Training Dictionary
ATP, Adenosine Triphosphate
Definition: ATP is used as currency for muscle contractions. It is important because it allows energy sources to be broken down in small steps to give continuously sustained energy.1
Adenosine Triphosphate is a molecule with three high energy phoshpate groups. To release energy, the bonds of the ATP molecule can be broken down into ADP (two phosphate groups) and a molecule of inorganic phosphate1
ATP is created through various cycles through the breakdown of many fuel sources.
Simplified Biochemical Reaction:
One example of ATP formation, from the breakdown of glucose by glycolysis:
Glucose + NAD+ + Pi + ADP → pyruvate + NADH + ATP 2
Effects of Exercise
With training, you will be able to store more easy to access fuel supplies that can be utilized at a higher rate. This ultimately means that you will be able to ride faster and with more ease.
With training, It is also possible to increase the rate at which glycolysis takes place. This will allow energy to burn quicker, resulting in an increase of power output.4
Important Details
ATP is used as currency for muscle contractions.
Sources:
1 Campbell, N. A., Reece, J. B., L. G. Mitchell 1999. Biology. 5th Edition. Addison Wesley Longman, Glenview, IL: 89 p.
2 Nelson D. L., M. M. Cox 2005. Principles of Biochemistry. 4th Edition. W. H. Freeman & Company, New York: 522-525 pp.
