Stored at the myosin cross-bridges is broken down to release energy for contraction it is used for short bursts of energy – it is exhausted after about 10 seconds.
             Carbohydrate is broken down anareobically (without oxygen) to lactic acid. This causes muscular fatigue. The energy released during this breakdown is used to re-synthesize A.T.P. Exercise performed at maximum rates for between one and three minutes depending heavily upon the lactic acid system for A.T.P energy.
             Firstly uses glucose from either muscle tissue or from the liver and secondly breaks down fatty acids. The main fuel is glucose.
             The Energy for muscle contraction which comes from the breakdown of a chemical compound named adenosine triphosphate (ATP)
             Sources of ATP: Protein, Carbohydrates and Fats
             How is A.T.P produced in each energy system?
             ADP and the phosphate are converted back to A.T.P by the creatine phosphate (CP) when A.T.P is depleted.
             Carbohydrate is broken down anareobically (without oxygen) to lactic acid.
             The energy released during this breakdown is used to re-synthesize A.T.P.
             What is the fuel source for each of the energy systems?
             Oxygen System – Glucose, triglycerides
             How are each of these fuels replenished?
             What is the fuel stored for each energy system?
             ATP-CP System – myosin cross-bridges
             What is the time frame in which each energy operates?
             ATP-CP System – Up to 10 Seconds, Short-duration activites
             Lactic Acid System – 1 – 3 Minutes
             Oxygen System – Long-duration activities
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