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Ver la versión completa : Creatina, memoria y vegetarianos



harprakash
13-ago-2013, 09:43
Interesante estudio:

http://www.ncbi.nlm.nih.gov/pubmed/21118604


Creatine when combined with P forms phosphocreatine that acts as a reserve of high-energy phosphate. Creatine is found mostly in meat, fish and other animal products, and the levels of muscle creatine are known to be lower in vegetarians. Creatine supplementation influences brain functioning as indicated by imaging studies and the measurement of oxygenated Hb. Given the key role played by creatine in the provision of energy, the influence of its supplementation on cognitive functioning was examined, contrasting the effect in omnivores and vegetarians. Young adult females (n 128) were separated into those who were and were not vegetarian. Randomly and under a double-blind procedure, subjects consumed either a placebo or 20 g of creatine supplement for 5 d. Creatine supplementation did not influence measures of verbal fluency and vigilance. However, in vegetarians rather than in those who consume meat, creatine supplementation resulted in better memory. Irrespective of dietary style, the supplementation of creatine decreased the variability in the responses to a choice reaction-time task.

Aquí el estudio completo:

http://www.scribd.com/doc/45067875/Influence-of-Creatine-Suppl-on-Cognitive-Function-of-Vegetarians-and-Omnivores

nessie
13-ago-2013, 09:47
Ahora viene la avalancha de gente preguntando donde comprar creatina vegana :P

harprakash
13-ago-2013, 10:38
Ahora viene la avalancha de gente preguntando donde comprar creatina vegana :P

Es lo que tiene la sobreinformación :D

P.D.: en teoría toda la creatina es vegana.

harprakash
13-ago-2013, 11:35
Y hay más estudios al respecto: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1691485/

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.

JOSE HURTADO
14-ago-2013, 22:45
EXCELENTE!!!!!!!!!!.Con esta informacion estoy completo.
Gracias.

exitos

ruu
10-oct-2013, 17:13
a ver si he pillado la idea... los veganos/vegetarianos estan mas escasos de creatina q los que comen carne?
esq el ingles me falla bastante jajajja

Veganofilo
21-dic-2013, 15:54
Br J Nutr. 2013 Nov 29:1-3.

Brain creatine depletion in vegetarians? A cross-sectional 1H-magnetic resonance spectroscopy (1H-MRS) study.

Yazigi Solis MY, de Salles Painelli V, Artioli GG, Roschel H, Otaduy MC, Gualano B.

Abstract

The present cross-sectional study aimed to examine the influence of diet on brain creatine (Cr) content by comparing vegetarians with omnivores. Brain Cr content in the posterior cingulate cortex was assessed by proton magnetic resonance spectroscopy (1H-MRS). Dietary Cr intake was assessed by 3 d food recalls. Vegetarians had lower dietary Cr intake than omnivores (0·03 (sd 0·01) v. 1·34 (sd 0·62) g/d, respectively; P= 0·005). However, vegetarians and omnivores had comparable brain total Cr content (5·999 (sd 0·811) v. 5·917 (sd 0·665) IU, respectively; P= 0·77). In conclusion, dietary Cr did not influence brain Cr content in healthy individuals, suggesting that in normal conditions brain is dependent on its own Cr synthesis.

http://www.ncbi.nlm.nih.gov/pubmed/24290771


Jack Norris ha comentado este artículo: http://jacknorrisrd.com/brain-creatine-content-in-vegetarians-vs-omnivores/

Riply
21-dic-2013, 19:58
Y los que no entendemos ingles.....nos servira el traductor de Google?

Ecomobisostrans
21-dic-2013, 20:37
Traduzco con Google:

Agotamiento de creatina cerebral en los vegetarianos? Una espectroscopia de resonancia magnética-1H de la sección transversal (1H-MRS) estudio.

Yazigi Solis MY, de Salles Painelli V, Artioli GG, Roschel H, Otaduy MC, Gualano B.

abstracto

El estudio transversal presente investigación se evaluó la influencia de la dieta sobre la creatina cerebral (Cr) contenido comparando los vegetarianos con los omnívoros. El contenido cerebral de Cr en la corteza cingulada posterior se evaluó mediante espectroscopia de resonancia magnética de protón (1H-MRS). La ingesta de Cr dietética fue evaluada por 3 d la retirada de alimentos. Los vegetarianos tenían menor ingesta dietética Cr que los omnívoros (0,03 (sd 0,01) v 1.34 (DE 0,62) g / d, respectivamente, p = 0,005). Sin embargo, los vegetarianos y omnívoros tenían un contenido comparable cerebro Cr total (5.999 (sd 0.811) contra 5.917 (SD 0.665) UI, respectivamente, p = 0,77). En conclusión, Cr dietética no influyó cerebro contenido de Cr en individuos sanos, lo que sugiere que en condiciones normales el cerebro es dependiente de su propia síntesis Cr..

harprakash
21-dic-2013, 22:40
Gracias por el estudio pero ni explica ni invalida que la suplementación de creatina siga siendo beneficiosa para la memoria/inteligencia en vegetarianos.

Ecomobisostrans
21-dic-2013, 23:29
¿Si dice que no influye en absoluto en qué mejora la memoria/inteligencia?