eating meat and muscle growth

[wilson6]

FYI

Effects of an omnivorous diet compared with a lactoovovegetarian diet on resistance-training-induced changes in body composition and skeletal muscle in older men1,2,3

Wayne W Campbell, Marvin L Barton, Jr, Deanna Cyr-Campbell, Stephanie L Davey, John L Beard, Gianni Parise and William J Evans

1 From the Nutrition, Metabolism, and Exercise Laboratory, Donald W Reynolds Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock; the Geriatric Research, Education, and Clinical Center, Central Arkansas Veterans Healthcare System, Little Rock; the Noll Physiological Research Center and the Department of Nutrition, The Pennsylvania State University, University Park; and the Department of Kinesiology, McMaster University, Hamilton, Canada.


Background: Very limited data suggest that meat consumption by older people may promote skeletal muscle hypertrophy in response to resistance training (RT).

Objective: The objective of this study was to assess whether the consumption of an omnivorous (meat-containing) diet would influence RT-induced changes in whole-body composition and skeletal muscle size in older men compared with a lactoovovegetarian (LOV) (meat-free) diet.

Design: Nineteen men aged 51–69 y participated in the study. During a 12-wk period of RT, 9 men consumed their habitual omnivorous diets, which provided 50% of total dietary protein from meat sources (beef, poultry, pork, and fish) (mixed-diet group). Another 10 men were counseled to self-select an LOV diet (LOV-diet group).

Results: Maximal strength of the upper- and lower-body muscle groups that were exercised during RT increased by 10–38% (P < 0.001), independent of diet. The RT-induced changes in whole-body composition and skeletal muscle size differed significantly between the mixed- and LOV-diet groups (time-by-group interactions, P < 0.05). With RT, whole-body density, fat-free mass, and whole-body muscle mass increased in the mixed diet group but decreased in the LOV- diet group. Type II muscle fiber area of the vastus lateralis muscle increased with RT for all men combined (P < 0.01), and the increase tended to be greater in the mixed-diet group (16.2 ± 4.4 %) than in the LOV diet group (7.3 ± 5.1%). Type I fiber area was unchanged with RT in both diet groups.

Conclusion: Consumption of a meat-containing diet contributed to greater gains in fat-free mass and skeletal muscle mass with RT in older men than did an LOV diet.

 

[MS]

AND?????

Aside from the obvious fact that these are old guys who were not accustomed to meat-free diets and were not given supplemental creatine (which any intelligent BB knows is stupid if you're not eating lots of red meat and herrings….), I assume Wilson6 has not read the entire article. These poor guys that got shoved in the vego group! This is from the authors of that study:

"The goal for dietary control was to have each man in the LOV-diet group completely abstain from any foods or beverages
that contained meat (striated muscle) or meat products. No attempt was made to otherwise control the types or amounts of foods or beverages consumed by the
LOV-diet group. Likewise, NO ATTEMPT WAS MADE TO MATCH OR BALANCE THE TOTAL ENERGY OR MACRONUTRIENT (protein, carbohydrate, or fat) INTAKES OF ANY OF THE MEN IN
THE STUDY"

"When the men assigned to the LOV-diet group started to self-select their LOV diets, THEIR PROTEIN AND FAT INTAKES TRENDED DOWN, wheareas the energy, carbohydrate, and ethanol intakes did not change significantly. "

"Indeed, a 5.5-kg mean increase in whole-body muscle mass exceeds reasonable expectations for a 12-wk RT program and reflects a probable overestimation of the
actual change in muscle mass by the urinary creatinine excretion method. However, possible causes for this apparent overestimation of the changes in muscle mass in
the mixed diet group remain to be established………………..the use of urinary creatinine
excretion as a quantitative index of RT-induced changes in whole-body muscle mass must be considered unvalidated."

"The apparent decrease over time in energy intake observed in the LOV-diet group may have contributed to the observed decline in body weight………………………..The notion that the lack of FFM gain and muscle hypertrophy in the
LOV-diet group was due to low dietary protein intakes cannot be ruled out." WELL DUH!

And so on……..

Anyway, I can't see how any of this is relevant to your average bodybuilder who eats a shitload of protein. There's no way any amino acids are gonna be limiting even if you ate nuttin but 1g per kg per day of soy protein (plus creatine) for 12 weeks straight.

Here's a nice, concise review by Lyle McDonald on the topic for those that are interested:
http://www.thinkmuscle.com/articles/mcdonald/protein-03.htm

One thing that should be obvious if you read all of the references in Lyle's articles is that vegos may need to eat more protein than their carnivorous counterparts if their protein intake is already borderline or the're starting a resistance training program that requires increased protein absorption and assimilation. This should not be a problem since these sources of protein are often cheaper anyway.

 

[Temple]

I think that since everyone know cattle are the leading cause of global warming I vote that we EAT THEM!

 

[Hannibal]

Didnt read the study...too many $5 words. But if the gist of it is MEAT IS GOOD....then I would totally agree.

I know what an omnivore is....what is a nectarvore?

 

[MS]

LOL spats is in good form today.

BTW a nectavore is someone who eats chicken necks. I've got two cats at home that are rabid nectavores.

Temple....trust a farmer's daughter to come up with a truly practical solution to global warming.

 

[wilson6]

"FYI "

"Anyway, I can't see how any of this is relevant to your average bodybuilder who eats a shitload of protein."

Didn't post it for anything other than a little reading and forum.

So MS, because women are always telling me what I really mean when I say something (so I'm told), why did I post this and why don't you think I read it?

W6

 

[Hannibal]

BTW a nectavore is someone who eats chicken necks. I've got two cats at home that are rabid nectavores.

thats not the way it was explained to me....

 

[SteelWeaver]

I thought a nectavore was a kind of succulent vampire

Mmm, W6 - I don't think any of the women here, EVEN MS, could presume to tell you what you mean, oh no, never! Why don't you just go ahead and tell us why you posted it?

I wonder why those researchers were so lazy about what they let the LOV group eat - I'm sure even a child could have told them that the first thing that happens when one switches to vegetarianism is that protein intake drops simply through the average-Joe ignorance of what it takes to keep it up.

 

[MS]

Oops, that was a major slip up on my part Wilson6. I should have known that you'd read the whole thing, and didn't mean anything at all by it except, as you said at the beginning, FYI. I'm just suffering acute estrogen induced hypersensitivity at the moment, and thought you were picking on us poor, undernourished vegos again. Of course, I'm also feeling guilty now that Temple01 pointed out that I'm part of the global warming problem rather than the solution!

Hannibal, what's YOUR understanding of a 'nectavore"?

 

[Hannibal]

Hannibal, what's YOUR understanding of a 'nectavore"?

As I understand it a nectarvore survives by consuming the nectar of the sweetest of flowers. Now I could be wrong...but thats what I was told.