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31.12.2009


Coffee stacked with synephrine and HCA boosts post-training energy burning

JavaFit Energy Extreme, coffee to which a proprietary blend of stimulants has been added, makes no difference to your aerobic or anaerobic capacity, but does raise energy burning levels after short intensive training sessions. American supplements researchers report this in the Journal of the International Society of Sports Nutrition.


JavaFit Energy Extreme is a functional food made by supplements guru Jose Antonio. Antonio came up with the idea that you can boost the stimulant properties of coffee by adding a mix of energy boosters to it.

The most important ergogenic component that Antonio put in JavaFit Energy Extreme is ordinary caffeine. A dose of 3 mg/kg bodyweight of caffeine increases your stamina. To improve your high intensity short duration efforts you need a dose of about 5 mg/kg bodyweight.

Another active ingredient in JavaFit Energy Extreme is Citrus aurantium, a plant extract containing synephrine and octopamine, both adrenalin analogues. Of these two substances, it is synephrine that has been shown to stimulate fat cells to release fat in animal and test-tube studies.

JavaFit Energy Extreme also contains Garcinia cambogia and chromium nicotinate.

In an earlier article sports scientists showed that athletes who drank JavaFit Energy Extreme managed to cycle for longer at 75 percent of their VO2max, but didn’t go faster [J Strength Cond Res. 2007 May;21(2):456-9.] In the present study, the researchers first had ten healthy recreational athletes drink 350 ml super-coffee, which contained 450 mg caffeine, 1200 mg Garcinia cambogia, 360 mg Citrus aurantium and 225 mcg chromium nicotinate. On another occasion the subjects got decaf.

Then the researchers got the subjects to cycle as hard as they could for a few minutes so that they could measure their aerobic and anaerobic capacity. The super-coffee had no effect at all. But it did have an effect on the oxygen consumption after the training sessions – the excessive post-exercise oxygen consumption or EPOC. See the graph below.



The researchers think that Antonio’s super-coffee affects muscle cells as they recover after exertion in such a way that they make more phosphate groups and glycogen, and as a result the oxygen consumption goes up. For this, the muscle cells may use fat.

"Excessive post-exercise oxygen consumption (EPOC) has been postulated to be a thermogenic process whereby fatty acids are oxidized in order to replenish the abovementioned fuel stores", the researchers write. "EPOC can be elevated due to exercise-induced increases in thermogenic hormones including catecholamines following exercise."

Source:
Journal of the International Society of Sports Nutrition 2007, 4:25.

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