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Exercise-Induced Hypertrophy

Meaning

Exercise-Induced Hypertrophy is the physiological process of increasing the size of muscle cells, specifically skeletal muscle fibers, in response to progressive resistance training. This adaptive change results in a measurable increase in muscle mass and strength, representing a positive shift in the body’s anabolic-catabolic balance. This phenomenon is a primary objective in fitness, rehabilitation, and longevity medicine, as muscle mass is a critical determinant of metabolic health and functional capacity. It is a highly regulated process involving mechanical tension, muscle damage, and metabolic stress.