Collagen may increase power

Muscle contains hundreds of proteins, and doctors wanted to see if collagen—the main structural protein in the body— along with resistance training, would influence the protein makeup of muscle. 

In this study, 25 men, average age 24, with a healthy weight and a good ratio of fat-free mass to fat mass, took a placebo or 15 grams of collagen hydrolysate per day within one hour of completing resistance training designed  to build muscle. There were three training sessions per week over the 12-week study period. Both groups saw increases in strength, with strength in the collagen group increasing slightly more than placebo.

Analyzing protein levels, doctors found higher levels of 221 proteins in the collagen group compared to 44 for placebo. Most of the increased proteins in the collagen group were responsible for controlling muscle contraction. 

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