ISSA Nutritionist Practice Exam

What is the most effective strategy to prevent muscle catabolism during exercise?

1. Consume protein pre-workout

2. Hydrate with water

3. Use branched-chain amino acids

4. Postponed carbohydrate intake

The correct answer is: Use branched-chain amino acids

The consumption of branched-chain amino acids (BCAAs) is recognized as a highly effective strategy for preventing muscle catabolism during exercise. BCAAs, which include leucine, isoleucine, and valine, play a critical role in muscle protein synthesis and can help minimize muscle breakdown during physical activity. When taken before or during exercise, BCAAs can provide a readily available energy source for muscles and stimulate anabolic pathways that help maintain muscle mass. During prolonged and intense exercise, the body can enter a catabolic state, where it starts to break down muscle protein for energy. By supplementing with BCAAs, especially in the context of resistance training or endurance activities, individuals can help preserve their muscle tissue, enhance recovery, and improve overall performance. While protein consumption pre-workout can be beneficial, it may not be as immediate or effective in preventing catabolism during the exercise itself, compared to the direct role BCAAs play. Hydration is crucial for overall health and performance but does not directly influence muscle catabolism. Postponing carbohydrate intake may also be counterproductive, as carbohydrates are vital for fueling exercise and could lead to increased muscle breakdown if glycogen stores are not adequately replenished. Thus, the focus on B