hmmm. I can't find the specific article but I found a study that has me scratching my head.
3 AM
The effects of creatine ethyl ester
supplementation combined with heavy
resistance training on body composition,
muscle performance, and serum and muscle
creatine levels
Mike Spillane,1 Ryan Schoch,4 Matt Cooke,1
Travis Harvey,5 Mike Greenwood,1 Richard
Kreider,3 and Darryn S
Willoughbycorresponding author1,2
1Department of Health, Human
Performance and Recreation, Baylor
University, Box 97313, Waco, TX 76798, USA
2Institute for Biomedical Science, Baylor
University, Waco, TX 87898, USA
3Department of Health and Kinesiology,
Texas A&M University, College Station, TX
78743, USA
4Interdepartmental Nutrition Program,
Purdue University, West Lafayette, IN
47907, USA
5Department of Physical Education, United
States Military Academy, West Point, NY
10096, USA
corresponding authorCorresponding author.
Mike Spillane:
[email protected] ;
Ryan Schoch:
[email protected] ; Matt
Cooke:
[email protected] ; Travis
Harvey:
[email protected] ; Mike
Greenwood:
[email protected] ;
Richard Kreider:
[email protected] ;
Darryn S Willoughby:
[email protected]
Received December 29, 2008; Accepted
February 19, 2009.
This is an Open Access article distributed
under the terms of the Creative Commons
Attribution License ( Creative Commons
— Attribution 2.0 Generic ), which
permits unrestricted use, distribution, and
reproduction in any medium, provided the
original work is properly cited.
* Other Sections***9660;
o Abstract
o Introduction
o Methods
o Results
o Discussion
o Conclusion
o Competing interests
o Authors' contributions
o References
Abstract
Numerous creatine formulations have been
developed primarily to maximize creatine
absorption. Creatine ethyl ester is alleged
to increase creatine bio-availability. This
study examined how a seven-week
supplementation regimen combined with
resistance training affected body
composition, muscle mass, muscle strength
and power, serum and muscle creatine
levels, and serum creatinine levels in 30
non-resistance-trained males. In a double-
blind manner, participants were randomly
assigned to a maltodextrose placebo (PLA),
creatine monohydrate (CRT), or creatine
ethyl ester (CEE) group. The supplements
were orally ingested at a dose of 0.30 g/kg
fat-free body mass (approximately 20 g/
day) for five days followed by ingestion at
0.075 g/kg fat free mass (approximately 5 g/
day) for 42 days. Results showed
significantly higher serum creatine
concentrations in PLA (p = 0.007) and CRT
(p = 0.005) compared to CEE. Serum
creatinine was greater in CEE compared to
the PLA (p = 0.001) and CRT (p = 0.001)
and increased at days 6, 27, and 48. Total
muscle creatine content was significantly
higher in CRT (p = 0.026) and CEE (p =
0.041) compared to PLA, with no
differences between CRT and CEE.
Significant changes over time were observed
for body composition, body water, muscle
strength and power variables, but no
significant differences were observed
between groups. In conclusion, when
compared to creatine monohydrate,
creatine ethyl ester was not as effective at
increasing serum and muscle creatine levels
or in improving body composition, muscle
mass, strength, and power. Therefore, the
improvements in these variables can most
likely be attributed to the training protocol
itself, rather than the supplementation
regimen.
Non-enzymatic hydrolysis of creatine ethyl
ester.
Katseres NS, Reading DW, Shayya L,
Dicesare JC, Purser GH.
Department of Chemistry and Biochemistry,
The University of Tulsa, 800 Tucker Drive,
Tulsa, OK 74014, USA.
Abstract
The rate of the non-enzymatic hydrolysis of
creatine ethyl ester (CEE) was studied at 37
degrees C over the pH range of 1.6-7.0
using (1)H NMR. The ester can be present
in solution in three forms: the
unprotonated form (CEE), the
monoprotonated form (HCEE(+)), and the
diprotonated form (H(2)CEE(2+)). The
values of pK(a1) and pK(a2) of H(2)CEE(2+)
were found to be 2.30 and 5.25,
respectively. The rate law is found to be
Rate=-dCCEE/dt=k++[H2CEE2+][OH-]+k
+[HCEE+][OH-]+k0[CEE][OH-] where the
rate constants k(++), k(+), and k(0) are
(3.9+/-0.2)x10(6)L mol(-1)s(-1),
(3.3+/-0.5)x10(4)L mol(-1)s(-1), and
(4.9+/-0.3)x10(4)L mol(-1)s(-1),
respectively. Calculations performed at the
density functional theory level support the
hypothesis that the similarity in the values
of k(+) and k(0) results from intramolecular
hydrogen bonding that plays a crucial role.
This study indicates that the half-life of CEE
in blood is on the order of one minute,
suggesting that CEE may hydrolyze too
quickly to reach muscle cells in its ester
form.
from the looks of things it doesn't seem to be superior or not. from reading other people's experiences ive read it seems to be individual preference.