Problem
A. What are the goals of metabolic regulation during exercise?
B. How are these goals achieved by the interaction of the sympathetic nervous system and the hormonal system?
C. Why is beta oxidation necessary before fat can be used as an energy substrate?
D. Why is acetyl coenzyme A called the universal common intermediate?
E. Describe the roles of enzymes in the metabolic pathways. Identify the rate limiting enzymes in stages I, III and IV of carbohydrate metabolism. How are enzymes regulated?
F. If athletes generally perform marathon running under intense but steady rate aerobic conditions, why have some reduced capacity to sprint to the finish at race end?
G. What advice would you give to a sprint athlete who plans to carbohydrate load for competition?