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  3. Loughborough University (LU)
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  7. Exercise Physiology (18PSB211)

Lecture notes

Exercise Physiology Revision Notes
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Clear and easy to understand semester 2 lecture notes. Includes diagrams, charts, tables and step by step explanations in order to give you an in depth understanding of the following topics. - Anaerobic Energy Provision - Principles of Exercise Training - Exercise in the Heat - Exercise in the Co...

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  • April 27, 2020
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  • 2019/2020
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Lecture 2 – Anaerobic Energy Provision

ATP

ATP is made up from an adenosine (adenine + ribose)
and three inorganic phosphates that are bound
together by high energy bonds.

* Inorganic = not containing carbon *




ATP is broken down by the enzyme ATPase to create ADP + P + energy that you can use for
anything in the body.

1 mol of ATP will produce 30.5kg

1 mol of ADP can be broken down into
adenosine mono phosphate +
phosphate to produce 30.5 kJ.

And there are other ways of energy
can be released by the high energy
bonds 

ATP – Energy for Muscle Cells

The ATP that produces the energy for muscular contraction is myofibrillar ATPase. ATP is
broken down at the myosin head and ADP + P remains bound to myosin.

Bioenergetics: Basic Energy Systems

ATP storage in the body is very limited – it would only last for about 2 seconds of maximal
contractions. Therefore the body must constantly synthesise new ATP.

Power: rate at which ATP can be produced
Capacity: how much ATP can be produced?

If you do not have ATP this will lead to rigor mortis (stiffening of the joints and muscles of a
body a few hours after death) because ATP is needed to relax the myosin head.

There are three different ATP synthesis pathways:
 ATP-PCr system
 Glycolytic system
 Oxidative system

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