What aspect of physical health does muscular strength improve?

Muscular strength specifically refers to the maximum amount of force that a muscle or group of muscles can exert in a single effort. This is a key aspect of physical health as it plays a crucial role in allowing individuals to perform daily activities, lift heavy objects, and improve overall functional fitness. Enhancing muscular strength contributes to better performance in various physical tasks, and it is foundational for other fitness components.

While other choices mention elements related to fitness, they do not directly define muscular strength. For instance, the ability to run longer distances relates more to cardiovascular endurance, while performing a higher number of repetitions refers to muscular endurance. Flexibility involves the range of motion in joints and is not influenced directly by muscular strength. Thus, the most accurate reflection of what muscular strength improves is indeed the maximum force exerted by muscles.