Aerobic System

In todays lesson we learnt about the Aerobic system and the 3 different stages of it.

Stage 1
Stage 1 is called Aerobic Glycosis. Oxygen is used for this system and unlike other energy systems, this cycle is limitless. In this stage 2 molecules of ATP is reproduced. The glucose is broken down in to lactic acid and produces 2 molecules of ATP. In excercises such as sprinting the Aerobic Glycosis system can be used.

Stage 2
Stage 2 is called the Creb cycle. In the Creb cycle lactic acid from stage 1 combines together with other acids and the reaction that occurs is called the Creb cycle. 3 extra things are produced at this stage, more ATP, Carbon Dioxide and Hydrogen. During this stage 2 molecules of ATP is produced. Then the hydrogen goes to stage 3.

Stage 3
Stage 3 is called the Electron Transport Cycle. Hydrogen from stage 2 is used in this stage. At this point Hydrogen is charged positively or negatively. 1 molecule of hydrogen is made and 2 molecules of  oxygen is made, and when they combine it gives us H20 (oxygen.) During this stage 34 molecules of ATP is produced.

As a total, 38 molecules of ATP are produced through out the whole cycle. Excercises such as swimming, football, cricket, sprinting etc consists of the aerobic system.

Analaysis of systems

Through out any type of excercise (long/short term) all 3 of your systems works. Your cardiovascular system, respiratory system and musculo-skeletal system.

When you first start to excercise the short term affects are your breathing to become slightly faster and your heart rate to become slightly faster, but your muscles don't heat up because you're not excercising enough for the friciton to work in between your joints and muscles.
Your heart beats slightly faster because your body is putting in that little bit of extra force to do excercise. So your heart has to try and keep up with speed. This is benificial because when your heart is beating faster more blood is pumping around your body, this enables you to keep up with yourself and your excercise.
You breath slightly faster because your lungs are taking in more oxygen and your diaghpram and inter-costal expand more. The more they expand the more amount of air a person will be able to breath in. Breathing helps the muscles work for longer because oxygen travels too the musles while you excercise.

The long term affects of your breathing is that when you breath, your inter-costal muscles and diaphragm expand. When you excercise they expand much more because your taking in bigger breaths. The reason your taking in bigger breaths is because your heart is moving at a faster rate because of the amount of excercise you do, so your whole body has to keep up with that.
Long term affects of your heart rate also increases our heart size and also increases its strength when you excercise it. The stroke volume of the heart gets higher as well because it's much stronger than before, which will give you less chance of suffering from a heart attack or stroke.
The more you excercise the stronger your bones become including all the layers of your bone; bone marrow, compact bone, cancellous (spongy) bone and the bone marrow. When your bones get stronger it prevents from injuring your self badly if you were in an accident.

ATPPC System/Anearobic System

In my previous lesson we learnt about the ATPPC system. It is an energy system inside of your body. ATPPC is broke in to two pieces inside the body; PPP & PC. PPP breaks in to 1 P and releases energy. PC is made up of Creatine & Phosphate. PC then breaks in to 1 P aswell. Both P's join together and forms extra energy. Then when it is pushed to its limit it breaks, and that break releases a bit more energy too. Some of the energy released in the break goes to the muscles, but the energy left over is used to restart the whole ATPPC cycle again. The whole cycle lasts 10 seconds. Once the ATPPC system has ran out, the body uses a different system, it switches over to the lactic acid system.. The lactic acid system consists of Glucose (sugar.) Glycolysis is stored inside the muscles and is used once the ATPPC system has ran out. The lactic acid system helps you last in excercise for ruffly 40-60 seconds. After that, lactic acid builds up in your muscles and makes them hurt. That is why when you usually excercise, after a minute or so your body begins to hurt, but its lactic acid building up inside of your muscles. You need lots of oxygen to help break up the lactic acid so it'll go away and stop hurting.

We investigated it by going to the gym and doing various excercises. We did push ups, pull ups, running for 12 minutes, lifting weights and pushing weights. This helped us know which system we was using at the time of excercise. For example, if we lasted more than 10 seconds on one excercise, then we know that our ATPPC system wasn't being used.