vanndrivende

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PowerUp:
hva er det som egentlig gjør brus, te, øl osv vanndrivende? og derfor ikke bør drikkes etter trening?  :)

emiiiil:
koffein er vel noe vanndrivende. alkohol i seg selv er vel også d...

rolfern:
Koffein er vanndrivende, glukose er vanndrivende, til og med rent vann er vanndrivende:)

Alkohol (og muligens også koffein) virker direkte hemmende på et hormon som heter ADH. Det er dette hormonet som holder tilbake vann i kroppen.

PowerUp:
Sitat fra: rolfern på 09. mai 2011, 16:39

Koffein er vanndrivende, glukose er vanndrivende, til og med rent vann er vanndrivende:)

Alkohol (og muligens også koffein) virker direkte hemmende på et hormon som heter ADH. Det er dette hormonet som holder tilbake vann i kroppen.

thankyou ^^

F..Frank:
Kaffe er ikke direkte vanndrivende, men kan øke hyppigheten på vannlating, og kan derfor ofte oppleves som det.
Jeg fant ikke forskningsrapporten(e) nå, men her er noe som underbygger det:

http://www.brighthub.com/health/diet-nutrition/articles/22963.aspx


What Does Research Say?
The common belief about caffeine’s potent diuretic effects is not supported by research. Most studies have found that caffeine has mild diuretic effects similar to water. In June 2002, a report appeared in the International Journal of Sport Nutrition and Exercise metabolism. The report included vital investigations about caffeine’s diuretic effect. It was conducted by Lawrence E. Armstrong, a well-respected scientist in the field of human performance and thermoregulation. According to Armstrong’s investigations, consuming caffeine had the following results:

• When an individual consumes moderate amounts of caffeine, the body retains some of the fluids

• Regular consumption of caffeine can lead to a higher tolerance to the diuretic effect

• Consuming moderate amounts of caffeinated beverages causes mild diuresis, much similar to water.

• The research concludes there is no evidence of the negative effects of caffeine to exercise performance.

Another study, published in the same journal, in 2005 revealed that caffeine does not cause dehydration. The study involved 59 subjects who were given caffeine in the form of capsule for some days. The subjects were also given a placebo for a few days. Researchers did not find any significant changes in the levels of urine volumes.

So far, research does not confirm about any connections between caffeine and dehydration. It says that caffeine is a mild diuretic and does not have any adverse effect on exercise performance.



Read more: http://www.brighthub.com/health/diet-nutrition/articles/22963.aspx#ixzz1M2TysVvz


Men myten om at kaffe er vanndrivende vil nok alltid leve  ;)
(og noe forskning vil sikkert vise det også :) )

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