What are BCAA’s

what are BCaas
BCAA’s are known as Branch Chain Amino Acids and are made up from the essential amino acids leucine, isoleucine, and valine. These 3 amino acids combined make up roughly 33% of our skeletal muscle and play a very important role in numerous biological processes within the body, perhaps most important for athletes is protein synthesis which is the production of proteins in cells from amino acids to build and increase muscle mass.

What Do BCAA’s Do Pre-Workout?

BCAA’s have been shown to reduce muscle breakdown during intense training by creating a more anabolic environment within the working muscles, therefore a lot of athletes will take BCAA’s pre-workout to ensure their training becomes more anabolic and less catabolic, especially bodybuilders wanting to keep muscle mass. Furthermore it must be noted BCAA’s are actually metabolised in the muscles and not the stomach, which is one unique property that scientists believe is responsible for their anti-catabolic properties.

what are bcaa’s What Do BCAA’s Do Post-Workout?

Whilst BCAA’s have been shown to help athletes before training, it also seems they have benefits after training as well. Specifically this is related to the amino acid leucine and how it increases protein synthesis. As previously stated protein synthesis is a term used to describe the synthesis of new skeletal muscle proteins. When it happens on a larger scale it’s known as muscular hypertrophy and it’s basically the process that athletes want when they are looking to increase the size of their muscles. Now resistance training provides the necessary stimulus to your muscles for them to repair and regrow bigger, however the initial bout exercise actually results in a negative net protein balance i.e. overall muscle breakdown (S.M Phillips, 1997). This negative net protein balance must be counteracted as soon as possible straight after your workout if you want to start building muscle and scientists are in agreement that the best way to do this is to ingest a quick releasing protein such as whey concentrate with the amino acid leucine. Until this is consumed it’s believed the protein balance will remain negative and the ‘stimulus’ of weight training will be ineffective (T.A. Gautsch, 1998).

BCAA’s For Recovery

As well as helping to preserve muscle mass and also increase protein synthesis post workout, studies have also shown BCAA’s can help maintain a healthy immune system during periods of intense training when it could become compromised. According to researchers at the Department of Physiology and Biophysics at the Institute of Biomedical Sciences in Brazil, it does this by favourably interfering with the body’s lymphocytes. These are a type of cell within the body that help to fight viruses and infection.


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