Final answer:
Athletes with considerable muscle hypertrophy are likely to have a higher fat-free body density compared to the general population, due to the increase in myofibrils and connective tissue within the muscle.
Step-by-step explanation:
True. Athletes who have a significant amount of muscle hypertrophy are likely to exhibit a greater density of the fat-free body (FFBd) versus the typical population-specific value. Muscle hypertrophy, seen frequently in bodybuilders and strength-trained athletes, involves an increase in the number of sarcomeres and myofibrils within a skeletal muscle, leading to increased muscle mass.
This hypertrophy primarily occurs in the fast glycolytic (FG) fibers, which contribute to the dense musculature that characterizes these athletes. With the increase in muscle mass and the enhancement of connective tissue strength, it is plausible that the density of the fat-free body mass would be greater than that of the general population, whose physiques may not undergo such rigorous muscle-building processes.