MFP calorie burns from strength training way too low?

Fithealthyforlife

I had been eating a 400-cal surplus for several months and had gained weight on it.

But in the past month, I started a much more intense lifting program (stronglifts). I increased to a 500 cal surplus most days once I started.

But since I started 4 weeks ago, I have not gained any weight. In fact, that 1 lb or so of fat I gained around my middle a few months ago from bulking is actually disappearing. So apparently I'm recomping instead of bulking...on a 500-cal surplus.

The guy who compiled the stronglifts program said to make certain (for a guy) that you eat around 3000 calories a day because it will burn off a lot. Apparently he is right...

MFP says I burn around 200 calories after an hour of stronglifts (using the "weight training" entry in the exercise diary). So I had been eating back those 200 plus the extra 500 on workout days, putting me at around 3250 cal total intake (with properly balanced macros) on workout days. And just the 400-500 calorie surplus alone on non-workout days (putting me at around 3000 on those days).

So is MFP likely to severely underestimate burns from *intense* weight training? Back when my lifting wasn't as intense, the MFP formula (including eating back exercise calories) + additional 400-cal surplus was plenty to make gains off of. It's just not happening anymore though!

I've decided to add another hundred calories on only weight-lifting days, and see what happens. (So, 600-cal surplus on lifting days and 500-cal on non-lifting days).

Please tell me I'm not the only one who went through this...it's so confusing to estimate how much I burn from weight training on this new program.

livityliv

I've found MFP's weight training entry to be too low as well (as compared to my heart rate monitor). My best advice would be to invest in a heart rate monitor. Generally, the ones with the chest strap are more accurate than those without. I've got a Polar and love it. They will give you a much more accurate calorie burn than the MFP "guesstimates."

Fithealthyforlife

I've found MFP's weight training entry to be too low as well (as compared to my heart rate monitor). My best advice would be to invest in a heart rate monitor. Generally, the ones with the chest strap are more accurate than those without. I've got a Polar and love it. They will give you a much more accurate calorie burn than the MFP "guesstimates."

Thanks for the reply and the idea of a heartrate monitor. Not going to be accurate for me though, b/c I tend to get really psyched up before workouts anyway, so it'd probably tell me I'm burning 1000 cal or something. If I got anything, it would be a fit-bit, which uses an accelerometer.

But I don't even feel the need to use a fit-bit right now. Trial and error is fine for the time being. I was just wondering if others have found the strength training estimates here to be too low. So far that's 2 of us!

The workout is the only thing that's changed since I've stopped gaining weight.

RllyGudTweetr

General consensus on the boards is that heart rate monitors do a poor job at guesstimating calorie burn on weight training, compared to the steady-state aerobic activity for which they're generally better suited. Weight training doesn't, typically, burn a whole lot of calories.

That said, if you're on a bulk to begin with, increasing your surplus by a bit if you're not seeing the gains you expected may be appropriate.

RaggedyPond

I find myself so hungry after weight training it can't possibly be only a 150 calorie burn in an hour.

Fithealthyforlife

I find myself so hungry after weight training it can't possibly be only a 150 calorie burn in an hour.

Yeah, and it must be more like 300 in my case instead of 200.

I think I'm on the right track...after the extra hundred calories yesterday, I feel like I am more recovered this evening, 24 hours later, than I felt this morning.

Anyone else?

acogg

Yes, I am having to find my calorie burn by how I feel. I was maintaining at 1500-1600 calories. I started a formal weight training program about six weeks ago and after 4 weeks of not eating more, I was starving. I decided to increase my calories to 1800. Last night I was starving so now again so am considering 2000 on work out days. After over a year of maintenance, I feel like I am floundering. :sad: I need to find my balance again!

waldo56

MFP's "strength training" entry is laughable, useful only for old ladies lifting pink dumbbells doing only isolation exercises.

The "circuit training" and/or "high effort calisthenics" are a much better approximation of calories burned while real strength training, which gives a value about 2/3-3/4 of what you'd get if you jogged for the same time period.

I actually don't think it matters much what form you are doing; recovery is more or less constant, set output is dependent on % recovered, whether you are doing heavy doubles, higher rep work, or anything in between.

Uber intense circuit work with heavy glycogen depletion (should feel the burn to the max) a la some Crossfit type stuff burns up the cals even faster than jogging does.

waldo56

I've found MFP's weight training entry to be too low as well (as compared to my heart rate monitor). My best advice would be to invest in a heart rate monitor. Generally, the ones with the chest strap are more accurate than those without. I've got a Polar and love it. They will give you a much more accurate calorie burn than the MFP "guesstimates."

HRM's are meant for steady state aerobic work.

They tell you nothing about intermittent anaerobic work, whose cal burn isn't even vaguely related to heart rate.

HRM's are useless for strength training calorie estimates.

Hornsby

Really, when you are lifting, you just have to experiment with the numbers. Anytime MFP tries to calculate something it can be way off as it doesn't know if you are curling 8lbs or squatting 400lbs.

I've been "experimenting" since October and am just now figuring out what my actual TDEE is.

Fithealthyforlife

MFP's "strength training" entry is laughable, useful only for old ladies lifting pink dumbbells doing only isolation exercises.

The "circuit training" and/or "high effort calisthenics" are a much better approximation of calories burned while real strength training, which gives a value about 2/3-3/4 of what you'd get if you jogged for the same time period.

I actually don't think it matters much what form you are doing; recovery is more or less constant, set output is dependent on % recovered, whether you are doing heavy doubles, higher rep work, or anything in between.

Uber intense circuit work with heavy glycogen depletion (should feel the burn to the max) a la some Crossfit type stuff burns up the cals even faster than jogging does.

Wow! I just looked up the circuit training, and it says I'd burn 500 in an hour! I don't know if I'm actually burning quite that much...but it certainly seems higher than 200.

milileitner

They're way inaccurate. You're probably better off trying to figure out your TDEE from a calculator like this which allows you to input specific kinds of training:

http://www.doyoueven.com/tdee/

For me (female/126 lbs/5'1/age 24), a 90 minute training session burns somewhere between 400-800 cals depending on what I'm doing that day. This means I maintain on about 2500-2800 cals, so it's no surprise you're not seeing gains on 3250.

Fithealthyforlife

They're way inaccurate. You're probably better off trying to figure out your TDEE from a calculator like this which allows you to input specific kinds of training:

http://www.doyoueven.com/tdee/

For me (female/126 lbs/5'1/age 24), a 90 minute training session burns somewhere between 400-800 cals depending on what I'm doing that day. This means I maintain on about 2500-2800 cals, so it's no surprise you're not seeing gains on 3250.

Wow...I'm male, age 28 and 5'9...that's 8 inches taller. So you have to eat over 2800 to gain weight?

I was seeing gains just fine on my old, less intense lifting program, but when I started this one, it just halted. And it's been over a month now.

Your reply was eye-opening. I am going to call it a 400-cal burn per hour and see what happens.

I don't use TDEE. I would, but my activity varies so greatly from day-to-day and week-to-week (yard work, etc.) that it would be a mess. The TDEE calculators all seem to underestimate caloric needs compared to MFP, too.

Thanks for the advice!

appy85

I noticed that it is really low if it calculates it at all. I had done the calculations on another site(Health Status dot com) and plugged them in under cardiovascular just to get a rough idea of how many calories to add to my day. I am only weight training to lose weight and tone. I am only able to really do that until my ankle injury clears up.

dixiewhiskey

I think it's way too low especially when you start breaking out a sweat within 10 minutes of doing Stronglifts and MFP says it's only 60 cals burned.

Try upping by 200 every week in addition to what you've already increased and see if you gain from that.

QuietBloom

I've found MFP's weight training entry to be too low as well (as compared to my heart rate monitor). My best advice would be to invest in a heart rate monitor. Generally, the ones with the chest strap are more accurate than those without. I've got a Polar and love it. They will give you a much more accurate calorie burn than the MFP "guesstimates."

Heart rate monitors are accurate for steady state cardio only.

geebusuk

There is no good way to measure calories burnt strength training.

Well, the best way is to look at your scale.
If it's going down, you need to eat more .

lisalsd1

I thought the strength-training option was underestimating the cals burned as well. I googled something like "how many calories burned + weights." I found an algorithm online to help determine cals burned. I ran the #s...and it looks that MFP errs on the side of caution and uses the lowest amount of effort to determine cals burned.

For me, I thought this was fine...better to underestimate than over estimate; BUT, I'm not trying to exactly "gain."

Redheadllena

I'm struggling with the same thing! I lift and I want to log the lifts but MFP doesn't seem to be the way. And according to my TDEE and BMR numbers, even minus 20% in an attempt to lose inches while lifting has me at around what MFP considers "maintenance" or higher. Definitely still experimenting- I keep my diary goals set to lower than what I know I should be hitting and just go over, but it's hard to know what my real target is.

Also I'm definitely more hungry the day after lifting and so I listen to my body and eat more those days, especially protein. If anyone has a magic formula, please share!!

Tedebearduff

If your concerned buy a heat rate monitor and wear it while working out ... end of story

Hornsby

If your concerned buy a heat rate monitor and wear it while working out ... end of story

Except heart rate monitors aren't accurate at all for weight training.....story reopened.