What is the difference between muscular endurance and muscular strength? muscular strength refers to the amount of force in one effort, while muscular endurance refers to performing repeated movements. muscular strength refers to the ability to move joints, while muscular endurance refers to the efficiency of oxygen delivery to cells. muscular endurance refers to the amount of force in one effort, while muscular strength refers to performing repeated movements. muscular endurance refers to the efficiency of oxygen delivery to cells, while muscular strength refers to the ability to move joints.