Energy Systems
There are three energy systems that are used in the human body. The ATP-CP or adenosine triphosphate - creatine phosphate (maximum intensity, short duration), Anaerobic Glycolysis (moderate intensity/short duration), and Aerobic Energy System (low inte]\\\\\\\\\\\\\\\nsity/long duration). These energy systems relate to three types of cars. The ATP-CP system is similar to a formula one car. It can go at very high intensity but for short amounts of time. Anaerobic glycolysis is like a V8 supercar. It can go at a moderate intensity, less than the formula one but can last for longer than the formula one. Finally there's the family car. Reliable, but goes at a much lower intensity than the two race cars. It however can last indefinitely and survive for long periods of time.
All actvities require contribution from at least two of the three energy systems at any given time. This is refered to as interplay. However only one one system will be predominant. The energy systems contribute different amounts at different times. This is dependent on the intensity, duration and type of exercsie or actvity.
Adenosine Tri Phosphate or
ATP is our bodies energy currency. ATP is constantly
required for muscle contraction. The estimate of daily energy needed per day is
100-180 moles of ATP. (Approximately 50-75kg!). At any given time our bodies
only store 0.1 mole of ATP. This means that our stores of ATP have to be
continually replenished. If it wasn't replenished during activity, muscle
contraction couldn't occur.
ATP is our bodies energy currency. ATP is constantly
required for muscle contraction. The estimate of daily energy needed per day is
100-180 moles of ATP. (Approximately 50-75kg!). At any given time our bodies
only store 0.1 mole of ATP. This means that our stores of ATP have to be
continually replenished. If it wasn't replenished during activity, muscle
contraction couldn't occur.