Question

during prolonged high intensity exercise (lasting 4 hours), chemical energy from which of the following is used to make the most ATP? A) Protein B) Carbohydrate C) Fat D) Fat and Protein in same amounts

Answer 1

answer : B) Carbohydrate

explanation:

Under most circumstances, fat and carbohydrate are the fuels utilized during exercise. The degree to which each fuel acts as the primary or secondary source of energy and the efficiency with which energy is utilized depends on the prior nutrition of the athlete and the intensity and duration of the exercise. At low levels of prolonged exercise most energy needs come from fat and lesser energy needs come from carbohydrate. At higher intensity carbohydrate plays a greater role but is limited in its duration of action.