August Krogh’s Nobel-Winning Discovery of Capillary Regulation in Muscle Oxygenation

Danish physiologist August Krogh was awarded the 1920 Nobel Prize in Physiology or Medicine for discovering the capillary motor regulating mechanism.

Krogh's research demonstrated how changes in capillary circulation regulate blood flow to meet tissue oxygen demands during exercise.

His foundational work on microcirculation and tissue oxygenation remains relevant to cardiovascular disease, wound healing, and diabetes.