The diameter of a skeletal muscle fiber increases during weight training primarily through:
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Correct answer: Hypertrophy (increased myofibril number)
Adult skeletal muscle fibers generally do not divide. Instead, they grow larger (hypertrophy) by synthesizing more actin and myosin and increasing the number of myofibrils, usually in response to increased mechanical load.
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More Muscle Fibers questions
- Which of the following is true regarding cardiac muscle fibers compared to skeletal muscle fibers?
- Which of the following describes Type I skeletal muscle fibers?
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