... glycogen and its subsequent utilization during performance, Int. J. Sports Med., 2, 114, 1981.42.American College of Sports Medicine, Position stand on exercise and fluid replace-ment, Med. Sci. Sports ... regulation of fat and protein metabolism, gov-erning the activation of and sorting enzymes, identifying cell surfaces and trans-port channels, water absorption and retention, and the delivery ... tissue, hair and nailquality ,and oral mucus membranes. Laboratory evaluations can also be helpfulin looking at red cell mass, serum proteins and albumin, thyroid and sex hormonelevels, and serum...