What does muscular hypertrophy refer to?

Muscular hypertrophy specifically refers to the enlargement of muscle fibers as a result of consistent resistance training or weightlifting. When the muscles are subjected to stress, such as lifting weights, the fibers undergo micro-tears, prompting the body to repair and rebuild them. This process leads to an increase in the size of the muscle fibers, thus enhancing the overall size and mass of the muscle.

By focusing on hypertrophy, individuals aim to increase muscle growth, which is a key aspect of strength training and bodybuilding. This definition contrasts sharply with the other options, which address different aspects of muscle function and training. For instance, increasing muscle strength refers to the ability of the muscle to generate force but does not necessarily entail an increase in size. Similarly, decreasing muscle size and improving endurance involve different physiological adaptations and training regimens unrelated to hypertrophy.