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Hypertrophy of the muscles is when the muscles get bigger and stronger.
Hypertrophy of the heart is when the left ventricle of the heart gets bigger and stronger. This also impacts stroke volume, allowing more oxygenated blood to pump through your body.

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Lasts for around 2 minuets
Provides most energy for all out activities
Med-High intensity
Produces lactic acid in the muscles
Lactic acid slows energy production, causes fatigue and muscular pain
Uses glycogen
E.G 800 meter run

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Lasts for 10-12 seconds.

Very high intensity
Uses Phosphate Creatine [PC] stored in the muscles
E.G 100 meter sprints

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When taking part it the aquathon over a long period of time, hypertrophy of the muscles takes place making them bigger and stronger. This helps you by allowing you to longer lasting endurance and performance rate will increase because you are fitter.

As you get fitter hypertrophy of the heart also happens, the stroke volume of the left ventricle is increased allowing more blood to get pumped around with less beats because the muscle is fitter and stronger, during the Aquathon we should be breathing constantly, if our stoke is increased we will be able to breathe with more efficiency with deeper breathes uses the oxygen better. This also comes with decreased resting heart rate meaning you can last longer in the running and swimming part of the Aquathon without getting tired as easily.

When we do the Aquathon we produce lactic acid in our muscles, with an increased stroke volume we are able to get rid of this lactic acid more efficiently because oxygen from oxygenated blood is what gets rid of the lactic acid and if we have an increased SV the oxygenated blood can get to the muscles faster

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Lasts forever. You are always using it.
Uses oxygen

Lasts for extremely long time

Not very powerful – only fuels low intensity exercises

Example: 5km run

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Aerobic System | Energy Systems 04 | Anatomy & Physiology

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We use this when we dive into the pool which lasts for 10 secs at a high intensity. The phosphate creatine is stored in the muscle ready to be used.

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Increased aerobic capacity is when the body allows aerobic exercises to last for longer, this is because you can rely on oxygen for longer without having to default to the lactic acid or atp.pc system
Increased anaerobic threshold occurs when the body has glycogen or phosphate creatine (depending on energy system) resynthesises the phosphate.

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deeper breaths , more breaths ,
so that oxygen can get to the working muscles and pump the blood around the body from the heart. Blood also carries CO2 and waste back to the lungs to be breathed out.

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~ Sweating
Muscle contractions cause heat to be produced.  Intense and prolonged exercise produces considerable amounts of heat.  During exercise the body redistributes blood to the skin to allow the heat to escape.  Sweat production aids heat loss through evaporation.

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so the oxygen can get to the muscles and pumps the blood around the body

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We use this as a pace setter when we start the run at a medium to high intensity, and when we increase our intensity to run down England Street. The aerobic system cannot keep up with energy production, so the lactic acid system helps to produce the energy required to meet the demands of the working muscles.

Provides most energy for all out activities

Med – High intensity

Used in activities lasting between 10 – 120 seconds

Produces lactic acid in the muscles

Lactic acid slows energy production, causes fatigue, and muscular pain

Uses glycogen

Example: increasing intensity up England Street.

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when doing short term exercise , the muscles produce lactic acid , during high intensity activity . Response to short exercise is an increase is breathing , sweating , temperature controls and redness . Working muscles create heat . In order to create homeostasis , sweating occurs . Allowing the body to cool down . The muscle require oxygen for them to do exercise. Creating energy by resynthesising

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Uses oxygen

Lasts for extremely long time

Not very powerful – only fuels low intensity exercises

Example: When we are running the 3 km down Ferry Road and doing 6 out of 8 Laps at a low intensity. The reason we use our aerobic system is because our anaerobic systems do not last very long and oxygen is right there ready for our heart to pump to the working muscles.

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*Heart*
Over time if you continued training for aquathon for 6 months your heart muscles would get stronger and larger by hypertrophy. As you use your heart muscles pumping oxygenated blood to the muscles the muscles in the heart get stronger and your stroke rate will increase. Your stroke rate is the amount of blood the heart pumps per pump so over time as the heart muscles grow stronger the stroke rate will increase which causes you to have a lower resting heart rate. This helps you in aquathon because it pumps more oxygenated blood to the muscles.

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*Lungs*
If you continued to train for aquathlon for six more months you lungs would get bigger and stronger as you grow more alveoli which means you have a larger oxygen intake. This helps you to be able to run for longer without getting as puffed because you are able to take deeper breaths and get more oxygen into your body, which you need to oxygenate your blood which travels to the working muscles. You are able to take deeper breaths as your intercostal muscles get stronger decreasing your breathing rate helping to run and swim for longer without getting as puffed meaning you are ablrto run further distances and increase your pace.

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Increase in stroke volume is because your heart is getting stronger and pumps more blood through the body with every heartbeat. Once the intensity of the exercise exceeds 50-60% of an individual’s maximum heart rate their stroke volume ceases to rise.

Cardiac output during exercise increases greatly owing to the relatively high heart rates that are achieved during exercise

increase in blood pressure because your heart is getting stronger and pumps more blood through the body with every heartbeat

lowers resting heart rate because regular exercise training strengthens your heart so each beat delivers a bigger burst of blood, and fewer beats are needed.

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The respiratory system. When you exhale, you expel carbon dioxide, a waste product of respiration. During exercise, your lungs and respiratory system must provide more oxygen to the blood. Increased breathing because heart rate increases and you need an increased need of oxygen because it is required for your body to release energy increase in strength. ... This is a result of long term exercise and increased usage of the respiratory muscles.

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The respiratory system. When you exhale, you expel carbon dioxide, a waste product of respiration. During exercise, your lungs and respiratory system must provide more oxygen to the blood. Increased breathing because heart rate increases and you need an increased need of oxygen because it is required for your body to release energy increase in strength. ... This is a result of long term exercise and increased usage of the respiratory muscles.