- Is there any greate urge to breathe immediately following the period of hyperventilation? Explain- Explain briefly the reason for the change in respiratory rate after running in place for 2 minutes.
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Josee P.
You should be able to hold your breath longer than normal after you hyperventilate (breathe rapidly for a while) because hyperventilating a. decreases blood oxygen levels. b. decreases blood carbon dioxide levels. c. increases blood oxygen levels. d. increases blood carbon dioxide levels.
During an all-out sprint, muscles metabolize glucose anaerobically, producing a high concentration of lactic acid, which lowers the pH of the blood and of the cytosol and contributes to the fatigue sprinters experience well before their fuel reserves are exhausted. The main blood buffer against pH changes is the bicarbonate/CO $_{2}$ system. To improve their performance, would you advise sprinters to hold their breath or to breathe rapidly for a minute immediately before the race? Explain your answer.
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