What best explains the increased dietary protein needs for a training athlete?

The increased dietary protein needs for a training athlete can be best explained by the increased need for tissue repair. During training and intense physical activity, muscle fibers experience micro-tears that need to be repaired for recovery and growth. This repair process relies heavily on protein, as it provides the essential amino acids necessary for rebuilding muscle tissue and promoting muscle synthesis.

Athletes are often engaged in rigorous training that not only breaks down muscle but also places stress on other tissues, requiring a greater intake of protein to facilitate recovery. This heightened demand for protein helps in restoring muscle integrity and function, leading to improvements in strength, endurance, and overall performance. Consequently, ensuring adequate protein intake becomes critical for training athletes to support their recovery needs effectively.