Proteins are essential for human growth and metabolism, and athletes benefit from higher protein intake to maintain muscle mass and ensure proper performance. But when it comes to determining the best protein source, it can be difficult to know which one is the most bioavailable. In this article, we'll explore the different methods used to measure protein quality, such as the Protein Efficiency Ratio (PER), Biological Value (BV), Net Protein Utilization (NPU), and Amino Acid Score Corrected for Protein Digestibility (PDCAAS). We'll also discuss why whey protein is considered to be the most bioavailable protein source.
What are Proteins?Proteins are substances that contain nitrogen and are made up of amino acids.
They are used to produce hormones, enzymes, and hemoglobin, and can also be used for energy, although they are not the main choice as an energy source. For the body to use proteins, they must be metabolized in their simplest form, amino acids. Twenty amino acids have been identified that are necessary for human growth and metabolism, twelve of which are non-essential and can be synthesized by the body. The remaining eight are essential and must be consumed in our diet.
Why Do Athletes Need Higher Protein Intake?Athletes benefit from higher protein intake, as it helps to maintain muscle mass and ensure proper performance.
Several studies have determined that protein intake for endurance athletes should be between 1.2 and 1.4 g·kg-1·day-1 to ensure a positive nitrogen balance.
What Are the Different Methods Used to Measure Protein Quality?When determining protein quality, several methods can be used such as the Protein Efficiency Ratio (PER), Biological Value (BV), Net Protein Utilization (NPU), and Amino Acid Score Corrected for Protein Digestibility (PDCAAS). The PER determines the effectiveness of a protein by measuring animal growth, while the BV measures how efficiently the body uses the proteins consumed in the diet. The NPU is similar to BV, except that it involves a direct measure of the retention of absorbed nitrogen. The PDCAAS is currently the most accepted and used method, but there are still limitations related to overestimation in older people, the influence of iyal digestibility, and anti-nutritional factors.
Why Is Whey Protein Considered to Be the Most Bioavailable Protein Source?Animal sources tend to have a higher biological value than plant sources due to the lack of one or more of the essential amino acids in the plant source.
However, whey protein is considered to be the most bioavailable protein source due to its high quality and digestibility. Whey protein is a complete protein source that contains all nine essential amino acids. It is also easily digested and absorbed by the body, making it an ideal choice for athletes looking for a high-quality protein source. In conclusion, whey protein is considered to be the most bioavailable protein source due to its high quality and digestibility. It is a complete protein source that contains all nine essential amino acids and is easily digested and absorbed by the body.