Which supplement works better to improve cycling performance: sodium or spinach extract?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Sodium
Spinach Extract

Effectiveness Rating: Sodium vs Spinach Extract

The effectiveness rating is a measure of the supplements' ability to improve cycling performance. This rating answers the question of whether or not a supplement does what it claims. The evidence backing up spinach extract is great, while the evidence backing up sodium is good. Spinach Extract should be able to improve cycling performance more effectively, however both supplements should provide positive results.

Confidence Rating: Sodium vs Spinach Extract

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.

Sodium's confidence rating is higher than spinach extract's. This means sodium's effectiveness rating from above is more valid. This does not necessarily mean that sodium works better, it simply means the evidence (included in this database) backing up sodium is more established.