet a higher IF afterwards.

    Thoughts?

    Ignoring the 'few minutes off the bike bit' for the core 1:25 workout I get an IF around 0.94 ... that honestly doesn't seem exceptional unless perhaps all performed indoors in a poorly ventilated room etc.

    I've done plenty of indoor workouts like:
    40min @ 100%FTP
    5min @ 55% FTP
    15min @ 103% FTP

    Core workout: 60-min @ 0.99IF

  5. FWIW, I regularly ride over 2 hours at an IF greater than .94 on a rolling/steep courses. So it seems plausible to me that someone else could do what you did (I get bored at VI=1 but to each his own).

  6. Steve_B said:

    A bit of a long story behind this but I'll cut to the chase.

    Assuming a rider's FTP is properly assessed. On a day when motivation is average and TSB is ~0, should this ride (in the order presented) be possible or should the FTP value be questioned?

    1. 15 minutes warm up
    2. 60 minutes at 96% of FTP (VI = 1.0) (challenging but not a huge struggle to finish)
    3. 10 minutes easy + a few minutes off the bike to refuel
    4. 15 minutes at 100% FTP (VI = 1.0) (again, challenging but not a huge struggle to finish)
    5. 10 minutes cool down.

    I'm thinking that a solid hour at 96% should make it difficult to do the 15 minutes at 100% afterward. I know when I do a solid hour at FTP (and I've got the FTP right), there's no way I could do the additional 15 minutes at yet a higher IF afterwards.

    Thoughts?

    Definitely possible.

  7. rmur17 said:

    that honestly doesn't seem exceptional unless perhaps all performed indoors in a poorly ventilated room etc.

    It was indoors but well ventilated and cooled as well.

    Animator said:

    I get bored at VI=1 but to each his own.

    I hear you. The last time I did a full hour effort that hard was in late November and it was VI>>1.0, IF~1.0 and on hilly terrain. It was much more exciting than the trainer but I was trashed after that and I barely made it home.🙂

    Ok, so the consensus is "plausible". I was hoping that my FTP assessment was a bit low (for this and other reasons too) but I think that perhaps that's a bit premature. At least I seem to have gotten through my annual "trainer adjustment period" where I can't seem to focus for more than 10 minutes at a time.

  8. Steve_B said:

    Ok, so the consensus is "plausible". I was hoping that my FTP assessment was a bit low (for this and other reasons too) but I think that perhaps that's a bit premature.


    No, I think the answers indicate that the workout is possible for a given FTP. If the FTP is underestimated, then it becomes even more plausible. IOW, if it's you that we're talking about, then you FTP is probably correct or slightly *low.*

  9. frenchyge said:

    IOW, ... then you FTP is probably correct or slightly *low.*

    Yes, I agree.

  10. rmur17 said:

    Ignoring the 'few minutes off the bike bit' for the core 1:25 workout I get an IF around 0.94 ...

    In fact, the IF of the ride up to the start of the second interval was only 0.89 and after the second interval, 0.91. When you look it that way, both of these are very managable for an hour and a fraction, of course. I guess I forgot to look at it that way and just immediately assumed that I ought to be too tired after the hour.

    Thanks everyone.

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