After fast running man has fast heart beat slow pulse and shallow breathing

After fast running, man has fast heart beat, slow pulse and shallow breathing, in such condition he has

Options

(a) Oxygen debt
(b) Poisoning due to lactic acid
(c) No pulmonary pressure
(d) Weak heart

Correct Answer:

Oxygen debt

Explanation:

Rate of O₂ supply by lungs into muscles falls down during active work or in exercise. Muscles accumulate lactic acid and slowly breathing becomes hard so as to increase O₂ intake in lungs. This stage is called oxygen debt.

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