Looking for formula for figuring out % of Muscle gained

P90XCertifiedCoach
P90XCertifiedCoach Posts: 369
edited October 2024 in Health and Weight Loss
I found a formula for muscle gained but its didnt work fo rme because Iam also losing weight, does anyone know of a formula to determine muscle gained during weight loss?

Replies

  • stayxtrue
    stayxtrue Posts: 1,186 Member
    The best way to go about this is to work out your body fat% this wil give you a clear indication
  • I didn't know there was a formula. I'm just browsing. I had a body scan done. It was pretty in depth about what areas of my body needed the most work. Turns out I'm not as "fat " as I thought lol!
  • PepeGreggerton
    PepeGreggerton Posts: 986 Member
    You're looking for a way to calculate lean body mass. Without a body scan every thing is pretty much a best guess or an estimate. Get a pair of calipers, and start taking measurements.
  • stayxtrue
    stayxtrue Posts: 1,186 Member
    Here is a link to bodybuilding.com's lean body mass calculator

    http://www.bodybuilding.com/fun/lbm_calculator.htm
  • gp79
    gp79 Posts: 1,799 Member
    You need to know your body fat to figure this out. Once you know your body fat then you can calculate lean body mass. Train, eat right and test it again later down the road (6 mos?) Keep in mind that if you're eating in a calorie deficit, your likely not putting on any muscle mass.
  • Shock_Wave
    Shock_Wave Posts: 1,573 Member
    Your bf% can give you an idea. Example: If your starting weight 200 lbs at 10% bf. Ending weight 1 year later 220 lbs at 10% bf is a 20 lb lean muscle gain. Just to keep it simple.
  • yea but I m losing weight here are my stats I started out at 286 with 32.6% body fat, Now Im at 210 and 19.6% bpdy fat. that difference is roughly 76 pounds. If I had gained weight it would b easy to tell as long as body ft goes down, but Im losing so is there a way to tell How much muscle I have gained if Im losing weight. I am not the best mathamatician so I hope I am not missing something easy.

    So I take the 286-32 and get 254 pounds lean body mass, then I take 210-19 and get 191 pounds lean body mass, an dnow I am confused whats my answer
  • djkshdfd
    djkshdfd Posts: 443 Member
    yea but I m losing weight here are my stats I started out at 286 with 32.6% body fat, Now Im at 210 and 19.6% bpdy fat. that difference is roughly 76 pounds. If I had gained weight it would b easy to tell as long as body ft goes down, but Im losing so is there a way to tell How much muscle I have gained if Im losing weight. I am not the best mathamatician so I hope I am not missing something easy.

    So I take the 286-32 and get 254 pounds lean body mass, then I take 210-19 and get 191 pounds lean body mass, an dnow I am confused whats my answer

    I already posted the formula above. I understand you're not good at math, so i'll do it for you. I was crappy at math, but for my majors it's 90% of my classes are math.


    starting
    286
    32.6% bf

    ending stats
    210
    19.6 % bodyfat

    your starting stats
    286(body weight) * .326(body %) = 93.2 (pounds of fat)
    286(total weight) - 93.2(pounds of fat) = 192.8lbs(of muscle)


    your ending stats
    210(bodyweight) * .196(body %) = 41.16(pounds of fat)
    210(body weight) - 41.16(pounds of fat) = 168.84(lbs of muscle)

    difference in stats
    So 168.84(ending muscle mass) - 192.8(starting muscle) = -23.96(muscle gain)
    93.2lbs(starting fat) - 41.16(lbs of fat) = 52.04lbs (fat loss)

    Total weight loss = 23.96 + 52.04 = 76lbs exactly. This is what shows on your ticker as well.

    So sorry to break it to you man,but you lost 23.98lbs of muscle.
    and lost 52.04lbs of fat.


    Wow Pu, great calculation very clearly broken down!
  • chrisdavey
    chrisdavey Posts: 9,834 Member
    Good numbers PU.

    Only thing is, how did he calculate bf% as most ways are quite inaccurate.
  • WOW, I find that very hard to believe that I lost 23 pounds of muscle just for the fact I have had huge strength gains, My bench press is up 40 pounds since April, My squats are up 120 pounds. I have been doing P90X Religiously since August 1st. I have actually had an increased measurement on my chest and arms. I got the same numbers you got so I believe the math is right, nut it sure doesnt seem like I have lost muscle. Oh well I will keep on trucking. Thanks for the help everybody.
  • MaximalLife
    MaximalLife Posts: 2,447 Member
    I found a formula for muscle gained but its didnt work fo rme because Iam also losing weight, does anyone know of a formula to determine muscle gained during weight loss?
    Try these
    http://www.healthstatus.com/calculators.html

    Here is the one I use:
    http://www.scientificpsychic.com/fitness/diet.html
  • My fat analizer is the electronic one and it says give or take 6%, I didnt think about that, Ill do the math for worst and best of that. Maybe I will feel better LOL
  • PepeGreggerton
    PepeGreggerton Posts: 986 Member
    WOW, I find that very hard to believe that I lost 23 pounds of muscle just for the fact I have had huge strength gains, My bench press is up 40 pounds since April, My squats are up 120 pounds. I have been doing P90X Religiously since August 1st. I have actually had an increased measurement on my chest and arms. I got the same numbers you got so I believe the math is right, nut it sure doesnt seem like I have lost muscle. Oh well I will keep on trucking. Thanks for the help everybody.

    Size doesn't indicate strength in muscle, it's all about density.
  • How do you calculate body fat % ?
This discussion has been closed.