Fitness protein powder - protein and amino acids

Fitness protein powder - protein and amino acid

For fitness enthusiasts, especially those who are eager to gain muscle, the names of protein powder and amino acids are familiar with them. Both are considered to be the main raw materials for muscles. Therefore, it is necessary to understand the relationship between protein and amino acids from a fundamental basis.

Protein

Protein is an important component of the body's tissues, the material basis of life, and one of the three major components of the human body. The lack of protein will directly lead to slow growth and development, low immunity, and skin. Skin looseness and early aging.

The protein content in the human body accounts for 16-19% of the body weight, and about 3% of the protein is involved in the body's metabolism. Part of the energy consumed by the human body comes from proteins every day.

Protein is also a variety of substances that have important physiological effects in the body, such as enzymes and hormones that have catalytic and regulatory effects in metabolism, antibodies that transport oxygen, muscle fibrin, collagen, etc.

Amino acids

Protein in the human body (human body) Muscle) consists of more than 20 amino acids in different combinations. The human body eats protein (protein is digested and decomposed) to obtain various amino acids needed to synthesize the body's protein (human muscle).

1. Essential amino acids:

The human body cannot synthesize or synthesizes far from meeting the needs of the body. It must be supplemented from dietary or sports nutritional products. There are 9 types in total: leucine, isoleucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, and histidine.

2. Semi-essential amino acids

Cystine and Merine can be converted from methionine and phenylalanine respectively. When cystine and Merine are abundant, they can save 30% of methionine and 50% of phenylalanine. These two amino acids are also called "semi-essential amino acids".

3. Non-essential amino acids

It is not that protein synthesis in the body is not required, but that it can be synthesized in the human body. When the total nitrogen is insufficient, the synthesis of non-essential amino acids in the body will be restricted, thereby restricting the synthesis of human protein eggs (human muscles).

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The relationship between proteins and amino acids

From an organic chemistry perspective: Protein is a complex organic compound, amino acids are the basic units that make up proteins, amino acids are connected to peptide chains through dehydration and condensation, and proteins are biological macromolecules composed of one or more polypeptide chains.

The intake proteins are digested and hydrolyzed into amino acids and absorbed, and they are resynthesized into proteins needed by the human body. At the same time, the new proteins are constantly metabolized and decomposed, and are always in dynamic equilibrium. Therefore, The quality and quantity of food proteins and the proportion of various amino acids are related to the amount of protein in the human body, especially the growth and development of adolescents, the eugenics and eugenics of pregnant women, and the health and longevity of the elderly, all are closely related to the amount of protein in the diet.

Protein is divided into complete protein and incomplete protein. Rich in essential amino acids and excellent quality proteins are collectively called complete proteins. For example, milk, eggs, fish, meat, etc. are complete proteins, and soybeans in plants also contain complete proteins. Proteins that lack essential amino acids or contain very little content are called incomplete proteins, such as proteins contained in grains, wheat, corn, and gelatin in animal skin bones, etc.

(Note: Follow the WeChat public platform of Fitness Bar, subscribe to search "Fitness Bar Network" or "Click to scan and follow")

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