Which supplement works better to improve cycling sprint performance: n-acety-l-cysteine or polyphenols?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
N-Acety-L-Cysteine
Polyphenols

Effectiveness Rating: N-Acety-L-Cysteine vs Polyphenols

The effectiveness rating is a measure of the supplements' ability to improve cycling sprint performance. This rating answers the question of whether or not a supplement does what it claims. The evidence backing up polyphenols to improve cycling sprint performance is much better than the evidence backing up n-acety-l-cysteine. Polyphenols should provide positive results while n-acety-l-cysteine will not.

Confidence Rating: N-Acety-L-Cysteine vs Polyphenols

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 n-acety-l-cysteine and polyphenols 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.