Oxygen intake

Oxygen uptake serves to supply the blood with oxygen. Lung breathing also involves exhaling carbon dioxide, a waste product of energy metabolism.

Oxygen uptake depends on the intensity of exertion; during sporting activities, the pulse rate rises sharply in addition to the respiratory rate.

The coordinated interaction of the ability of oxygen uptake with the cardiovascular system is a limiting criterion for endurance performance. The maximum oxygen uptake (VO2-Max) records this value and provides information about the aerobic endurance of an athlete (cf. Zintl 1997).

With an increase in load intensity, there is a continuous increase in respiratory rate and respiratory minute volume. Under resting conditions, this is about eight liters; under maximum load, this value can exceed 100 liters.

In the normal state (without load), everyone is in an oxygen steady state, but through high-intensity exercise, the body may need more oxygen than it can maximally absorb, and thus slips into an oxygen debt.

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