Which supplement works better to improve running performance: eicosapentaenoic acid (epa) or glycine?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Eicosapentaenoic Acid (EPA)
Glycine

Effectiveness Rating: Eicosapentaenoic Acid (EPA) vs Glycine

The effectiveness rating is a measure of the supplements' ability to improve running performance. This rating answers the question of whether or not a supplement does what it claims. The evidence shows glycine is better than eicosapentaenoic acid (epa) in its ability to improve running performance. Glycine should provide some positive results while eicosapentaenoic acid (epa) will not.

Confidence Rating: Eicosapentaenoic Acid (EPA) vs Glycine

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 eicosapentaenoic acid (epa) and glycine 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.