Exercise significantly increases myofibrillar and muscle contractile tissue protein synthesis, dairy protein primarily increases myofibrillar protein synthesis, and collagen protein has a minimal effect on both.

“when you look at exercise you see that it gives a huge increase in both myofibrillar muscle protein synthesis and muscle contractile tissue when you look at dairy protein you get a big increase in myofibrillar but not in contractile and I think that's not surprising and when you look at collagen protein it's relatively small on both”