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The bodies response to long term exercise: The Respiratory System

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Jack Lewis

on 17 June 2013

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Transcript of The bodies response to long term exercise: The Respiratory System

By Jack Lewis 13Hm
The bodies response to long term exercise: The Respiratory System
Increased vital capacity
Increase in minute ventilation
Increased strength of respiratory muscles
Increase in oxygen diffusion rate
Vital capacity is the maximum amount of air that can be released from the body once you have inhaled. The lungs increase in size (they expand) which in turn increases your vital capacity. This increases when you exercise on a regular basis because the lungs need more oxygen to supply the muscles with nutrients and the higher the intensity of the activity the more nutrients needed. An increased vital capacity is beneficial for an athlete because the more nutrients and oxygen that can be supplied to the muscles, the longer the athlete is going to be able to work without fatiguing because there is more of a fuel source provided for the working muscles.
Minute ventilation is the amount of oxygen inspired by the body in a minute. When you exercise more oxygen is inspired in a minute. This is because your body gets used to bringing in more oxygen to supply the working muscles. As tidal volume and breathing rate increase the minute ventilation will also increase as more breathes are needed to meet the demand for oxygen. Increased minute ventilation is beneficial for an athlete because the more oxygen and nutrients that can be inspired in a minute, the better the athlete will be able to work aerobically (he/she will have more energy because more nutrients are being brought into the body).
Respiratory muscles include diaphragm and the intercostal muscles. These muscles increase in strength. This allows for greater expansion of the chest cavity. This also improves the ability to breathe in more air over a longer period of time without fatigue. This is a result of long term exercise and increased usage of the respiratory muscles. As the chest cavity expands more efficient inhalation and expiration occurs. This means that more oxygen can be brought in and more carbon dioxide can be expelled from the body. This increased strength of respiratory muscles can be beneficial to an athlete because when doing aerobic activities the individual will be able to bring in more oxygen to provide the working muscles with energy. Also more carbon dioxide is expelled from the body so the athlete wont fatigue as quickly.
Oxygen diffusion is where the oxygen moves from the capillaries to the tissues and carbon dioxide moves from the cells to the blood. Oxygen diffusion rate increases after long term exercise and as a result the oxygen and carbon dioxide will start to diffuse much quicker. When you exercise for a long period of time you're cappilaries will then increase in size and in numbers. This has an impact on the movement of oxygen and carbon dioxide becasue the wider the capillaries means there is more oxygen being diffused from the capillaries to the tissues and this is the same for the carbon dioxide (the wider capillaries means there is more carbon dioxide being diffused from the cells to the blood). This is beneficial to an athlete because the more regular the training the better the transportation of oxygen and carbon dioxide there will be. The more oxygen that can be transported means the athlete has more of an energy source to continue working at a good intensity. The better the transportation of carbon dioxide is also beneficial because this can be removed from the body efficiently which means the athlete will can get rid of this by product and be less prone to fatigue.
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