There are three ways in which our bodies generate energy to activate muscle movement. They are the Alactic Anaerobic (Phosphagen), Lactic Anaerobic (Lactic Acid), and the Aerobic Systems. The energy systems to be engaged in generating power depends upon the how hard and how long the muscles are being worked. Prior to any discussion of Energy Systems, a basic understanding of ATP, ADP, Lactic Acid and Creatine Phosphate is required. Related Post: best free standing punching bags for apartments A Definition of ATP — Adenosine Triphosphate A chemical process within body cells called “cellular respiration” converts the food we consume into Adenosine Triphospahte , commonly called “ATP”. The ATP molecule is comprised of comprised of oneAdenosine and three Phosphate units. When the ATP molecule is activated, the third phosphate unit separates releasing the energy required to stimulate muscle movement.
A Definition of ADP — Adenosine Diphosphate The broken molecule is called Adenosine Diphosphate or ADP. ADP may be reconverted to ATP again if the missing Phosphate segment is replaced. Creatine Phosphate Defined Like ATP, Creatine Phosphate (PCr) is stored in muscles, but is not in itself an energy source; however, the Phosphate unit when broken off from Creatine can bind with ADP to produce ATP, which will again generate energy. Lactic Acid defined Lactic Acid is a chemical compound produced when the ATP stored in muscles is used up and new ATP is generated directly from cellular respiration and not from Creatine Phosphate. The lactate is not a waste product as it goes through a separate chemical precess producing more ATP. Alactic Anaerobic System also called ATP-PCr or ATP-CP or Phosphagen System
Lactic Anaerobic Energy System or Lactic Acid System
In order to describe the functions of each system, the process, here, has been simplified. In reality one of the systems will be the primary source of energy, but the others will function simultaneously. Athletes in training will attempt to extend the effectiveness of the Anaerobic systems in coordination with the Aerobic. This harmony allows the body to remove and recycle lactic acid as quickly as it is generated, maintaining endurance while maximizing power. The balance point is referred to as "Anaerobic Threshold".
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