What does the term 'muscle hypertrophy' refer to?

Muscle hypertrophy refers specifically to the increase in muscle mass and size through the growth of muscle fibers. This physiological process typically occurs as a result of resistance training or strength training programs, where muscles are subjected to stress and adapt by growing larger to handle future strains. It is a key goal for many individuals seeking to improve their strength, aesthetics, or athletic performance.

Increasing muscle mass not only enhances physical appearance but also contributes to overall strength, improves metabolic rate, and supports various bodily functions. This differentiation from other fitness terms, such as flexibility, endurance, or fatigue, emphasizes the specific focus on muscle architecture and structural development inherent in hypertrophy.