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You will have observed that many athlete...

You will have observed that many athletes appear to be rather 'out of breath' on completion of their events. This is true for non-athletes after a short bout of exercise - running for a bus, for example. At the end of a normal inhalation, the breath can be held from between 30 to 50 seconds. The breath-holding time immediately after exercise is shorter. The least likely cause of this would be

A

an increase in the `CO_2` concentration in the blood

B

a decrease in pH of the blood

C

an increase in the lactic acid concentration of the blood

D

stimulation of the breathing centre in the medulla

Text Solution

Verified by Experts

The correct Answer is:
D
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