Which is a short-term respiratory effect of exercise?

Which is a short-term respiratory effect of exercise?

• A. Sweating
• B. Increased lung capacity
• C. VO2 max increases
• D. Increased diaphragm strength

Answer: (A)

During a single bout of exercise, the body immediately increases ventilation to meet the higher demand for oxygen and to remove more carbon dioxide. This means breathing rate and depth rise quickly. Sweating is a temperature-regulation response, not a respiratory one. Increases in lung capacity and diaphragm strength, as well as VO2 max improvements, are long-term adaptations that develop with sustained training over weeks to months, not in the short term. So the key idea is that the quick, short-term respiratory change is the rise in ventilation during exercise, while the other options reflect longer-term changes or non-respiratory effects.

During a single bout of exercise, the body immediately increases ventilation to meet the higher demand for oxygen and to remove more carbon dioxide. This means breathing rate and depth rise quickly. Sweating is a temperature-regulation response, not a respiratory one. Increases in lung capacity and diaphragm strength, as well as VO2 max improvements, are long-term adaptations that develop with sustained training over weeks to months, not in the short term. So the key idea is that the quick, short-term respiratory change is the rise in ventilation during exercise, while the other options reflect longer-term changes or non-respiratory effects.