Fat to muscle ratio during weight gain

[darislav89]

Hello everyone

Can someone provide a link or summary of an article which explains the difference in fat and muslce gain whilst gaing weight, whilst training. So something a like a study where two groups ate in caloric surplus but the control group didnt train whilst the experimental group trained. Then both groups fat and muscle was measured. Im sure studies like this exisit, but Im more interested in a meta study or article which summarises the results.

Thanks

[Chesticles2]

It is very challenging to find studies that pertain to the way a bodybuilder would gain in an offseason. Mainly because bodybuilders won't go on a diet that might cause unnecessary fat gain. I'm trying to figure out what you are actually wanting to know from your question. Are you looking to know how much fat gain is normal on a "bulking" phase of your diet?

[darislav89]

It is very challenging to find studies that pertain to the way a bodybuilder would gain in an offseason. Mainly because bodybuilders won't go on a diet that might cause unnecessary fat gain. I'm trying to figure out what you are actually wanting to know from your question. Are you looking to know how much fat gain is normal on a "bulking" phase of your diet?

Not so interested in what actual bodybuidlers do. Lets say Bob, who doesnt train, gains 10lbs in 10 months. His twin Fred does the same except Fred is an regular gym goes (intermediate) and trained over that 10 month period. How much of those 10lbs would be fat?

Obviously its hard to answer that but looking for a rough idea. Just curious

[DougyF7]

Hello everyone

Can someone provide a link or summary of an article which explains the difference in fat and muslce gain whilst gaing weight, whilst training. So something a like a study where two groups ate in caloric surplus but the control group didnt train whilst the experimental group trained. Then both groups fat and muscle was measured. Im sure studies like this exisit, but Im more interested in a meta study or article which summarises the results.

Thanks

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7068252/

[Chesticles2]

You nailed it...hard to answer lol There are a lot of variables here.
Lets assume they eat the same diet and stay within their maintenance calories. Even still there are large factors at play.

Genetically, a fast metabolism and physical job for a 25 year old Bob (who doesn't train) could have easily gained 8 lbs of muscle and 2 lbs of fat. He could have also just started his new physical job instead of his previous sedentary job which would be a large factor.

Lets say they both have desk jobs for sake of trying to get to the bottom of this. Bob (non training) may have gained 10lbs of fat with zero muscle if nothing changes. But then why did he gain fat? Calorie surplus is likely. Stress is a large factor. Lifestyle changes.

Any ratio is extremely normal in my opinion. 10lbs also isn't a heck of a lot for somebody who is 200+lbs. So a 150lb guy adding 10lbs of muscle may be more noticeable than a 215lb guy adding 10lbs fat.
I could talk forever...but I'll stop here haha

[Chesticles2]

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7068252/

Found under the limitations of the study. This still shows that understanding what is happening to tissue under the skin is very challenging when it comes to giving a generalization of ratios to a general population. The body is so complex and lifestyle factors play a massive role, especially when these changes occur over months.
Good find though!
"Clearly, the methodologies used differ from each other, finding a non-significant difference of 45.6−54.6% when comparing hypertrophy by means of FFM and LMM versus MM. In the context of body composition and muscle hypertrophy, it is important to be very clear about what these two concepts mean and how they are measured as variables. Ideally, muscle mass should be measured isolated from the rest of the tissues, but this can only be achieved by using nuclear magnetic resonance and most of the studies do not utilize this method."

[darislav89]

You nailed it...hard to answer lol There are a lot of variables here.
Lets assume they eat the same diet and stay within their maintenance calories. Even still there are large factors at play.

Genetically, a fast metabolism and physical job for a 25 year old Bob (who doesn't train) could have easily gained 8 lbs of muscle and 2 lbs of fat. He could have also just started his new physical job instead of his previous sedentary job which would be a large factor.

Lets say they both have desk jobs for sake of trying to get to the bottom of this. Bob (non training) may have gained 10lbs of fat with zero muscle if nothing changes. But then why did he gain fat? Calorie surplus is likely. Stress is a large factor. Lifestyle changes.

Any ratio is extremely normal in my opinion. 10lbs also isn't a heck of a lot for somebody who is 200+lbs. So a 150lb guy adding 10lbs of muscle may be more noticeable than a 215lb guy adding 10lbs fat.
I could talk forever...but I'll stop here haha

Im reading the study above, might take me some time to translate the results. Trying to extract a basic idea from it like: if not training> ~80% of gain will be fat. If training well ~80% of gain will be muscle.

To answer you. Is it actually possible to gain 10lbs of weight and all of that fat? Isnt it always a ratio of fat and muscle.

[Chesticles2]

Im reading the study above, might take me some time to translate the results. Trying to extract a basic idea from it like: if not training> ~80% of gain will be fat. If training well ~80% of gain will be muscle.

To answer you. Is it actually possible to gain 10lbs of weight and all of that fat? Isnt it always a ratio of fat and muscle.

Yes. It's possible for there to be a 10lb gain of fat without muscle gain.

[johnwilson007]

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