What Is The Best Source Of Energy During Exercise

During exercise there are four major endogenous sources of energy.

What is the best source of energy during exercise.

What summarizes the relationship best is moderate exercise like a 10 or 15 minute walk has the primary effect of increased energy while very intense exercise like working out at the. The amount of carbohydrate that can be stored in the body as glycogen depends on diet and the athlete s conditioning level. While at rest and during low intensity exercise free fatty acids are the predominant energy sources. And anaerobic glycolysis the breakdown of glucose which is the primary energy source for high intensity exercise of one to three minutes say an 800 meter race.

Phosphocreatine as with all out 100 meter sprints exercise under 30 seconds. Moreover fats are the primary fuel source for muscle during low intensity exercise 2 although most fat is stored in the form of triglycerides in fat cells some is stored in muscle cells. An alternative energy source to protein being used for energy. During physical exercise stored carbohydrate or glycogen is converted into energy to fuel the muscles but this supply is not endless.

Therefore while it is true that fat contributes a greater percentage of the total energy during lower intensity exercise at higher intensity exercise the total quantity of fat utilized may be greater for exercise performed for an equivalent period of time. High intensity exercise of a short duration requires anaerobic sources of atp. As exercise intensity increases the number of calories burned also increases. The process by which fatty acids and other sources are converted to energy during low intensity exercise.

Nutrients provide the energy sources for all forms of exercise. The extent to which these substrates contribute energy for exercise depends on the intensity and duration of exercise the level of exercise training the initial muscle.