PDA

View Full Version : whey vs casein, effects on LBM


Will Brink
September 30th 06, 03:18 PM
The results of this new study are interesting. However, it's one of those
studies where one really needs to see the details to make any real
conclusions like: did they control for diet, did they even try to control
for diet, when did they take it, what was the diet like, was it
isocaloric, etc, etc. Regardless, still interesting:



IJSNEM, 16(5), October 2006, Copyright 2006

The Effect of Whey Isolate and Resistance Training on Strength, Body
Composition, and Plasma Glutamine

Paul J. Cribb; Andrew D. Williams; Michael F. Carey; Alan Hayes Full
Article Table of Contents for Vol. 16, Iss. 5


Abstract

Different dietary proteins affect whole body protein anabolism and
accretion and therefore, have the potential to influence results obtained
from resistance training. This study examined the effects of
supplementation with two proteins, hydrolyzed whey isolate (WI) and casein
(C), on strength, body composition, and plasma glutamine levels during a
10 wk, supervised resistance training program. In a double-blind protocol,
13 male, recreational bodybuilders supplemented their normal diet with
either WI or C (1.5 gm/kg body wt/d) for the duration of the program.
Strength was assessed by 1-RM in three exercises (barbell bench press,
squat, and cable pull-down). Body composition was assessed by dual energy
X-ray absorptiometry. Plasma glutamine levels were determined by the
enzymatic method with spectrophotometric detection. All assessments
occurred in the week before and the week following 10 wk of training.
Plasma glutamine levels did not change in either supplement group
following the intervention. The WI group achieved a significantly greater
gain (P < 0.01) in lean mass than the C group (5.0 0.3 vs. 0.8 0.4 kg
for WI and C, respectively) and a significant (P < 0.05) change in fat
mass (*1.5 0.5 kg) compared to the C group (+0.2 0.3 kg). The WI group
also achieved significantly greater (P < 0.05) improvements in strength
compared to the C group in each assessment of strength. When the strength
changes were expressed relative to body weight, the WI group still
achieved significantly greater (P < 0.05) improvements in strength
compared to the C group.

Kromagnon
October 2nd 06, 03:36 PM
Will Brink wrote:
> The results of this new study are interesting. However, it's
one of
> those studies where one really needs to see the details to
make any
> real conclusions like: did they control for diet, did they
even try
> to control for diet, when did they take it, what was the diet
like,
> was it isocaloric, etc, etc. Regardless, still interesting:

They tried to keep everybody on their 'normal diet'. (Good or
bad I guess)

"Written three-day food recordings were completed by the
bodybuilders to demonstrate that subject's normal eating
patterns were maintained throughout the study. "

They took 1.5gm/kg/day of protein for 10 weeks.

Here's a link to the full article from 2002:
http://tinyurl.com/ogpom


K

Robert Schuh
October 3rd 06, 06:31 AM
Kromagnon wrote:

> Will Brink wrote:
> > The results of this new study are interesting. However, it's
> one of
> > those studies where one really needs to see the details to
> make any
> > real conclusions like: did they control for diet, did they
> even try
> > to control for diet, when did they take it, what was the diet
> like,
> > was it isocaloric, etc, etc. Regardless, still interesting:
>
> They tried to keep everybody on their 'normal diet'. (Good or
> bad I guess)
>
> "Written three-day food recordings were completed by the
> bodybuilders to demonstrate that subject's normal eating
> patterns were maintained throughout the study. "
>
> They took 1.5gm/kg/day of protein for 10 weeks.
>
> Here's a link to the full article from 2002:
> http://tinyurl.com/ogpom
>
> K

Is that total protein or supplemented protein? If that is total protein,
that is not much at all.


--
Robert Schuh
"Everything that elevates an individual above the herd and
intimidates the neighbour is henceforth called evil; and
the fair, modest, submissive and conforming mentality,
the mediocrity of desires attains moral designations and honors"
- Nietzsche

http://www.hardbopdrums.com/

Kromagnon
October 3rd 06, 09:26 AM
Robert Schuh wrote:
> Kromagnon wrote:
>
>> Will Brink wrote:
>>> The results of this new study are interesting. However, it's
>> one of
>>> those studies where one really needs to see the details to
>> make any
>>> real conclusions like: did they control for diet, did they
>> even try
>>> to control for diet, when did they take it, what was the
diet
>> like,
>>> was it isocaloric, etc, etc. Regardless, still interesting:
>>
>> They tried to keep everybody on their 'normal diet'. (Good or
>> bad I guess)
>>
>> "Written three-day food recordings were completed by the
>> bodybuilders to demonstrate that subject's normal eating
>> patterns were maintained throughout the study. "
>>
>> They took 1.5gm/kg/day of protein for 10 weeks.
>>
>> Here's a link to the full article from 2002:
>> http://tinyurl.com/ogpom
>>
>> K
>
> Is that total protein or supplemented protein? If that is
total
> protein, that is not much at all.

In addition to what they were already eating:

"In a randomized, double-blind protocol thirteen
resistance-trained males (age: 25.5 2.7, 26.1 2.1 yrs;
weight: 84.0 2.0, 79.7 4.2 mean SEM for whey (n = 6) and
casein (n = 7) groups, respectively) supplemented their normal
diet with either a 100% whey isolate or casein (1.5gms/kg body
wt/day) for 10 weeks."


K

Robert Schuh
October 6th 06, 01:55 AM
Kromagnon wrote:

> Robert Schuh wrote:
> > Kromagnon wrote:
> >
> >> Will Brink wrote:
> >>> The results of this new study are interesting. However, it's
> >> one of
> >>> those studies where one really needs to see the details to
> >> make any
> >>> real conclusions like: did they control for diet, did they
> >> even try
> >>> to control for diet, when did they take it, what was the
> diet
> >> like,
> >>> was it isocaloric, etc, etc. Regardless, still interesting:
> >>
> >> They tried to keep everybody on their 'normal diet'. (Good or
> >> bad I guess)
> >>
> >> "Written three-day food recordings were completed by the
> >> bodybuilders to demonstrate that subject's normal eating
> >> patterns were maintained throughout the study. "
> >>
> >> They took 1.5gm/kg/day of protein for 10 weeks.
> >>
> >> Here's a link to the full article from 2002:
> >> http://tinyurl.com/ogpom
> >>
> >> K
> >
> > Is that total protein or supplemented protein? If that is
> total
> > protein, that is not much at all.
>
> In addition to what they were already eating:
>
> "In a randomized, double-blind protocol thirteen
> resistance-trained males (age: 25.5 2.7, 26.1 2.1 yrs;
> weight: 84.0 2.0, 79.7 4.2 mean SEM for whey (n = 6) and
> casein (n = 7) groups, respectively) supplemented their normal
> diet with either a 100% whey isolate or casein (1.5gms/kg body
> wt/day) for 10 weeks."
>
> K

Thanks


--
Robert Schuh
"Everything that elevates an individual above the herd and
intimidates the neighbour is henceforth called evil; and
the fair, modest, submissive and conforming mentality,
the mediocrity of desires attains moral designations and honors"
- Nietzsche

http://www.hardbopdrums.com/