What amino acid is considered conditionally indispensable in long-distance runners?

Question

Quizplus · Accepted Answer

Glutamine is considered conditionally indispensable in long-distance runners as it is a major fuel source for immune cells and can become depleted during intense exercise, leading to immune suppression and increased risk of infection. Additionally, glutamine also plays a role in muscle protein synthesis and may help with muscle recovery after exercise.

What Amino Acid Is Considered Conditionally Indispensable in Long-Distance Runners