Fitness
Myofibrillar Hypertrophy
Myofibrillar hypertrophy grows contractile muscle protein with heavier training—dense strength-oriented muscle, not just high-rep pump volume.
Myofibrillar hypertrophy is growth of contractile proteins inside muscle fibers—dense strength-looking muscle built with heavier loads, moderate reps, and progressive tension. It pairs with neural adaptations that raise force output.
Very high-rep pump work targets more sarcoplasmic expansion. Most programs blend both.
Common questions
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What rep range targets myofibrillar hypertrophy?
Roughly three to eight reps on compounds near failure, with progressive load over months. Accessories can use slightly higher reps while main lifts stay heavy.
Related terms
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