Physiology And Injuries In Sports — Physical Education STD 12 Commerce — Question
CBSE BoardEnglish MediumSTD 12 CommercePhysical EducationPhysiology And Injuries In Sports5 Marks
Question
What do you mean by oxygen intake and oxygen uptake?
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Answer
Oxygen Intake: It is the amount of oxygen which can be taken by the lungs from atmosphere. If this amount is more then it is better for achieving higher $VO_2$ max. The oxygen intake depends on the vital capacity which further depends on the lung size, number of active alveoli, strength of the respiratory muscles, size of the chest cavity, etc. Oxygen intake is not a limiting factor for endurance performance in a healthy sportsperson.
Oxygen Uptake: The amount of oxygen which can be absorbed and consumed by the working muscles from the blood is called oxygen uptake. The oxygen uptake depends on the rate of diffusion which is further determined by the speed of blood flow, temperature and partial pressure of oxygen in the blood and of carbon dioxide in the muscle cell. The speed and amount of oxygen consumption also depends on the number, size and metabolic capacity of the mitochondria and fortunately these can be improved to a certain extent through training.
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