Fitness / / March 29, 2016
again about nutrition and fat burners
On the topic of " fat burners " meet
experts Relatively weak control over the production and sales of sports nutrition makes the athletes and coaches of the victims of marketing campaigns, often built on pseudo-scientific statements, rather than on provenfacts.However, many food supplements is still really effective.They have a direct impact on sporting performance (eg, creatine or caffeine), or are used with the objectives of nutrition (for example, powder meal replacement), contributing to the success of training.
Finally, there are a number of tools that can optimize body composition - namely, to enhance fat burning.
Fat - Dr. Volek: Ephedrine - a adrenergic agonist which activates adrenergic receptors in different cells, including adipose, nerve, and blood vessels and cells of the central nervous system appetite control.
Ephedrine has a significant impact on processes such as lipolysis, thermogenesis, anxiety, heart rate, blood pressure, bronchial muscles dilyatsiya and others.
In combination with caffeine, ephedrine always gives good results in getting rid of excess fat.This combination leads to a decrease in body fat while preserving muscle, which is due to increase thermogenesis (heat production) and reducing the amount of food consumed.
However, 80% of the effect of ephedrine with caffeine on weight loss is necessary to suppress the appetite, and only 20% - an increase in metabolic rate.
Synephrine - a natural alkaloid found in the fruit of bitter orange.It is similar in structure to ephedrine and acts on adrenergic receptors.Unlike ephedrine it specifically interacts with the beta adrenergic receptors 3 (and possibly with the alpha-1-retseptarami), promoting lipolysis.Ephedrine
also binds with a beta-adrenergic receptor-1 and beta-2, stimulating the nervous and cardiovascular system.Thus, synephrine has a marked stimulatory effects (increased metabolic rate, reduces appetite, increases energy level), but without the side effects of ephedrine.
There are a number of data confirming the positive effect of green tea on fat burning.Its bioactive ingredient is EGCG (epigallocatechin epigalokatehina), which increases the oxidation of fat and prevents its accumulation.After 12 weeks of consumption of green tea (catechins 690 mg per day) and the rate of fat burning weight loss doubled.
The study by computed tomography were evaluated levels of both subcutaneous and visceral fat in the abdominal region.Compared with placebo, green tea caused a four-fold reduction in subcutaneous and visceral heat.Thus, the green tea really can locally affect the fat reserves in the abdominal region.
Unlike other fat burning agents provide a sympathetic hormone release and for this reason, raising the heart rate and blood pressure (eg, ephedra), green tea works by using completely different mechanisms.Its catechins inhibit the enzyme that cleaves norepinephrine (noradrenaline), and thus prolong the effects of norepinephrine (increased heart rate, increased lipolysis et al.).
In addition, green tea reduces appetite and inhibits the activity of key enzymes involved in the preservation of fat. Effective dose EGCG is not precisely defined, but studies show the benefits of a dose of 270 mg, divided into three parts of 90 mg for breakfast, lunch and dinner.
Recent experiments have shown that the dietary supplement works even better than the tea.Another study showed that the consumption of food supplements containing catecholamines on an empty stomach (without food) leads to a greater increase in its bionalichiya than welcome with food.
Fat - Dr. Berardi: I always warn people against long stimulants and fat burners.Not only do they pose a risk to the heart (the minimum if you do not have congenital, genetic or acquired heart disease), but can also make it difficult to control the composition of the body in the future.
Artificial metabolic stimulation can give the effect of cancellation in case of failure of the drug, expressed in slowing the rate of metabolism.That is, you will be in top form while taking a dietary supplement, but can not save such, after the failure of her.
Weight loss is not as necessary as we are trying to verify this.Of course, they accelerate the process, helping to achieve short-term goals.They can be used in the last few weeks, for example, before the bodybuilding tournament.It all depends on your goals.
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