Which component is NOT typically included in skill-related fitness?

Skill-related fitness refers to components of fitness that enhance an individual's performance in athletic or sporting activities. These components typically include balance, coordination, agility, power, reaction time, and speed. Each of these skills contributes to the overall ability to perform specific tasks in sports and other physical activities.

Muscle mass, on the other hand, is associated with health-related fitness, which focuses on components such as cardiovascular endurance, muscular strength, muscular endurance, flexibility, and body composition. While muscle mass can play a role in overall physical performance, it does not directly enhance skill-related fitness in the same way that balance, coordination, and speed do.

Thus, the correct answer identifies muscle mass as the component that does not fit within the framework of skill-related fitness, distinguishing it from those components that are essential for athletic performance.