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Muscular hypertrophy refers to an increase in muscle mass. This usually manifests as an increase in muscle size and strength.
Typically, muscle hypertrophy occurs as a result of strength training, which is why it is normally associated with weight lifting.
There are two types of muscle hypertrophy: myofibrillar and sarcoplasmic. Some people may adapt their training to target different types of muscle growth. For example, some people will train to prioritize either muscle size or muscle strength.
Each myocyte contains myofibrils that allow the muscles to contract. Myofibrillar hypertrophy refers to when the number of myofibrils increases. This causes muscles to increase in strength and density.
The muscles also contain sarcoplasmic fluid. This fluid is an energy resource that surrounds the myofibrils in the muscles. It contains adenosine triphosphate, glycogen, creatine phosphate, and water. During a workout, more fluid moves to the muscles to provide energy.
Sarcoplasmic hypertrophy refers to the
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