Which supplement works better to increase strength: soy protein or whey protein?

Ratings at a Glance

Supplement	Effectiveness Rating	Confidence Rating
Soy Protein
Whey Protein

Effectiveness Rating: Soy Protein vs Whey Protein

The effectiveness rating is a measure of the supplements' ability to increase strength. This rating answers the question of whether or not a supplement does what it claims. Both soy protein and whey protein have great evidence backing up their ability to increase strength. They should both provide positive results.

Confidence Rating: Soy Protein 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 soy protein and whey protein have great confidence rating. This means both supplement's effectiveness ratings above are valid.