Energy systems response to acute exeraise
The Musculoskeletal system consists of muscles, tendons, ligaments, bones and cartilage. It helps your body to move and it forms the fleshy part of your body. When you start moving your musculoskeletal system gets loser and this helps to provide you with more movement. This is because movement of joints produces more synovial fluid which becomes thinner and by doing this it allows a greater range of movement. There is an increased blood supply and the pilability and range of movement also increases.
Exercise causes a bigger demand for oxygen. To help with this there is an increase of blood flow to the muscles. When exercising there are little muscle tears which could cause swelling. To let the body repair the tears, rest is needed before exercising again.
All movement requires energy. There are 3 diffrent types of energy systems, they are lactic acid system, aerobic system and ATP-PC system. ATP-PC system is for short tasks which are within 10seconds for example in a 100m run. Lactic acid system is within 2mins and the aerobic system is for long tasks that take over 3mins.
Phosphocreatine is an energy rich compound in the sarcoplasm of the muscles. It's rapid availability is important for providing energy for contractions of high power, such as in the 100m or a tennis serve. However there is only enough PC to last up to 10 seconds and it can only be replenished when the intensity of the activity is submaximal with oxygen.
Lactic acid system
It's an anaerobic system where the processes take place in the sarcoplasm. The energy needs to come from the food you eat. The glucose is broken down into two molecules of pyruvic acid and provides energy. The lactic acid and pudes energy system provides energy for high-intensity activities lasting up to 3 minutes, but peaking at 1 minute.`
The three significant events occuring in the aerobic system are oxidation of citric acid, production of carbon dioxide and resynthesis of ATP. The aerobic breakdown of glycogen, fat and protein can also be metabolised under aerobic conditions to form carbon dioxide and water and energy for ATP resynthesis. This energy system can provide 38ATP