Which supplement works better to improve muscular endurance: betaine or branched chain amino acids?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Betaine
Branched Chain Amino Acids

Effectiveness Rating: Betaine vs Branched Chain Amino Acids

The effectiveness rating is a measure of the supplements' ability to improve muscular endurance. This rating answers the question of whether or not a supplement does what it claims. The evidence shows betaine is better than branched chain amino acids in its ability to improve muscular endurance. Betaine should provide some positive results while branched chain amino acids will not.

Confidence Rating: Betaine vs Branched Chain Amino Acids

Another factor to take into account when comparing supplements is the confidence rating. This rating is a measure of how valid each supplement's effectiveness rating is. Remember, the confidence rating is a measure of how much you can trust the effectiveness rating. This rating is based on how many studies are included in the database on a supplement's claims. Ideally, you want a high effectiveness AND confidence rating.

Both betaine and branched chain amino acids have low confidence ratings. This means neither supplement has an adequate amount of research to back up this claim. A low confidence rating questions the validity of the effectiveness rating.