What is muscular endurance?

• A. Maximal force in a single effort
• B. Ability to sustain repeated contractions over time
• C. Flexibility
• D. Cardio endurance

Answer: (B)

Muscular endurance is the ability of a muscle or group of muscles to perform repeated contractions over a period of time or to hold a contraction for an extended time without fatiguing quickly. This relies on how long the muscles can keep working before tiredness limits performance, not on how much force they can generate in a single effort.

Think of doing many push-ups, cycling for a long distance, or holding a wall sit. In each case, the same muscles must keep working repeatedly or stay contracted for a while, rather than producing a single, maximal bite of force.

This is different from maximal strength (the greatest force in one effort), flexibility (range of movement around joints), and cardio endurance (the heart and lungs’ ability to supply oxygen during prolonged activity).