What does muscular endurance refer to?

Muscular endurance refers to the ability of a muscle or group of muscles to sustain repeated contractions against a resistance for an extended period of time. This means that when an individual possesses good muscular endurance, they can perform activities or exercises, such as multiple repetitions of lifting a lighter weight or performing bodyweight exercises like push-ups or squats, without getting fatigued quickly.

The focus is on the duration and frequency of the muscle's exertion rather than the maximum amount of force they can generate in a single effort. This is why the first option accurately captures the essence of muscular endurance, as it emphasizes the extended capability of enduring physical exertion over time. The other options are more closely related to aspects like strength, explosive power, or muscle growth, which do not specifically address the concept of endurance.