Which of the following components is NOT part of health-related fitness?

The correct answer is speed, as it is not considered a component of health-related fitness. Health-related fitness primarily focuses on attributes that enhance an individual's ability to perform daily activities and contribute to overall health. The key components of health-related fitness include cardiovascular endurance, flexibility, muscular strength, and muscular endurance, as these directly influence physiological well-being and functional capability.

Cardiovascular endurance refers to the efficiency of the heart and lungs in supplying oxygen to the body during prolonged physical activity. Flexibility involves the range of motion available at a joint, which is crucial for overall functional movement and injury prevention. Muscular strength is the maximum amount of force that a muscle can exert in a single effort, contributing to overall physical capacity and metabolic health.

Speed, while important in various athletic contexts, is classified more as a skill-related component of fitness. Skill-related fitness involves attributes that are necessary for athletic performance, including speed, agility, balance, coordination, and reaction time. Therefore, speed does not belong to the health-related fitness category, making it the correct choice in this context.