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Sports Supplement Product Review - MET-Rx Xtreme Amped Up Energy

Sports Supplement Product Review - MET-Rx Xtreme Amped Up Energy

Pre-workout Focus and Intensity Booster

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ready to do battle in the gym or during competition.

 Heat Inducer— thermogenic properties raise your body temperature to get you

ı

blistering pace.

 Pre-workout Focus and Intensity Booster— to help you tear through the gym at a

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promoting fat utilization during training sessions.

The main actives of Xtreme Amped Up Energy are caffeine, green tea extract,

chocamine, tyrosine and vinpocetine. So, let’s examine some science behind these ingredients.

Caffeine

Caffeine is probably the most popular performance-enhancing substance known to

mankind. This can partly be attributed to its safety, wide availability and low price. A recent

study by Doherty and Smith at the University of Luton in the UK used the meta-analytic

approach (the process of synthesizing research results by using various statistical methods to

retrieve, select and combine results from previous separate, but related, studies) to examine the

effects of caffeine on athletic performance.

The authors limited their investigation to lab-based, double-blind, fully randomized,

placebo-controlled trials using adult subjects, published in peer-reviewed scientific journals. In

other words, only well-controlled studies were included. As expected, the results clearly indicate

that caffeine improves endurance performance and to lesser extent, high-intensity exercise.

More recently, the same investigators used the meta-analysis approach to examine the effects

of caffeine ingestion on ratings of perceived exertion. In comparison to fake supplementation

(placebo), caffeine reduced ratings of perceived exertion during exercise by 5.6 percent. Not

surprisingly, caffeine also improved exercise performance by 11.2 percent.

As caffeine is a mild diuretic, some have speculated that it may have adverse effects on

an athlete´s fluid balance. However, a comprehensive literature review, published in the

International Journal of Sports Nutrition and Exercise Metabolism

recreational enthusiasts will not incur detrimental fluid-electrolyte imbalances if they consume

[caffeine] in moderation."

Green Tea

Green tea has thermogenic properties and promotes fat burning beyond that explained

by its caffeine content per se. A recent 12-week, double-blind study by Nagao and co-workers

investigated the effects of green tea extract on body fat reduction in healthy men. Interestingly,

the results revealed that bodyweight, waist circumference, body fat mass and subcutaneous fat

areas were significantly lower in the green tea extract group than in the control group.

Specifically, the green tea group lost about 1.4 kilograms of pure lard, while the control group

lost only 0.7 kilograms (1 kilogram equals 2.2 pounds). As expected, green tea treatment had

no adverse effects. In addition, there’s evidence that green tea can improve endurance

performance by increasing utilization of fatty acids as a source of energy in muscles during

exercise.

Chocamine

Chocamine is a proprietary cocoa extract containing numerous constituents. The

combination of these ingredients purportedly produce a unique effect. While scientific evidence

is limited, promotional literature suggests that chocamine increases athletic performance,

suppresses appetite, increases lipolysis, improves mood, increases alertness and so on. The

main actives of chocamine are likely methylxanthines (e.g., theobromine), biogenic amines

(e.g., tyramine) and certain amino acids (e.g., tryptophan).

Tyrosine

Tyrosine, a non-essential amino acid, is essential for the production of catecholamine

transmitters, including dopamine, noradrenaline and adrenaline. A review paper published in

1992 concluded that tyrosine may be useful in counteracting stress-related performance

decrement and mood deterioration by increasing depleted brain noradrenaline levels.

Vinpocetine

Vinpocetine is a synthetic ethyl ester of apovincamine, a vinca alkaloid obtained from

the leaves of the Lesser Periwinkle (Vinca minor). Promotional literature suggests that

vinpocetine supplementation can prove "incredibly efficacious" for athletes who need to be lean

and focused for competition. Vinpocetine increases blood circulation and metabolism in the

brain. In three studies of older adults with memory problems associated with poor brain

circulation or dementia-related disease, vinpocetine produced significantly more improvement

than a placebo in performance on tests reflecting attention, concentration and memory.

However, it’s unclear how vinpocetine affects healthy, young athletes.

Warning

Realize that Xtreme Amped Up Energy is a potent product, so read and follow all label

instructions prior to use. Consult with your physician or a licensed health care professional

before taking this product if you have a medical condition or if you’re taking any medication.

Xtreme Amped Up Energy contains a fair dose of caffeine, so limit use of caffeine-containing

medication, foods or beverages while taking this product. Too much caffeine may cause serious

adverse effects. Don’t use this product if you’re pregnant or nursing.

For more information on MET-Rx supplements, visit their website at www.metrx.com.

If you wish to get your product featured in "Sports Supplement Product Review," e-mail

Anssi Manninen; sportsnutrition@luukku.com.

The author of this article has no financial relationship with MET-Rx.

, concluded, "Athletes and
 Fatty Acid Mobilizer— stimulates lipolysis to increase circulating fatty acid levels,

Founded in 1991, MET-Rx Engineered Nutrition revolutionized the industry with a highprotein

meal replacement product which actually tasted good. Over the years, MET-Rx meal

replacements have been used extensively by athletes and celebrities worldwide. Continuing a

commitment to well-designed products, MET-Rx recently introduced a new product line called

MET-Rx Xtreme.

In this article, I will discuss Xtreme Amped Up Energy, which is designed to amp up

both mental and physical energy levels before training:

Other articles by Anssi Manninen



 

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