Sep 15, 2011 3:35 PM GMT
Whats the difference and whats the benefits?
snwbordnick saidits been proven that BCAAs stimulate protein synthesis. Especially leucine. They help synthesis in 2 ways
1: BCAA's increase the rate of protein synthesis.
2: BCAA's increase the cells capacity for protein synthesis.
They also reduce the amount of mRNA produced from the gene that codes for protein breakdown.
Lastly body builders or people looking to build muscle are usually trying to stay as lean as possible and may cut calories by dieting. Dieting is catabolic. BCAA's allow you to burn fat while minimizing the muscle breakdown from dieting.
MuchMoreThanMuscle saidMedjai saidWhy are BCAAs so valued for muscle production when human myosin and actin (the primary muscle motor proteins) are not rich in BCAAs? Are they just really rare in diet and help fill a gap, or are they used in energy metabolism? They don't seem to be high in demand for construction...
Myosin and actin are filaments within muscle the allow for contraction and expansion. These are proteins on a molecular level associated with movement, not with anabolism. They're not one in the same.
purdont4 saidAgree with most of the above.
Remember that there are some 20 AAs. BCAAs are a subset (branched chain amino acids) so the three that have side chains with branches. There are then 17 other AAs that you need and some that are essential (ie. you HAVE to get from diet).
So the point is get some BCAAs but do get some plain AA mixtures. A lot of products will have some sort of blend (either by design or naturally).