Weight Loss and Muscle Mass

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Over the years, I've managed to add some muscle mass to my previously weak body. I believe in heavy lifting as the only way to build and/or maintain muscle mass.

I'm now at a point where I want to lose some of this excess fat. I've heard that, no matter what, when you have a calorie deficit, you are going to lose muscle mass. Is this true, even when you are still lifting heavy?

If this is true, are there things that can be done that will limit the amount of muscle you lose?

How important is protein to this equation? I've done my share of protein shakes, but have cut them out recently because of cost. Are there studies that prove the benefit of protein in your diet when you are lifting?

Thanks in advance for your thoughtful replies.

P.S. Experience has shown me that there are many different opinions about what works and doesn't work. If you have an opinion, please provide your source.

Replies

  • Mr_Knight
    Mr_Knight Posts: 9,532 Member
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    If this is true, are there things that can be done that will limit the amount of muscle you lose?

    Big, heavy compound lifts (bench press, overhead press, squats, deadlifts, etc).

    Much debate about frequency, set structure, etc. Personally I do 5x5, twice a week. I can say with confidence that a 5x5 of deadlifts with heavy weights is very very capable of wiping you out for the day. :)
  • Azdak
    Azdak Posts: 8,281 Member
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    There are a number of factors involved:

    1. Volume of cardio

    2. Mix of cardio intensities

    3. Protein intake

    4. Current body fat %

    5. Calorie deficit

    6. Type of cardio

    7. Volume and intensity of current lifting routine.

    8. Current amount of muscle mass.

    9. Sometimes, macronutrient ratio.

    For most people, if you maintain an appropriate protein intake (1.0 to 1.5 g per kg of body weight), avoid very low calorie diets, and continue to lift heavy, then loss of muscle mass should be negligible.
  • DopeItUp
    DopeItUp Posts: 18,771 Member
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    There are a number of factors involved:

    1. Volume of cardio

    2. Mix of cardio intensities

    3. Protein intake

    4. Current body fat %

    5. Calorie deficit

    6. Type of cardio

    7. Volume and intensity of current lifting routine.

    8. Current amount of muscle mass.

    9. Sometimes, macronutrient ratio.

    For most people, if you maintain an appropriate protein intake (1.0 to 1.5 g per kg of body weight), avoid very low calorie diets, and continue to lift heavy, then loss of muscle mass should be negligible.

    Yup. Exactly this. Keep your protein high, keep your deficit small, and keep lifting. You will be fine. Minimal if any LBM loss will result.
  • VorJoshigan
    VorJoshigan Posts: 1,106 Member
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    Yes you will lose lean bodymass. Yes, protein helps. http://www.medicalnewstoday.com/releases/62937.php
  • joshdann
    joshdann Posts: 618 Member
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    I echo most of what the above posters have said.

    I'll add: many studies have shown that for "overfat" (overweight with high BF%) people, the body is perfectly capable of gaining strength and muscle mass while concurrently burning fat. Technically, they do not happen at the same moment. Muscle mass building happens primarily during repair, on your rest days. Fat burning happens mainly on your workout days. It's more granular than that, but most people manage their diets most easily in 24-hour chunks.

    Ensuring that you have plenty of protein and are lifting heavy can and will negate the normal muscle loss one experiences when losing fat. Eating at a regular deficit will ensure that you also burn fat. It has been proven by many before me, and I'm working on adding to that pile of success stories. Good luck!
  • tonynguyen75
    tonynguyen75 Posts: 418 Member
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    Like everyone else said.

    Continue lifting, get high protein, do some cardio (but don't OVER do it) and most importantly, keep your deficit small.
  • shrinkinginQualicum
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    Check out Stroutman81 here on MFP. He is a weight trainer and he has a lot of interesting info on this and other questions. He has a website too, but I can't remember it right now. Should be able to get there from his profile though.
  • joshdann
    joshdann Posts: 618 Member
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    Or, make the deficit whatever size you want. The size of the deficit does not affect muscle gain or loss (if you're lifting), but it will affect fat loss. larger deficit means faster fat loss. Smaller deficit makes it easier (for some people) to stick to the plan, but that's the only proven significant benefit. It's also true that larger deficits tend to cause your body to adapt and lower your effective metabolism, but that is easily overcome by careful re-adjustment of your diet when you reach your goal weight.

    I currently eat at anywhere between "TDEE" -60% and -30%, every day. I shoot for the same 2000 calories each day. Some days I burn as much as 5000 calories, some days it's only 3000. My metabolism is actually better now than it was when I started, and I'm averaging about 5 lbs per week lost, plus I'm getting stronger and have measurably increased muscle mass. Not huge gains, of course, but gains nonetheless.
  • Iron_Feline
    Iron_Feline Posts: 10,750 Member
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    Or, make the deficit whatever size you want. The size of the deficit does not affect muscle gain or loss (if you're lifting), but it will affect fat loss. larger deficit means faster fat loss. Smaller deficit makes it easier (for some people) to stick to the plan, but that's the only proven significant benefit. It's also true that larger deficits tend to cause your body to adapt and lower your effective metabolism, but that is easily overcome by careful re-adjustment of your diet when you reach your goal weight.

    I currently eat at anywhere between "TDEE" -60% and -30%, every day. I shoot for the same 2000 calories each day. Some days I burn as much as 5000 calories, some days it's only 3000. My metabolism is actually better now than it was when I started, and I'm averaging about 5 lbs per week lost, plus I'm getting stronger and have measurably increased muscle mass. Not huge gains, of course, but gains nonetheless.

    Can I ask how you measured the muscle gains please?
  • DavPul
    DavPul Posts: 61,406 Member
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    Or, make the deficit whatever size you want. The size of the deficit does not affect muscle gain or loss (if you're lifting), but it will affect fat loss. larger deficit means faster fat loss. Smaller deficit makes it easier (for some people) to stick to the plan, but that's the only proven significant benefit. It's also true that larger deficits tend to cause your body to adapt and lower your effective metabolism, but that is easily overcome by careful re-adjustment of your diet when you reach your goal weight.

    I currently eat at anywhere between "TDEE" -60% and -30%, every day. I shoot for the same 2000 calories each day. Some days I burn as much as 5000 calories, some days it's only 3000. My metabolism is actually better now than it was when I started, and I'm averaging about 5 lbs per week lost, plus I'm getting stronger and have measurably increased muscle mass. Not huge gains, of course, but gains nonetheless.

    ^^No. NO. Noooooo. NOOOOOO. NOOOOOOOOOOoooooooooo NOOOOOOO NO NO NO NO NO NO

    If I wasn't clear, not only strongly disagree with every single sentence of the above post, I disagree with every paragraph, every bit of punctuation, hell, it's very existence.
  • Iron_Feline
    Iron_Feline Posts: 10,750 Member
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    Going by your ticker, with such a small amount of weight to lose I'd keep lifting heavy, eat a good amount of protein and have a small deficit maybe 10% of your TDEE.

    This will minimise muscle loss and help you lose as close to pure fat as possible.

    Sources? Well I read the studies the very knowledge people on this forum post. I'm on my phone so have no links so feel free to ignore my excellent advice :wink:
  • DopeItUp
    DopeItUp Posts: 18,771 Member
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    Or, make the deficit whatever size you want. The size of the deficit does not affect muscle gain or loss (if you're lifting), but it will affect fat loss. larger deficit means faster fat loss. Smaller deficit makes it easier (for some people) to stick to the plan, but that's the only proven significant benefit. It's also true that larger deficits tend to cause your body to adapt and lower your effective metabolism, but that is easily overcome by careful re-adjustment of your diet when you reach your goal weight.

    I currently eat at anywhere between "TDEE" -60% and -30%, every day. I shoot for the same 2000 calories each day. Some days I burn as much as 5000 calories, some days it's only 3000. My metabolism is actually better now than it was when I started, and I'm averaging about 5 lbs per week lost, plus I'm getting stronger and have measurably increased muscle mass. Not huge gains, of course, but gains nonetheless.

    Everything you have said is wrong. Everything everyone else has said was good advice.
  • joshdann
    joshdann Posts: 618 Member
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    ^^No. NO. Noooooo. NOOOOOO. NOOOOOOOOOOoooooooooo NOOOOOOO NO NO NO NO NO NO

    If I wasn't clear, not only strongly disagree with every single sentence of the above post, I disagree with every paragraph, every bit of punctuation, hell, it's very existence.
    You can disagree all you want, but the science doesn't back you up. Show me one scientific study that has ever proven that a 2000 calorie diet is in any way detrimental to your short term or long term health. I'd sure like to see one... I've looked, and I can't find any.
  • joshdann
    joshdann Posts: 618 Member
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    Everything you have said is wrong. Everything everyone else has said was good advice.
    wrong based on what evidence? Everything I said is backed by science and the personal experience of myself and tons of others. It's not easy, but it's perfectly sound.
  • DavPul
    DavPul Posts: 61,406 Member
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    ^^No. NO. Noooooo. NOOOOOO. NOOOOOOOOOOoooooooooo NOOOOOOO NO NO NO NO NO NO

    If I wasn't clear, not only strongly disagree with every single sentence of the above post, I disagree with every paragraph, every bit of punctuation, hell, it's very existence.
    You can disagree all you want, but the science doesn't back you up. Show me one scientific study that has ever proven that a 2000 calorie diet is in any way detrimental to your short term or long term health. I'd sure like to see one... I've looked, and I can't find any.

    i'm sorry, are we talking bout 2000 calorie diets? oh, my bad. yeah, 2000 calorie diets are perfectly fine. i apologize for my error







    we talkin net, right? i didn't see you suggesting that have a 3000 calorie deficit is a good idea, did i? because a 3000 cal deficit would be DISASTROUS for the OP, who only has a few pounds to lose. it would also be detriment to 80-90% of the general population. i must have misread your previous post because i could have sworn i saw something about tdee - 60% being a good idea. except, well, it's not. also disastrous. and surely i didn't see something in your post about the size of the deficit having no effect on muscle retention OR growth? damn, i have GOT to get these glasses checked
  • Iron_Feline
    Iron_Feline Posts: 10,750 Member
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    Everything you have said is wrong. Everything everyone else has said was good advice.
    wrong based on what evidence? Everything I said is backed by science and the personal experience of myself and tons of others. It's not easy, but it's perfectly sound.

    In for the science that says a net of -2000 cals is healthy and sound:noway:
  • joshdann
    joshdann Posts: 618 Member
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    TDEE-60% is fine for some people (like me, with still about 80 lbs of fat to lose), not for others (like the OP, with only a few lbs to lose). And no, I'm not talking net when I say I eat 2000 calories per day. I'm talking gross. OTOH, I eat a very protein-rich diet to get my 2000 calories.

    It is perfectly possible to counteract muscle loss with heavy lifting and a high protein diet. Even those who are not hitting the weights can mitigate losses by eating high protein. This mostly applies to "overfat" people, and I didn't notice that OP only wanted to lose a few lbs... but my statements stand.

    The biggest problem is that there is a great divide between those who want to lose weight and those who want to gain muscle. The bro science everyone loves to quote on this board is either in one camp or the other. "you have to eat more calories than you take in to add muscle" or "you can only reduce your intake by so much before it becomes disastrous". There is a grain of truth in each, but neither is absolute. You do still need to get the nutrients required to survive. Setting your macros properly helps you ensure you do just that. You do *not* need to eat more calories than that, though, *if* you have fat stores. Fat stores are just energy waiting to be converted and consumed. I get all the nutrients I need in that 2000 calories, and I burn fat for the rest of the fuel my body needs to do all the work I ask of it. Granted, I'm working harder than many people are willing to, so I can create such a high deficit through exercise... but barring disability, everyone in my situation has that same opportunity.

    I've made it my mission to lose fat *and* gain muscle at the same time, and I've done a /ton/ of research - reading every reputable source and scientific study I can get my hands on. I'm more than confident in what I'm saying. I'm putting it to practice... in fact, I'm late for the gym. Enjoy.
  • SteveHunt113
    SteveHunt113 Posts: 648 Member
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    Thanks for the input! Looks like I've got some things I'm not doing right.

    1) My deficit has been between 300 - 600 calories per day
    2) After heavy lifting, hit the cardio
    3) My protein intake on most days is probably not sufficient.

    My typical workout week looks like this:

    Sunday: Rest or running for 30 minutes
    Monday: Chest followed by 30 minutes HIIT Ellipcial
    Tuesday: Back followed by 30 minutes of running
    Wednesday: Legs in the AM, Spinning class at noon
    Thursday: Shoulders followed by 30 minutes of running
    Friday: Arms followed by 30 minutes HIIT Elliptical
    Saturday: Run for 30 minutes

    My short term goal is to get to 210 pounds. My long term goal is likely to get to 200 pounds. I'm 6' 0" and think 200 pounds looks will look pretty good ... as long as I don't lose much muscle in the process.