|
Subjects |
Supplementation Protocol |
Test Protocol |
Results |
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|
Performance |
Body Composition |
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|
Burke et al. |
32 (18 Male; 14 |
5g Creatine monohydrate + 2g sucrose |
Preferred stroke |
No significant performance |
Not specified |
|
|
1996 |
Female) |
OR 5g polyglucose + 2g sucrose |
1x25m sprint |
changes in any of the trials in |
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|
17-25 yrs |
4 x per day, 5 Days |
1x50m sprint |
either group |
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|
National level |
Randomised, double blinded |
1x100m sprint |
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|
swimmers |
10mins active recovery + |
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|
2-3mins passive recovery |
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|
between sprints |
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|
Havenetidis |
21 (11 Male; 10 |
2 identical supplementation periods; 4 |
Stroke not specified |
Significant improvement in race |
Not specified |
|
|
et al. 1996 |
Female) |
months apart |
Official meet race |
time (2.1%) following first |
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|
Elite swimmers |
performance |
supplementation period for the |
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|
5g Creatine OR 5g placebo |
creatine group only |
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|
5 x per day, 4 Days |
Distance not specified |
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|
Further improvements in race |
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|
No randomisation, double blinded |
times (3.0%) following second |
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|
supplementation period for the |
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|
creatine group only |
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|
Mujika et al. |
20 (11 Male; 9 |
5g Creatine monohydrate OR 5g lactose |
Preferred stroke |
No significant performance |
Significant increase in |
|
|
1996 |
Female) |
placebo |
1x25m sprint |
changes in any of the 3 trials |
body weight (1%) in the |
|
|
~ 20 yrs |
4 x per day, 5 Days |
1x50m sprint |
or the sum of the 3 trials in |
creatine group only |
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|
National or |
Randomisation not specified, double |
1x100m sprint |
either group |
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|
international level |
blinded |
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|
swimmers |
300m active recovery + |
Tendancy towards reduced |
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|
20-25 mins passive |
performance in 25m and 50m |
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|
recovery between sprints |
swims in the creatine group |
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|
Thompson et |
10 (Female) |
2g Creatine OR 2g placebo |
Freestyle |
No significant effect on swim time |
No change to lean body |
|
|
al. 1996 |
University |
1 x per day, 6 Weeks |
1x100m sprint |
in either sprint for either group |
mass |
|
|
swimmers |
Randomised, blinding not specified |
1x400m sprint |
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|
Peyrebrune et |
14 (Male) |
3g Creatine + 1.5g maltodextrin + 1.5g |
Preferred stroke |
No effect on performance in either |
Not specified |
|
|
al. 1998 |
~ 20-21 yrs |
glucose OR 6g glucose |
1x50yd sprint |
group |
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|
National level |
3 x per day, 5 Days |
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|
swimmers |
Randomised, double blinded |
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|
Dawson et al. |
20 (10 Male; 10 |
Acute loading period: 5g creatine |
Freestyle |
No significant improvements |
No significant body |
|
|
2002 |
Female) |
monohydrate + 1g glucose polymer OR |
1x50m sprint |
in performance for either |
mass changes |
|
|
~ 16 yrs |
6g glucose polymer |
1x100m sprint |
group |
Skinfold totals |
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|
Competitive |
4 x per day; 5 days |
3x100m recovery swims |
decreased for both |
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|
swimmers |
Maintenance period: 5g creatine |
on a departure interval of |
groups, but were not |
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|
monohydrate OR 5g glucose polymer; 1 |
1.5 mins |
statistically different |
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|
x per day; 22 days |
from the respective |
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|
Randomised, single blinded |
baseline scores |
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|
Selsby et al. |
15 (8 Male; 7 |
Acute loading period: 0.3g creatine / kg |
Freestyle |
Trend towards improved |
No significant weight |
|
|
2003 |
Female) |
body weight OR varying doses of |
1x50yd sprint |
performance in both sprints in |
gain within groups |
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|
~ 19 yrs |
dextrose placebo |
1x100yd sprint |
the creatine group |
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|
Division III |
5 x per day, 5 days |
Trend towards reduced |
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|
collegiate |
Maintenance period: 2.25g creatine OR |
performance in both sprints in |
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|
swimmers |
varying doses of dextrose |
the placebo group |
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|
1 x per day, 9 days |
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|
Randomised, double blinded |
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|
Mendes et al. |
18 (12 Male; 6 |
5g Creatine + 20g CHO OR 20g CHO |
1 x 50m sprint |
No effect on performance in |
Significant increase in |
|
|
2004 |
Female) |
4 x per day, 8 Days |
1 x 100m sprint |
either group |
total body mass, lean |
|
|
~ 19 yrs |
Double blind, placebo controlled |
body mass and body |
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|
Competitive |
water in the creatine |
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|
Swimmers |
group only |
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|
No change in bone or |
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|
muscle mass
|
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| † Significant
difference between 1- and 5-minute rest conditions (p < 0.05). § Significant difference between 2- and 5-minute rest conditions (p < 0.05). |