Jakie są korzyści z wykorzystywania kofeiny?

Caffeine is an alkaloid that has the capability of stimulating the central nervous system. It is derived from plants such as coffee, tea, yerba mate, guarana, coca, and others. Caffeine is employed in bodybuilding due to its ability to block adenosine receptors, stimulate adrenaline release, increase sensitivity to calcium, and inhibit the enzyme phosphodiesterase. Caffeine resembles adenosine, hence it binds to its receptors and creates a false sense of stimulation, however, neither the brain nor other body systems undergo regeneration.

If you are interested in eliminating excess body fat, caffeine will undoubtedly assist you in doing so. Regardless of whether you are working or resting, caffeine increases the concentration of free fatty acids in your bloodstream, which promotes the utilization of subcutaneous fat as fuel. More than 20 years ago, researchers at the Human Performance Laboratory at Indiana University demonstrated that the participants' blood tissue free fat content increased by 100% after consuming less than 330 grams of caffeine. Additionally, it was found that caffeine increases the level of fat oxidation during aerobic exercise. In one experiment, the amount increased by 50 percent after ingesting 5 milligrams of caffeine per kilogram of body weight. Caffeine exhibits a phenomenal effect when it comes to burning fat during aerobic exercise. For instance, an individual weighing 77 kg would burn approximately 800 calories during an hour-long run of medium intensity, and half of that would be burned through fat oxidation. If caffeine is taken in addition, the fat oxidation level increases by 50%, resulting in an extra 200 calories of fat burned. This means that a total of 600 calories are burned through fat oxidation and 200 calories are burned through sugar breakdown.

The physiological effects of caffeine consumption have not yet been fully investigated. However, it has been shown that caffeine triggers three biological reactions in the body: - Caffeine’s fat-burning properties, which also increase overall oxygen efficiency. During aerobic training, the body burns a large amount of fat and limited quantities of glycogen. As the body depletes glycogen, its efficiency decreases. Administering caffeine increases the level of free fatty acids in the blood, resulting in the glycogen-sparing effect. The body then uses more fat, while the breakdown of glycogen decreases, delaying fatigue and allowing for longer duration of work; - Caffeine enhances muscle functionality, aiding in their contraction. Before muscle contraction, calcium ions should be released in its cells. Caffeine increases the sensitivity of cells and the availability of calcium in them. In this case, muscles require less stimulation for work, allowing for work with less effort. Furthermore, it has been established that caffeine increases the contractility of the diaphragm, suggesting that exercise will be easier; - Caffeine affects the central nervous system, masking the sensation of fatigue. The mechanism of action is difficult to describe, but it has been proven that caffeine crosses the blood-brain barrier. Studies have shown that individuals who consumed caffeine were more likely to choose higher intensity levels, although their perception was similar to that of lower loads.

Numerous researchers have focused on the impact of caffeine on the oxygen performance of the human body. The most frequently cited experiment was conducted in 1978 in the state of Indiana, which was mentioned above. By consuming 5 milligrams per kilogram of body weight, participants were able to train on an ergometer for 20% longer. Since then, caffeine's impact on oxygen performance has been validated in many studies. In fact, efficiency was proven to have increased, and work duration was extended by 50%. In one trial, a participant increased his overall aerobic performance by a staggering 156%. The results of studies on the effect of caffeine on anaerobic efficiency are not as convincing, but there is evidence pointing to the possibility of increasing muscular endurance and anaerobic efficiency. In 1992, participants, after consuming 250 mg of caffeine, displayed a 7% increase in efficiency. Caffeine has a multi-faceted effect, improving oxygen performance, boosting muscular endurance, and enhancing anaerobic efficiency. However, the sole indicator where no impact of caffeine has been shown is muscle strength, although research in this area is ongoing.