Certified Dietary Manager (CDM) Practice Exam

Which substance is known to support muscle repair and development?

1. Carbohydrates

2. Vitamins

3. Amino acids

4. Fiber

The correct answer is: Amino acids

Amino acids are the building blocks of proteins and play a crucial role in muscle repair and development. When muscles are stressed during exercise or physical activity, small tears occur in the muscle fibers. Amino acids help to regenerate these fibers and promote recovery by aiding in the synthesis of new proteins. This is particularly important for athletes or individuals engaging in regular physical training, as adequate intake of amino acids can lead to improved muscle strength and growth. In contrast, while carbohydrates are essential for providing energy, they do not directly contribute to muscle repair. Vitamins are important for overall health and can support metabolic processes, but they do not serve the specific purpose of muscle development. Fiber, although vital for digestive health, does not have a direct role in muscle repair or development either. Therefore, amino acids are specifically recognized for their essential role in facilitating muscle recovery and growth.