When we consume BCAA, it can indeed increase the speed of protein synthesis in a short time and reduce the speed of protein decomposition, especially the leucine in it. Insufficient leucine will affect the initiation of muscle protein synthesis and can directly stimulate protein synthesis. Rate, and leucine can also synthesize glutamine.
But even if the leucine content in the blood keeps increasing, the protein synthesis rate of our body will eventually decrease. If you want to stimulate the protein synthesis rate again, you have to wait for the synthesis rate to fall back to the bottom line before it can increase again. This is called the "Muscle full effect".
Therefore, although it can directly increase the speed of protein synthesis and reduce protein breakdown, this does not mean that it can help us gain muscle. The short-term increase in synthesis and decrease in decomposition cannot help us increase muscle effectively.
If we supplement BCAA in order to increase muscle mass with sufficient protein intake, it seems completely unnecessary. What's more, many protein powders now have extra BCAA added, but if your protein intake Not enough, then supplementing with it can help make up for the lack of protein to a certain extent, thereby achieving muscle gain.