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Concepts of Energy

There are three types of energy; these include kinetic, chemical and potential.

Kinetic Energy Energy in the form of muscular contraction/ joint
Chemical Energy Energy stored within the bonds of chemical compounds

Potential Energy `Stored' energy which is ready to be used when required.


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This energy system requires two reaction the bond breaking between PC
(phospho-creatine), this breaking of the bond creates energy, this energy is
used to resynthesis ADP + Pi to ATP. This is a coupled reaction because the
product of one reaction is used in another reaction.

Phospho-creatine is a high…

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glycogen into glucose. This is further broken down in a series of reactions
called glycolysis. During glycolysis the enzyme phosphofructokinase initiates
the partial break down of glucose into pyruvic acid. 2 ATP is made at this
stage. Because there is no O2 then the pyruvic acid gets converted into lactic…

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Stage two is the Krebs cycle, occurs in the matrix of the mitochondria. It
creates 2 ATP. Four main events take place once the Acetyl CoA from stage 1
combines with Oxaloacetic acid, to form citric acid. These are

1. Co2 is produced and removed via respiration
2. Hydrogen atoms…

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Effiecient ATP resynthesis More complex series of
when good O2 supply is reactions
given. Cannot resynthesis ATP at the
Large ATP resynthesis : 38 in start of exercise due to an
total initial delay of O2
Provides energy for Limited energy of ATP for
Low/moderate-intensity, to high intensity exercise.


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