Which of the following is a correct statement about protein intake and changes to muscle tissue?

• A. Increased protein intake directly leads to an increase in muscle tissue without exercise.
• B. Adequate protein intake is necessary for muscle repair and growth after exercise.
• C. Protein intake has no effect on muscle tissue changes.
• D. Excessive protein intake always results in increased muscle mass.

Answer: (B)

Verified step by step guidance

1. Understand that muscle tissue growth and repair are complex processes that involve both protein intake and physical activity, particularly resistance training.
2. Recognize that adequate protein intake provides the necessary amino acids that serve as building blocks for muscle repair and growth after exercise.
3. Acknowledge that increased protein intake alone, without exercise, does not directly lead to an increase in muscle tissue. Exercise is a critical stimulus for muscle growth.
4. Consider that while protein is essential, excessive protein intake does not automatically result in increased muscle mass. The body has a limit to how much protein it can use for muscle synthesis.
5. Conclude that the correct statement is: Adequate protein intake is necessary for muscle repair and growth after exercise, highlighting the importance of both nutrition and physical activity in muscle development.