New BMR TDEE tracker thoughts

beautyh2t
beautyh2t Posts: 18 Member
edited November 2024 in Social Groups
Hello all!

Heybales I have loved your spreadsheet for calculating these numbers more accurately but intirgued on what people think of the new site that seems to be doing the rounds?

https://www.supertracker.usda.gov/bwp/index.html

http://www.runnersworld.com/weight-loss/biggest-weight-loss-myth-revealed I dont know enough about the maths to know if it is of use!

Thank you!

Replies

  • heybales
    heybales Posts: 18,842 Member
    I liked it - it is realistic, except perhaps for putting a time-based goal in there - which is usually fraught with unneeded stress when it's not met, and still gives people the ability to make something unreasonable and probably unsustainable.

    I don't like that it still doesn't distinguish exercise time - what is several hrs weekly? And is several hours of walking, running, or lifting - because obviously the differences could be major there, even averaged out daily.

    Comes up with the same average daily MET activity factor as other tables and my spreadsheets.

    The study that lead to the 7000 as better estimate - well, if you take people using memory based meal logging and little to no measurement methods used for actual sizes, and poor estimates of exercise intensity - then I'm sure the 7000 more than makes up for the bad inaccuracies found in those logging methods.

    But take even a bad but honest logger on MFP - and I don't think that much inflation is needed to balance out the inaccuracies.

    I think plenty of shown with their own accurate logging and exercise that is decently estimated and daily activity tracker - that the 3500 was a whole lot more accurate than 7000 was.

    I think in context the 7000 could be applied prior to the days of easy MFP or other logging site use.
    I think now though, just going to cause some crazy goals.
  • retirehappy
    retirehappy Posts: 3,519 Member
    I put my numbers in the BWP, I don't see a lot of difference in that than what MFP is doing. Is it supposedly based on a 7000 calorie deficit?

    And I agree with heybales, the activity selection is not good. Besides, my 3 mph walk to the park, on the flat, is a lot different burn than my own 4 mph walks in the mountains. And they don't even say how many times a week, just over once a week.

    I can just imagine some people reading that 7000 as " OMG now I have to burn/or eat downwards to the point that I am at a 1400 calories deficit to lose 2 lbs a week."

  • heybales
    heybales Posts: 18,842 Member
    That site uses the 3500 method.

    The 7000 is a different article making the rounds. Let's see how many people attempt to sustain a 2000 calorie deficit now because they want 2 lbs weekly.

    Ya, that's shouldn't end badly.
  • beautyh2t
    beautyh2t Posts: 18 Member
    haha! too true! thanks for input team- in general though the numbers it is generating arent toooooo out of whack is that right?
  • jo_marnes
    jo_marnes Posts: 1,601 Member
    Mine are waaaay out of whack if you go with the activity level they state. At least 500 cals over for what I have determined to be my maintenance level (through years of figuring it out!)
  • heybales
    heybales Posts: 18,842 Member
    beautyh2t wrote: »
    haha! too true! thanks for input team- in general though the numbers it is generating arent toooooo out of whack is that right?

    I'm sure with some exercise it lines up very nicely.

    Same way someone that picks MFP's Lightly Active really ends up burning that many calories outside exercise on average.

    The figures are based on averages - and someone is likely right there.

    And then again depending on that bell curve - could be a whole lot no where near.
  • tigerblue
    tigerblue Posts: 1,526 Member
    edited July 2015
    The "supertracker" numbers generated seem to be pretty close to what actually happens with my body as far as intake. But the activity part seems to be a big guess with a lot of leeway.

    Oh, and the big point I get from the article is that there is no way to pinpoint exactly how big your deficit is, because of many factors, including adaptation. I would agree with that big point. But I think to take it very literally and to start trying to create a 7,000 cal deficit is going against the whole spirit of what is being said by the article.

    But that is just what I take from it.
  • retirehappy
    retirehappy Posts: 3,519 Member
    Well I do see the upside, you'd have to consume 7000 to gain a lb. >:)
  • mirrim52
    mirrim52 Posts: 763 Member
    That second article seems really flawed.
    It states that in 1 year "most" overweight people will lose half of the expected amount, but makes no mention of variables like compliance, consistency, etc. Do people lose less because they are sloppy with tracking intake? Do they gain weight back and therefore at the end of the year weigh more than they did at month 9?
    What’s realistic? According to Hall, in the first year of a new weight-loss program, most overweight people will lose about half the weight that the 3,500-calories rule predicts. In other words, over 12 months, the new rule is 7,000 calories = one pound. (The math changes slightly over shorter and longer periods of time, with few managing to lose weight beyond 12 months.)

    This is poor logic. Just because 3500 yields half the expected results for most people, does not necessarily mean that 7000 will result in one pound of loss. The article itself states that weight loss is not linear, so why are they using linear extrapolation for non-linear data?

    It would be interesting to see the source data, but I don't see a way to read that anywhere.
    As for the BWP, it is fairly close for me, but my calculations put me somewhere between active and very active. The year estimate is a ridiculous range for me. I am not very big, and it gives me a range that is 20% of my body weight!
  • heybales
    heybales Posts: 18,842 Member
    One of the articles had a link to the study.
    Self-reported intake with all the inaccuracies of end of day logging and estimated sizes eaten.

    Hence my comments above of what they probably truly discovered in their test group. Make it 7000 to merely balance out the inaccuracies otherwise obtained.

    Which says their logging really was bad. I'd give even a poor MFP logger better than that.
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