Lung Parameters and VO2max
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REPORT
LUNG PARAMETERS & MAX VO2
Introduction
The respiratory system is made up of the upper respiratory system that consists of the mouth, nasal cavity, pharynx, larynx and the lower respiratory system that consists of the trachea, bronchi and the lungs.
When exercising the rate of respiration in the body increases. This is because when exercising the muscles in the body that are being used need more oxygen.
The oxygen for the muscles, are provided for by the cardiovascular system and the respiratory system. As the muscles need more oxygen the cardiovascular system increases blood flow to pump more oxygen around the body to where it is needed.
At rest in the lungs for example the tidal volume is 0.5L/min and the respiratory frequency is roughly 15 17 breaths/min, but during exercise the tidal volume increases up to about 2l/min and the respiratory frequency can increase to about 60 breaths/min.
At rest in the cardiovascular system for example the heart rate is about 60 70 beats/min and the stroke volume is about 70 80ml/beat, but during exercise the heart rate can increase up to 200 beats/min and the stroke volume to 150ml/beat. Theses two combined increase the cardiac output from 5lmin to nearly 30 L/min.
Wilmore J H, (1999), states that, "VO2 max is the maximal capacity for oxygen by the body during maximal exertion...