FitnessProtein powder - protein and amino acids
For fitness enthusiasts, especially those who are eager to build muscle, the names of protein powder and amino acids are familiar. Both are considered to be the main raw materials for building muscle. Therefore, it is necessary to understand protein and amino acids from the fundamentals. and the relationship between the two.
Protein
Protein is an important component of body tissue, the material basis of life, and one of the three major components of the human body. The lack of protein will directly lead to stunted growth and development, low immunity, sagging skin and premature aging.
The protein content in the human body accounts for 16-19% of the body weight. About 3% of the daily protein is involved in the body's metabolism. Part of the daily energy consumed by the human body comes from protein.
Protein also constitutes a variety of substances with important physiological functions in the body, such as enzymes and hormones that play a catalytic and regulatory role in metabolism, hemoglobin that transports oxygen, and antibodies that play an immune role, muscle fiber proteins, collagen, etc.
Amino acids
Protein in the human body (human muscle) is composed of more than 20 kinds of amino acids in different combinations. The human body obtains synthetic body protein (human muscle) by eating protein (protein is digested and broken down)Various amino acids required.
1. Essential amino acids:
The human body cannot synthesize it or the synthesis rate is far from meeting the needs of the body, so it must be supplemented from diet or sports nutrition. A total of 9 types: leucine, isoleucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, and histidine.
2. Semi-essential amino acids
Cystine and methionine can be converted from methionine and phenylalanine respectively. When cystine and methionine are abundant, 30% of methionine and 50% of phenylalanine can be saved. 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 limited, thus restricting the synthesis of human protein and egg (human muscle).
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