Which of the following is NOT a component of health-related fitness?

The correct answer is speed, as it is not classified as a component of health-related fitness. Health-related fitness typically encompasses components that contribute to overall well-being and the ability to perform daily activities without undue fatigue. The primary components of health-related fitness include cardiorespiratory endurance, which reflects the efficiency of the cardiovascular and respiratory systems during physical activity; muscular strength, which pertains to the amount of force a muscle or group of muscles can exert; and body composition, which refers to the proportion of fat and non-fat mass in the body.

In contrast, speed is more associated with skill-related fitness, which includes components aimed at enhancing athletic performance, such as agility, balance, coordination, and power, rather than general health and fitness. Thus, recognizing that speed focuses on performance in specific contexts helps clarify why it is not considered a health-related fitness component.