What is the term for the ability to sustain muscle contractions over a period of time without fatigue?

The term that describes the ability to sustain muscle contractions over a period of time without fatigue is known as muscular endurance. This concept focuses on how long a muscle or group of muscles can perform a specific task before experiencing fatigue. In various fitness contexts, improving muscular endurance is crucial for activities that require prolonged physical effort, such as distance running, cycling, and many sports.

Muscular strength, on the other hand, refers to the maximum amount of force that a muscle can exert in a single effort, which is different from the concept of sustaining that muscle effort over time. Aerobic capacity is related to the efficiency of the cardiovascular system in delivering oxygen during prolonged physical activity, while cardiovascular endurance encompasses the ability of the heart, lungs, and blood vessels to supply oxygen during sustained physical activity. Although all these terms relate to fitness, muscular endurance specifically targets the muscle's capacity to continue working without tiring.