Stimulants are compounds that raise the state of alertness. It is a set of compounds that are naturally found in some foods (caffeine, theobromine, theophylline), but during the technological process they are artificially added. Their level in the final product is regulated by good manufacturing practice. Especially present in tea, coffee, cocoa and various soda juices.
It is alkaloid present in some groceries (coffee, tea, Coca-Cola). It increases blood pressure, stimulates kidney function, temporarily removes fatigue, increases concentration, raises mood, and stimulates activity, but if it is consumed often, the effects could be counterproductive, since then it is depressing.
Insomnia and other hurdles are a consequence of chronic intoxication with caffeine during the day (3-5 cups of coffee or a larger amount of Coca Cola) in some people.
One cup of coffee contains 60 mg, and if it is stronger, about 100 mg of caffeine. Brazilian cocoa paste is considered to be the most natural caffeine, containing about 2.7-6.4%. Tea is also a great source of caffeine (50-60 mg / 100ml), which is important for those who consume it several times a day. Garlic juices contain 12-18 mg / 100 ml.
Sensitive persons and children may show symptoms of acute intoxication (trembling, headache, body weakness) after only one or two cups of espresso coffee, where there are about 120 mg of caffeine or several cups of Coca Cola, where there is an average of 40-60 mg of caffeine.
COFFEE AND SPORTSISTS
If optimal optimum time is consumed, caffeine can extend the time needed to reach the fatigue limit.
The International Olympic Committee treats caffeine as a drug, i.e. limits the urinalysis of the competitor. A concentration of 12 mg / l is acceptable, but anything beyond that is considered doping. About 8 cups of strong coffee can show in the urine as much as 1 000 mg / l!
The greater the “caffein climb” of caffeine, the greater the fall: the greater the dose does not fix, but worsens the situation! The more it is consumed, the effect of caffeine is weaker.
According to numerous studies, caffeine helps in the metabolism of fats by mobilizing fatty acids, with simultaneous reduction in glycogen consumption in prolonged training or in marathon, which is certainly positive for its effect. When optimal optimum time is used, caffeine can extend the time needed to reach the fatigue limit.Recent well-controlled studies have shown that, if consumed at a dose of 3-6 mg / kg body mass, an hour before the event, caffeine improves endurance.
In a study conducted on cyclists, the researchers went a step further so that a dose of 9mg / kg body mass was used, with an increased durability of at least 44%.
Of course, there is another side of the medal, which shows that caffeine increases urine secretion (diuresis), which encourages loss of body fluids. Dehydration in which athletes are particularly sensitive remains an open problem when consuming caffeine, so the claim that caffeine beverages cause, instead of quenching thirst, to be in place!
WITH COFFEE YOU SHOULD KNOW HOW. Consumption of caffeine during matches is, as a rule, wrong, especially if it is time-dragging. In many weight loss formulas, caffeine is a regular component because it is believed to accelerate the fatty acid metabolism and helps in the process of fat burning. However, caffeine has proven to speed up basal metabolism, meaning – calorie intake, accelerates breathing, urine production, and gastric acid.
HOW DOES THE COFFEIN WORK?
Caffeine is already in the blood for 15 minutes after consumption, and while it’s there, it works! Because it acts as a stimulant to the central nervous system, caffeine increases the work of the heart, which means it works better, and the periphery is better understood by oxygen. Proved shortens the reaction time, auditory and visual. At the same time, this action can be felt in the improvement of mood, concentration and motivation (mild euphoria).
Without a doubt, for athletes it is desirable and positive effect of caffeine. But such action lasts briefly (30-60 minutes), and then another (depressing) phase occurs. The higher the flight, the greater the fall: the greater the dose does not repair, but worsens the situation! The more consumed it is, the less it works. Experts agree that there is addiction / habit of caffeine, and some even classify it in weak drugs!
The use of caffeine from foods (where, tea, guarana) or as a pure pharmaceutical form in the form of tablets or capsules is a matter of choice. Each caffeine is effective, however, it seems that espresso coffee is the most comfortable form for the people who support it.
It should be noted that, unlike pure caffeine tablets, coffee contains numerous other compounds (theophylline, paraxanthin, theobromine) which in combination with caffeine act differently! Yet, a group of researchers led by Dr. Graham in volunteer experiments showed the opposite, i.e. that caffeine in the capsules increases durability and moves the boundary of fatigue, unlike caffeine in coffee. Although this phenomenon is difficult to explain, it seems that in caffeine, however, something is causing the effect of caffeine.
Moderate doses of caffeine are about 250mg / day, which means 3-5 cups of coffee, but of course this is individually. Insomnia is the first sign that it is an exaggeration. Increased doses or long-term caffeine consumption can cause weakness, headache, nervousness, rapid pulse, fever, nausea, and even vomiting. Any generalization of caffeine reactions is a big mistake. The degree of sensitivity differs from person to person, for which everyone should take care.