—Effect of W and WCP on blood concentrations of total creatine kinase, P1NP and IL-6. Note. Data are presented as mean ± SD for total creatine kinase, P1NP, and IL-6. Subjects participated in a 3-week resistance training program aiming to specifically overload the knee extensor muscles by eccentric contractions. During the intervention period, the subjects received either whey supplements (W, n = 11) or whey protein + collagen peptide supplements (WCP, n = 11) according to a double-blind and randomized study design. #p < .05, both conditions versus pretest. PRE = pretest; TR1+48hr = 48 hr after TR1; POST = posttest; P1NP = procollagen type 1N-terminal peptide; IL-6 = interleukin 6.

Citation: International Journal of Sport Nutrition and Exercise Metabolism 34, 2; 10.1123/ijsnem.2023-0070