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Kreatin är inte bara bra ur et muskelbyggande perspektiv, det har en hel del hälsosamma och kognitiva effekter också.
Fick två studier från en kollega i USA här om dagen som kan vara av intresse:Psychopharmacology (Berl). 2006 Jan 17;:1-11 [Epub ahead of print] Links
Effect of creatine supplementation and sleep deprivation, with mild exercise, on cognitive and psychomotor performance, mood state, and plasma concentrations of catecholamines and cortisol.
McMorris T, Harris RC, Swain J, Corbett J, Collard K, Dyson RJ, Dye L, Hodgson C, Draper N.
Centre for Sports Science and Medicine, University College Chichester, College Lane, Chichester, West Sussex, PO19 6PE, UK, t.mcmorris@ucc.ac.uk.
RATIONALE: Sleep deprivation has a negative effect on cognitive and psychomotor performance and mood state, partially due to decreases in creatine levels in the brain. Therefore, creatine supplementation should lessen the negative effects of sleep deprivation. OBJECTIVES: The objective of this study was to examine the effect of creatine supplementation and sleep deprivation, with mild exercise, on cognitive and psychomotor performance, mood state, and plasma concentrations of catecholamines and cortisol. METHOD: Subjects were divided into a creatine group (n=10) and a placebo group (n=9). They took 5 g of creatine monohydrate or a placebo, dependent on their group, four times a time a day for 7 days, immediately prior to the experiment. The study was double blind. Subjects undertook tests of random movement generation (RMG), verbal and spatial recall, choice reaction time, static balance and mood state pre-test (0 h), after 6, 12 and 24 h of sleep deprivation, with intermittent exercise. They were tested for plasma concentrations of catecholamines and cortisol at 0 and 24 h. RESULTS: At 24 h, the creatine group demonstrated significantly less change in performance from 0 h (Delta) in RMG, choice reaction time, balance and mood state. There were no significant differences between groups in plasma concentrations of catecholamines and cortisol. Norepinephrine and dopamine concentrations were significantly higher at 24 h than 0 h, but cortisol were lower. CONCLUSIONS: Following 24-h sleep deprivation, creatine supplementation had a positive effect on mood state and tasks that place a heavy stress on the prefrontal cortex.
Title: Oral creatine monohydrate supplementation improves brain performance: a double-blind, placebo-controlled, cross-over trial
Author(s): Rae and others
Source: Proceedings: Biological Sciences
DOI: 10.1098/rspb.2003.2492
Publisher: The Royal Society
Abstract: Creatine supplementation is in widespread use to enhance sports-fitness performance, and has been trialed successfully in the treatment of neurological, neuromuscular and atherosclerotic disease. Creatine plays a pivotal role in brain energy homeostasis, being a temporal and spatial buffer for cytosolic and mitochondrial pools of the cellular energy currency, adenosine triphosphate and its regulator, adenosine diphosphate. In this work, we tested the hypothesis that oral creatine supplementation (5 g d-1 for six weeks) would enhance intelligence test scores and working memory performance in 45 young adult, vegetarian subjects in a double-blind, placebo-controlled, cross-over design. Creatine supplementation had a significant positive effect (p < 0.0001) on both working memory (backward digit span) and intelligence (Raven's Advanced Progressive Matrices), both tasks that require speed of processing. These findings underline a dynamic and significant role of brain energy capacity in influencing brain performance.Intressant läsning. Finns det någon studie som artikel nr 2 där de har testat 5 g kreatin (kan vara andra doser också) på ”vanliga” blandkostare?
Jag har provat kreatin nåra ggr och känner inte ett skit. SÄkerligen är det individuellt eftersom vissa får effekt av det. Dock slänger jag nog mina pengar på extra protein istället.
Jacksatan wrote:Jag har provat kreatin nåra ggr och känner inte ett skit. SÄkerligen är det individuellt eftersom vissa får effekt av det. Dock slänger jag nog mina pengar på extra protein istället.Samma här tyvärr. Jag ska dock ge det ett rejält försök här i vår, tror jag har slarvat när jag tagit det tidigare.
Andreas Guiance wrote:Samma här tyvärr. Jag ska dock ge det ett rejält försök här i vår, tror jag har slarvat när jag tagit det tidigare.Jag har en teori om detta: ett dyrare kreatinpreparat skulle vara bättre för dig
. Det kan var likvärdigt i sitt innehåll, men folk har en tendens att slarvar mindre med saker som kostar mer. 
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