Muscle Mass/Body Fat

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  • Tacklewasher
    Tacklewasher Posts: 7,122 Member
    Aaron_K123 wrote: »
    Tacklewasher wrote: »
    So, when someone has 30% fat and 70% LBM, where would the glycogen get counted? From what you described, it seems to me it would be part of the LBM, is that correct?

    Yeah it would be LBM. I mean people act like LBM means muscle...it doesn't, it just means body mass that isn't fat.

    Thanks.

    Kinda seems a bit counter-intuitive to me. I always though of it as part of fat in that it is an energy store. But I get what you are saying (for the most part).

    Appreciate your posts (as always).
  • ssurvivor
    ssurvivor Posts: 142 Member
    getskinny1973 wrote: »
    I am a 44 year old woman.

    My muscle mass is 61.3%
    Bone Mass is 3.3%
    But my body fat is at 35%!!!

    How is this even possible?

    Well,

    61.3 + 3.3 = 64.6% which rounds to 65%. 65+35 = 100%

    Keep in mind that an ideal BFP for a woman is 22-28% so 35% isn't that far off from ideal. So if you focus on building muscle, you can be in the ideal body fat range in no time.

  • Aaron_K123
    Aaron_K123 Posts: 7,122 Member
    edited March 2018
    Tacklewasher wrote: »
    Aaron_K123 wrote: »
    Tacklewasher wrote: »
    So, when someone has 30% fat and 70% LBM, where would the glycogen get counted? From what you described, it seems to me it would be part of the LBM, is that correct?

    Yeah it would be LBM. I mean people act like LBM means muscle...it doesn't, it just means body mass that isn't fat.

    Thanks.

    Kinda seems a bit counter-intuitive to me. I always though of it as part of fat in that it is an energy store. But I get what you are saying (for the most part).

    Appreciate your posts (as always).

    Bodyfat percentage is a meaningful measurement, lean mass is just what is left to add up to 100%. Not to say it is pointless. If you track your % bodyfat AND your overall weight then you can see if over time your lean mass is increasing, decreasing or staying the same. Sure day to day there will be fluctuations but the overall trend there can be meaningful and things like water weight and glycogen weight will fluctuate as much up as down and will cancel out as noise from the overall trend.

    I don't actually know (embarassingly enough) but I don't think your body stores glycogen in the same way it stores fat, I think glycogen is a limited amount of storage and tends to be in your muscle tissue where fat you can keep adding and adding and adding. You won't build up a greater and greater glycogen store if you get obese, but you will build up your fat stores.

    An analogy might be that glycogen is a car battery while fat in the form of tricglycerides is the gas tank. The battery will drain and refill as you exercise and eat but the gas tank is either getting filled (excess) or getting depleted (deficit)
  • Aaron_K123
    Aaron_K123 Posts: 7,122 Member
    edited March 2018
    ssurvivor wrote: »
    getskinny1973 wrote: »
    I am a 44 year old woman.

    My muscle mass is 61.3%
    Bone Mass is 3.3%
    But my body fat is at 35%!!!

    How is this even possible?

    Well,

    61.3 + 3.3 = 64.6% which rounds to 65%. 65+35 = 100%

    Keep in mind that an ideal BFP for a woman is 22-28% so 35% isn't that far off from ideal. So if you focus on building muscle, you can be in the ideal body fat range in no time.

    I think her issue was with her scale saying (or her misinterpreting her scale as saying) that 61% of her total mass was muscle. She correctly interpreted that to be unlikely given she isn't a professional body builder and she has things like organs and water in her body.
  • CharlieBeansmomTracey
    CharlieBeansmomTracey Posts: 7,682 Member
    edited March 2018
    wanzik wrote: »
    CharlieBeansmomTracey wrote: »
    mommy3esq wrote: »
    If you want a truly accurate measurement you can get a dexascan. It is often referred to as a gold standard for body fat testing, body composition, DEXA scans, muscle, heart rate fitness, and metabolic tests.

    what does a muscle and heart rate fitness test or metabolic test got to do with fat loss? fat loss doesnt always mean better heart rate fitness or anything else. many overweight people can have good heart rates and be fit(not look fit but actually be in good cardiovascular health). it has nothing to do with your fat percentage.

    What does "fat loss" have to do with this conversation? It's about getting an accurate body comp.
    the op was asking about fat percentages and so on. and what a muscle and heart rate fitness test had to do with what I meant was fat percentage. I accidentally put loss instead of percentages. oh my
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