Anabolic steroids – a class of pharmacological agents, which by their chemical structure and pharmacological action similar to testosterone, as its derivatives. They reinforce the processes of synthesis of nucleic acids, proteins in cells, various enzymes and, thereby, affect virtually all types of metabolism in the body. This eventually leads to an increase in body weight due to the strong growth of muscle tissue, decrease body fat percentage and increase in physical performance: speed-strength and endurance. There are two effects of the testosterone: an androgenic and anabolic.
Androgenic effects (masculinization) manifested in the development of secondary male sex characteristics – height and body structure – narrow hips, broad shoulders, men’s facial features, less fatty tissue, hair on face, deep voice, which is typical for men libido, aggressiveness in behavior and etc. Anabolic steroids stimulate the synthesis of new cells, boost energy production in the body. This explains why anabolic steroids enable a more lasting and intensive training, as well as increase the strength of athletes, even without a significant increase in body weight. It should be noted that there is increased function of cellular respiration and oxygen-transport function of blood, as the total number of red blood cells and blood increases. Anabolic steroids reduce thrombus formation in microvessels, as well as reduce blood clotting, which is essential for the improvement of microcirculation in intensive physical work. In the past decade, researchers found that during intense physical work in the body accumulate free radicals that have harmful effects on biological membranes, energy metabolism and many other features that contribute to the implementation exercise. These are the factors limiting athletic performance. The decrease in their number, binding and prevention of adverse effects leading to normalization of cell activity and restore strength and speed.
Almost all anabolic steroids have such properties, providing an antioxidant effect in humans. This fact has been known for more than 20 years, but that it is directly related to the sport, it became apparent recently. Some researchers believe that anabolic steroids reduce the disintegration of muscle fibers resulting from intense workouts. This implies a possible restriction of the activity of cortisol – the catabolic hormone human. There is a view that steroids help to reduce the number of catabolic hormone entering the muscle tissue. Reduction of cortisol enhances the action of anabolic steroids with all the ensuing consequences. Steroid anabolic steroids also act on cells of other organs, except for muscle, since they have a universal effect in humans. However, any impact of steroids, other than those listed above, the positive, is considered an unwanted side reaction.
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