Gelatin, Collagen, Gummy and PINP

The study is aimed at determining if the same dose of gelatin, hydrolyzed collagen (administered in a beverage form) or a mixture gelatin/hydrolyzed collagen (administered in a gummy form) with a standard dose of vitamin C (50 mg) has a similar effect a marker of collagen synthesis (PINP). In a randomized, crossover design subjects consume 3 different nutritional supplements: (a) 15 of gelatin, (b) 15 hydrolyzed collagen (administered in a beverage form) or (c) 15 g of gelatin/hydrolyzed collagen mixture all with a standard dose of vitamin C (50 mg) 1 hour prior to exercise stimulus (6 minutes of jump rope). A baseline assessment with only the jump rope and no intervention will also be conducted prior to the interventions. Each intervention will be separated by a \>24 hr washout. Following completion of exercise, subjects will remain in the lab in a rested state for the subsequent 4 hours. After 4 hours blood samples will be collected. Blood samples will be used for PINP analysis.