What Is The Best Source Of Energy During Exercise

Phosphocreatine as with all out 100 meter sprints exercise under 30 seconds.

What is the best source of energy during exercise.

Fat is the most energy dense nutrient utilized during exercise with one gram providing 9 kcal of energy. High intensity exercise of a short duration requires anaerobic sources of atp. The amount of carbohydrate that can be stored in the body as glycogen depends on diet and the athlete s conditioning level. An alternative energy source to protein being used for energy.

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. Fat is your body s preferred source of energy for low intensity exercise. Muscle carbohydrate stores glycogen blood sugar blood fatty acids and intramuscular triacylglycerols. Nutrients provide the energy sources for all forms of exercise.

While at rest and during low intensity exercise free fatty acids are the predominant energy sources. During exercise there are four major endogenous sources of energy. During physical exercise stored carbohydrate or glycogen is converted into energy to fuel the muscles but this supply is not endless. 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.

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.