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Body comp/BMR test

Discussion in 'Health & Body' started by SField, Aug 27, 2010.

  1. SField

    SField Senior member

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    What is the most accurate way to ascertain this? I know they offer it at many gyms but I hear that isn't accurate.
     
  2. why

    why Senior member

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    What is the most accurate way to ascertain this? I know they offer it at many gyms but I hear that isn't accurate.

    DEXA scan
     
  3. Viktri

    Viktri Senior member

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  4. AndyMcL

    AndyMcL Well-Known Member

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    The most accurate way to measure body composition will be by underwater weighing. However, that's a little harder to gain access to so if you're serious about it your best bets are either a DEXA scan or BodPod.

    Calipers and handheld/scale units (stuff they might have in a gym) have a pretty big margin of error.
     
  5. Gradstudent78

    Gradstudent78 Senior member

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    What is the most accurate way to ascertain this? I know they offer it at many gyms but I hear that isn't accurate.

    Pretty decent blog series about the different methods available:
    http://weightology.net/weightologyweekly/?page_id=146
     
  6. SField

    SField Senior member

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    And what about metabolic rate?
     
  7. Eason

    Eason Senior member

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    BodPod also does resting metabolic rate I think. However, in my experience the Bod Pod was actually the least accurate of all the tests I had done. DEXA would be the one to go with if you're white (it's calibrated for ethnically white bone densities IIRC) or hydrostatic weighing, which I still think is the most foolproof.
     
  8. Gradstudent78

    Gradstudent78 Senior member

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    And what about metabolic rate?

    Most accurate method is probably going to be direct calorimetry where you put someone in a chamber and measure energy as the amount of heat released.

    The most common method is probably going to be some kind of indirect calorimetry, which measures oxygen consumption, which can then be used to calculate caloric expenditure. There are various devices out there that can take pretty accurate measurements. Keep in mind you have to follow a strict protocol to get true BMR (including taking measurements shortly after waking, after an overnight fast). If they offer it at your gym it is probably not truly BMR, but resting metabolic rate.


    The following device was being marketed pretty heavily to gyms to measure RMR and it's pretty easy to use. I'm not sure on the accuracy. There use to be a bunch on ebay that were pretty cheap when the company went under (before someone bought it out and released it again).
    http://metabolicratetest.com/
     
  9. AndyMcL

    AndyMcL Well-Known Member

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    BodPod also does resting metabolic rate I think. However, in my experience the Bod Pod was actually the least accurate of all the tests I had done. DEXA would be the one to go with if you're white (it's calibrated for ethnically white bone densities IIRC) or hydrostatic weighing, which I still think is the most foolproof.
    The BodPod I used didn't do it, but there probably are versions that do. For me it was also less accurate, but I think it depends on the person. With really lean individuals it tends to underestimate (told me I had 3.7%BF) while DEXA said I was around 7%. I'm skinny, but not pro-body builder skinny. As for metabolic rate, like gradstudent said the most accurate way involves measuring the actual heat your body generates, however that's a much more expensive way to do it.
     
  10. bigasahouse

    bigasahouse Senior member

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    DEXA scan

    Does anyone offer that for your average person?
     
  11. Rambo

    Rambo Senior member

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    Just out of curiosity why do you need one of these tests?
     
  12. greg_atlanta

    greg_atlanta Senior member

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    Just out of curiosity why do you need one of these tests?

    1. OCD

    2. white people problems
     
  13. HRoi

    HRoi Senior member

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    i'm curious about the answer to a slightly different question - what is the most accurate test for someone who wants to conveniently do it in his own home? assume i'm willing to pay a reasonable price for the home equipment?
     
  14. Gradstudent78

    Gradstudent78 Senior member

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    i'm curious about the answer to a slightly different question - what is the most accurate test for someone who wants to conveniently do it in his own home? assume i'm willing to pay a reasonable price for the home equipment?

    For body composition:
    For an individual with little training and doing it by themselves, probably some kind of high end bioelectrical impedance, something like this (this is for example, there may be better machines out there, I'm not familar enough with the variety of BIA devices to truly recommend one high end BIA device over another):
    http://www.bodycompscale.com/bcs_3_details.shtml
    Notice the price is $3,895.00.


    However, your still sacrificing accuracy for convenience and for the cost your probably better off getting it tested somewhere by a more accurate means.
     
  15. why

    why Senior member

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    Does anyone offer that for your average person?
    Gastric bypass clinics often have them. Since many bypass surgeons are solely interested in money, just pay the price and they'll give you a ticket.
     
  16. whallyden

    whallyden Senior member

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    Does anyone offer that for your average person?

    Check the local University.
     
  17. SField

    SField Senior member

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    Just out of curiosity why do you need one of these tests?

    Curiosity mostly. I'd be interested in knowing how much energy my body needs.
     
  18. Rambo

    Rambo Senior member

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    Curiosity mostly. I'd be interested in knowing how much energy my body needs.
    I know you've asked questions about caloric intake and such before. Didn't know if you thought something was wrong.
     
  19. SField

    SField Senior member

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    I know you've asked questions about caloric intake and such before. Didn't know if you thought something was wrong.

    It's something I'm interested in. Food is a big thing for me, and putting some numbers behind how I've behaved for a long time (which has kept me thin) is just sort of a hobby. I don't invest a massive amount of time in it, it's just yet another thing to keep track of and think about. I like having dozens of little projects to keep track of.
     
  20. Gradstudent78

    Gradstudent78 Senior member

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    I know you've asked questions about caloric intake and such before. Didn't know if you thought something was wrong.

    In some people it can be useful to know. One of my friends found out he had a thyroid condition and after we tested him and his RMR was really low. Went to the doctor and got diagnosed.
     

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