How is muscular endurance defined?

Muscular endurance is defined as the ability of a muscle to contract repeatedly over time without fatigue. This definition highlights the importance of sustained performance, where muscles can perform repetitions of a particular movement over an extended period. For instance, in activities such as cycling, long-distance running, or any exercise involving repeated movements, having strong muscular endurance is crucial for maintaining performance without becoming overly fatigued.

While other options mention related components of fitness, they do not accurately represent muscular endurance. Lifting a maximum weight once refers to strength, while sprinting short distances relates to speed and power. The capacity to handle heavy resistance in one effort is also more closely aligned with strength. Each of these aspects plays a role in overall fitness, but muscular endurance is specifically about sustaining effort over time with repeated muscle contractions.