Effects of CreaSafe® on Kidney, Muscle, and Cardiopulmonary Function in Athletes and COPD Patients

Will receive CreaSafe® creatine (0.03 g/kg/day) for 90 days, orally administered diluted in water, every morning (between 7:00 and 9:00 a.m.)

will receive a placebo (microcrystalline cellulose; 0.03 g/kg/day) for 90 days, orally administered diluted in water, every morning (between 7:00 and 9:00 a.m.)