Which supplement works better to improve cardiovascular endurance: peak o2 or whey protein?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Peak O2
Whey Protein

Effectiveness Rating: Peak O2 vs Whey Protein

The effectiveness rating is a measure of the supplements' ability to improve cardiovascular endurance. This rating answers the question of whether or not a supplement does what it claims. The evidence shows peak o2 is better than whey protein in its ability to improve cardiovascular endurance. Peak O2 should provide some positive results while whey protein will not.

Confidence Rating: Peak O2 vs Whey Protein

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 peak o2 and whey protein 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.