Energy
Firstly, what is energy? Energy can be defined as the capacity or ability to do work, such as to move an object (of a given mass) by the application of force. (Amezdroz G, Dickens S, Hostford G, Stewart T, Davis D, 2012) Energy can exist in a variety of forms, such as electrical, mechanical, chemical, thermal, or nuclear, and can be transformed from one form to another. For the purposes of human movement it is mainly concerned with the transfer of chemical energy into mechanical energy. In this process, the breaking of chemical bonds in molecules releases energy for use by the body. The body does not directly use the energy that is released in the breakdown of carbohydrates, fats and proteins. (California Energy Commission, 2012)
For each of the energy system, there are differentiates in the way they produce chemical energy (ATP) from different sources and at different speeds. The adenosine triphosphate-phosphocreatine (ATP-PC) system and the lactic acid system (anaerobic glycolytic system) are both anaerobic systems, meaning that oxygen is not used by these systems to synthesise ATP. These systems are quicker at producing energy, however the duration and energy being used doesn’t last very long. (PT Direct, 2010-2015)
The aerobic system on the other hand relies heavily on oxygen to synthesise ATP, because the chemical processes that use oxygen to produce energy are more complex than the anaerobic processes. The aerobic system is slower at making energy, but it can keep making energy for a very long time without fatiguing. (PT Direct, 2010-2015)
Firstly, what is energy? Energy can be defined as the capacity or ability to do work, such as to move an object (of a given mass) by the application of force. (Amezdroz G, Dickens S, Hostford G, Stewart T, Davis D, 2012) Energy can exist in a variety of forms, such as electrical, mechanical, chemical, thermal, or nuclear, and can be transformed from one form to another. For the purposes of human movement it is mainly concerned with the transfer of chemical energy into mechanical energy. In this process, the breaking of chemical bonds in molecules releases energy for use by the body. The body does not directly use the energy that is released in the breakdown of carbohydrates, fats and proteins. (California Energy Commission, 2012)
For each of the energy system, there are differentiates in the way they produce chemical energy (ATP) from different sources and at different speeds. The adenosine triphosphate-phosphocreatine (ATP-PC) system and the lactic acid system (anaerobic glycolytic system) are both anaerobic systems, meaning that oxygen is not used by these systems to synthesise ATP. These systems are quicker at producing energy, however the duration and energy being used doesn’t last very long. (PT Direct, 2010-2015)
The aerobic system on the other hand relies heavily on oxygen to synthesise ATP, because the chemical processes that use oxygen to produce energy are more complex than the anaerobic processes. The aerobic system is slower at making energy, but it can keep making energy for a very long time without fatiguing. (PT Direct, 2010-2015)