Muscle hypertrophy

Muscle hypertrophy or muscle building involves a hypertrophy or increase in size of skeletal muscle through a growth in size of its component cells. Two factors contribute to hypertrophy: sarcoplasmic hypertrophy, which focuses more on increased muscle glycogen storage; and myofibrillar hypertrophy, which focuses more on increased myofibril size.^[1] It is the primary focus of bodybuilding-related activities.

^ Baechle TR, Earle RW, eds. (2008). Essentials of strength training and conditioning (3rd ed.). Champaign, IL: Human Kinetics. ISBN 978-0-7360-5803-2.^{[page needed]}

[Essentials_of_Strength_and_Conditioning-1] Baechle TR, Earle RW, eds. (2008). Essentials of strength training and conditioning (3rd ed.). Champaign, IL: Human Kinetics. ISBN 978-0-7360-5803-2.^{[page needed]}

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