With every physical activity, in everything we do, such as breathing, walking, cycling or thinking requires energy. The energy comes from burning primarily carbohydrates and fats.Proteins can if necessary also serve as an energy source, but are less suitable. Combustion of the proteins is in fact less effective than the burning of carbohydrates and fats.
Energy During Physical Exertion
During your training, proteins, fats and carbohydrates from food are absorbed into the blood.
- Proteins are degraded to amino acids and play a role in the production and replacement of cells.
- Fat is broken down into triglycerides and stored in fat deposits.
- Carbohydrates are broken down into glucose, and part of it is stored in the liver and muscles as glycogen.
Energy Generate Ande processes
All metabolic processes in the body which leads to the release of ATP. ATP is the substance that gives energy. In fact, the only “fuel” as muscle work can be performed. Every muscle can save a small amount of ATP. During physical exertion first used this stock. At the maximum effort that goes out after about 10 seconds. Meanwhile, fill the body back up to the amount of ATP, so that the muscle can re-fuel. This is done in two ways:
- Anaerobic: this is the combustion without the use of oxygen. This glucose or glycogen is broken down into lactic acid and ATP. This process creates lactic acid, because there is not enough oxygen available. Anaerobic combustion supplies energy only for about 2-3 minutes.
- Aerobic: This is combustion with oxygen. Here, carbohydrates, fatty acids or proteins are broken down to carbon dioxide, water and ATP.
With long-standing, moderately strenuous exercise, for example. The fact that a course of about 1-2 hours to be mostly carbohydrates aerobically down. For long-term measures are also utilized by the burning of fatty acids. The breakdown of proteins for energy is quantitatively small and occurs mainly as other forms of energy supply will be exhausted.
The anaerobic and aerobic energy is always next to each other instead. It is thus not “one way or the other”. For the short term, intense exercise oxygen a limiting factor. Therefore falls short intense efforts focus on anaerobic combustion. This means that the limited glycogen is broken down in the liver and muscles.
Aerobic combustion occurs primarily through prolonged moderately strenuous exercise. At a lower load does not get you as soon as shortness of breath, because sufficient oxygen is available. In addition, the fuel control geared to also burn fat. Thus, glycogen is spared and can sustain the effort for longer.
Preference For Supplying Energy From Carbohydrates
For a competitive athlete is to maximize glycogen very important because the energy supply of carbohydrates is more effective than fat. The burning of fat takes more oxygen and produces comparatively less ATP. As a trained cyclist, you can increase glycogen stores through training and high carbohydrate intake and thereby extend the performance.
Exercise And Lose Weight
Scientific studies have shown that healthy exercise is crucial to losing weight permanently. But why dieting is not enough alone? And what is the most appropriate sport to lose weight: endurance or strength training. And why?