What Are The Three Sources Of Energy For Humans During Exercise

Our ability to run bicycle ski swim and row hinges on the capacity of the body to extract energy from ingested food.

What are the three sources of energy for humans during exercise.

Energy system one aerobic. As potential fuel sources the carbohydrate fat and protein in the foods that you eat follow different metabolic paths in the body but they all ultimately yield water carbon dioxide and a chemical energy called adenosine triphosphate atp. Aerobic glycolysis has a slow rate of atp production and is predominantly utilized during longer duration lower intensity activities after the phosphagen and anaerobic systems have fatigued. Atp pc anaerobic glycolysis and aerobic phosphorylation.

The regulation of fuel selection during exercise is under complex control and depends on several factors including diet as well as intensity and duration of exercise 3. The three metabolic energy pathways are the phosphagen system glycolysis and the aerobic system. Instead the body has three different systems of atp production. The aerobic energy system is the most complex of the three using oxygen to create something called glycolysis and ultimately produce that all important atp.

The body uses carbohydrate fat and protein to provide necessary energy to sustain cellular activities both at rest and during exercise 3. It is important to remember that all three of these systems contribute to the energy needs of the body during physical activity. Albert einstein in his infinite wisdom discovered that the total energy of an object is equal to the mass of the object multiplied by the square of the speed of light.