Tempo de Leitura: 2 minutos

What is it?

The muscle is formed by fibers that have the characteristic of contracting and stretching, these are part of the muscular system of the human body, whose cellular composition is formed largely by filamentous proteins. The musculoskeletal, cardiac striatum, cardiac striatum and smooth muscle are presented in the organism. Due to their great specificity, the components of muscle cells are given different denominations in which the cytosol is the sarcoplasma, the cell membrane is the sarcolema and the endoplasmic reticulum is the sarcoplasmic reticulum.

What’s the muscle for?

Among the functions that the muscle performs, those of support, stability, movement, contraction and production of energy/force, by transforming chemical energy into mechanics, are predominant. Recent studies also illustrate the endocrine function of the muscle in which the production and release of substances such as prostaglandins and mycins occurs, the latter, released in the post-exercise period that acts in signaling the process of muscle hypertrophy.

How does muscle work?

The muscle is formed by thousands of organized muscle fibers that form the bundles covered by the epimisium. Perimysium is composed of septa of connective tissue, which divides the muscle bundles and still between the fibers there is a thin layer of connective tissue called endomysium, which irrigates the muscle through its blood capillaries. In addition to this cellular organization, it is controlled by the nervous system and regulated by some nutrients, such as calcium, an indispensable mineral for the process of muscle contraction, a process that generates energy expenditure.

When do you need to supplement?

With regard to supplementation, whey protein and creatine are the two most widely used supplements, whose level of scientific evidence is extremely high to support their use. In this sense, for maintenance, gain of muscle mass and strength, these components can be indicated in addition to the association with regular strength training.


McGlory, C., van Vliet, S., Stokes, T., Mittendorfer, B., & Phillips, S. M. (2019). The impact of exercise and nutrition on the regulation of skeletal muscle mass. The Journal of physiology

, 597

(5), 1251–1258.

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