[MikeMartial]

Green tea extract ingestion, fat oxidation, and glucose tolerance in healthy humans.

Venables MC, Hulston CJ, Cox HR, Jeukendrup AE.
Human Performance Laboratory, School of Sport and Exercise Sciences, The University of Birmingham, Birmingham, United Kingdom.
BACKGROUND: Green tea consumption is reportedly associated with various health-promoting properties. For example, it has been shown to promote fat oxidation in humans at rest and to prevent obesity and improve insulin sensitivity in mice. OBJECTIVE: We investigated the effects of acute ingestion of green tea extract (GTE) on glucose tolerance and fat oxidation during moderate-intensity exercise in humans. DESIGN: Two studies were performed, both with a counter-balanced crossover design. In study A, 12 healthy men performed a 30-min cycling exercise at 60% of maximal oxygen consumption (VO(2)max) before and after supplementation. In study B, 11 healthy men took an oral-glucose-tolerance test before and after supplementation. In the 24-h period before the experimental trials, participants ingested 3 capsules containing either GTE (total: 890 +/- 13 mg polyphenols and 366 +/- 5 mg EGCG) or a corn-flour placebo (total: 1729 +/- 22 mg). RESULTS: Average fat oxidation rates were 17% higher after ingestion of GTE than after ingestion of placebo (0.41 +/- 0.03 and 0.35 +/- 0.03 g/min, respectively; P < 0.05). Moreover, the contribution of fat oxidation to total energy expenditure was also significantly higher, by a similar percentage, after GTE supplementation. The insulin area under the curve decreased in both the GTE and placebo trials (3612 +/- 301 and 4280 +/- 309 muIU/dL . 120 min, respectively; P < 0.01), and there was a concomitant increase of 13% in insulin sensitivity. CONCLUSIONS: Acute GTE ingestion can increase fat oxidation during moderate-intensity exercise and can improve insulin sensitivity and glucose tolerance in healthy young men.

[Forsaken]

Wow, fancy links and colors.


Thanks for the post. Is there a way to know how much tea you would need to drink to get a similar amount of polyphenols? I'd prefer to drink it over pill form.

[MikeMartial]

Originally Posted by Forsaken

Wow, fancy links and colors.


Thanks for the post. Is there a way to know how much tea you would need to drink to get a similar amount of polyphenols? I'd prefer to drink it over pill form.

Somewhere, sometime, in a forum far, far away, someone posted the average amount of polyphenols per cup, made via steeping with a standard bag.

I honestly don't remember the number, but it's here somewhere.

[Forsaken]

Well I know what I'm doing for the rest of the evening.

[Forsaken]

OK, I'm slightly embarrassed.


Green tea vs extract

[ozzie]

Hehe I was about to post that.

[Hbs6]

How much extract did they take, i read through it and couldnt find it...if its there and i missed it then i am stupid...

I think i see it now...i am stupid.

[Clint07]

890mg of polyphenols, which according to the other link is equivalent to ~4cups of brewed green tea.

[Jake Martin]

Originally Posted by Clint07

890mg of polyphenols, which according to the other link is equivalent to ~4cups of brewed green tea.

Goddamn, who needs a preWO energy stack when you're drinking 4 cups of green tea?

That would have me wired out of my mind.

[MikeMartial]

Originally Posted by Forsaken

OK, I'm slightly embarrassed.


Green tea vs extract

LOL you're embarrassed? I was going to say it was Shotokan777 or Erco or someone else. I don't even remember posting that. Wow.