During moderate exercise,a body gets most of its energy from?

Answer 1

the body is always utilizing substrates from amino acids, glucose and fatty acids for energy, however the primary energy source is either free fatty acids or glucose. they are both converted to ATP, the cellular energy source responsible for all muscular contractions.

the intensity at which the body is operating at determines which one becomes the primary energy source. when the level of activity is low or at rest free fatty acids are the primary energy source, rest being the equivalent to walking, sleeping, computing/office work and resistance training with light weights. here the body can metabolize a sufficient amount of free fatty acids to keep up with the energy demands of skeletal muscle. when energy demands get too high the body will switch to using glucose as the primary source of energy. swimming, running, heavy weight training, etc. are all forms of high itensity exercise.

* one thing that most people do not realize is the effect that exercise has on the metabolic rate in the hours after exercise. when exercise is performed at a low level of intensity free fatty acids are the primary energy source used during exercise and after exercise the body switches to using a greater amount of glucose. when you exercise at a high level of intensity, the primary energy source is glucose during exercise and after switches to free fatty acids. it's kind of a no-brainer as to which method is optimum for fat loss.

Answer 2

Energy released by splitting of ATP (adenosine triphosphate) into ADP (adenosine diphosphate) and splitting creatine phosphate.

Answer 3

Aerobic respiration

Answer 4

stored carbohydrates and fat with some muscle