What aspect of fitness involves both strength and endurance?

Muscular fitness encompasses both strength and endurance components. Strength refers to the maximum amount of force that a muscle or group of muscles can exert, while muscular endurance indicates how long a muscle can sustain a given level of force without fatigue. Training for muscular fitness typically includes exercises that enhance both qualities, making it essential for performance in various physical activities as well as daily tasks.

Flexibility focuses specifically on the range of motion of joints and muscles and does not specifically address strength or endurance. Cardiovascular fitness primarily relates to the efficiency of the heart and lungs, engaging endurance but not strength. Anaerobic fitness pertains to short bursts of high-intensity activity that rely on energy sources stored in the muscles, emphasizing strength more than endurance over extended periods. Hence, muscular fitness is the most fitting choice as it directly integrates both strength and endurance training elements.