Respiratory adaptations · Physiology

Which respiratory adaptation is most important for sustaining prolonged exercise?

  1. Increased resting ventilation at rest
  2. Improved gas exchange efficiency
  3. Reduced lung compliance
  4. Progressively increased airway resistance
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Correct answer: Improved gas exchange efficiency

Efficient gas exchange ensures adequate oxygen delivery during prolonged activity. This adaptation supports endurance performance.

Difficulty: Medium Question 15 of 20

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