The Aquathon was a physical challenge completed my the Year 11 students of Sacred Heart College on the 14th of March, 2018. The course consisted of a 300m swim (12 lengths of the indoor pool), transitioning into a 4km run around the surrounding streets of Sacred Heart. The aquathlon was such a challenge on the body, as, throughout the course, all three of the energy systems were used to a certain extent. My goal was a achieve an excellence grade which was a time of 25 minutes or less. I fell short of that goal, achieving a merit grade with a time of 26.33. Prior to the aquathlon, we were given 5 weeks training to prepare, which included our short term and long term exercise and practising swimming and running - separate and simultaneous. We trained to get our separate energy systems stronger individually, but during a physical activity such as the aquathlon, they systems overlap, using more than one…show more content… Glycogen is an energy we store in our muscles. Glycolysis refers to the breakdown of sugar that allows us to make energy. This system replenishes the already used ATP from glycogen, the breakdown of carbohydrates which has been consumed. It requires no oxygen but depletes the body’s carbohydrate stores extremely quickly. It is necessary to continually create ATP during exercise, as the body cannot rely on, as the muscles need fuel to continuously contract and expand. A downside of this system is the production of lactic acid which is a byproduct of the energy production. This system plays a major part in providing energy for moderate to high-intensity exercise. This can last from 10 seconds to approximately 3 minutes. Development of this system contributes to high-intensity endurance with medium duration, such as an 800-metre run or a 100-metre butterfly. In terms of the Aquathon, I would have used this system for a large proportion of my 300-metre
